Gelest - Enabling Your Technology
|
|
|
- Sophie Foster
- 5 years ago
- Views:
Transcription
1 Gelest - Enabling Your Technology Cyclic Azasilanes: Click Chemistry for licones Barry Arkles, Youlin Pan, Annalese Maddox Gelest, Inc. Morrisville, PA (US) executiveoffice@gelest.com licon Symposium
2 Click Chemistry Defined "Click Chemistry u A term introduced by Barry Sharpless in 2001 to describe reactions that proceed in: u high yield u wide in scope u do not create byproducts or only byproducts that can be removed without chromatography u simple to perform u can be conducted without solvent or in easily removable or benign solvents.
3 lane Surface Modification at anodimensions bjectives: React with a greater range of - species Anhydrous Environment Rapid Reaction (Spin-n, CVD or ALD) Vapor Phase (preferred) Low Thermal Budget o Byproducts
4 Coupling to a anoparticle simplified calculation for a 20 nm 2 sphere 10 nm! Surface area(4πr 2 ) nm 2 Step and repeat area for 2 = 4x10-2 nm 2 # of silicon atoms on surface= 12x10-2 = 30,000 For ordered 2 only 1/2 available = 15,000
5 Coupling to a anoparticle: simplified calculation for surface hydroxyls Theoretical maximum, -: 15,000 Experimentally only 60% have -: 9,000 ther forms: -- 4 types of -, but only hydrogen bonded react: 3,000 (25-35% for particles >20nm) nly ~10% of surface silicon atoms provide reactive sites
6 lylation Reagents Donor Effectiveness Enthalpy for - bond formation
7 Cyclic Azasilanes R' R'' R R R Azasilacyclopentanes Diazasilacyclooctanes
8 Substrate Reactivity 3 C 3 C Substrate Substrate
9 Cyclic Azasilanes - Previous Synthetic Work 3 C Cl C ( ) 2 Cl C32 + Cl - Aminative ring-closure with narrow utility John Speir, US Pat. 3,146,250, Cl - Driven by formation of pentacoordinate silicon! 3 C W. Ziche, B. Ziemer, P. John, J. Weiss,. Auner, J. rganomet. Chem., 521, 29,
10 Cyclic Azasilanes General Synthetic Method ( 4 ) 2 S 4 ( ) equilibration 3 C 3 C ( ) 3 dimeric and polymerization products B. Arkles et al, lanes and ther Coupling Agents, Vol. 4, 179, 2004!
11 Azasilacyclopentanes yield b.p. Me Me nbu 47% /3mm Me Me tbu 42% /3mm Me Me C 40% /3mm Me Me Me 19% 48-49/3mm 5-7% not isolated Et Et Me Me no cyclic compound observed B. Arkles et al, lanes and ther Coupling Agents, Vol. 4, 179, 2004!
12 Diazasilacyclooctanes Me Me yield b.p. 92% /3mm Me Me SID % m.p SID X-ray structure!
13 Reactivity of Cyclic Azasilanes Model Study C 2 5 C ( ) 3 no reaction C 2 5 C 2 5 C C 2 5 >99% C 2 5 C 2 5 C 2 5
14 ow Quick is the Click? nc %Reflectance Wavenumbers (cm-1) 0.5% cyclic azasilane in Cl 2 treatment of fumed silica
15 Substrate Reactivity of Cyclic Azasilanes - anoparticles CS = cyclic azasilane SIM APDMMS = aminopropyldimethylmethoxysilane MDS = hexamethyldisilazane!
16 Monolayer Stability 3 C 3 C Substrate ngle bond to substrate Substrate
17 Substrate Reactivity of Cyclic Azasilanes Enhancing hydrolytic stability of the monolayer 2a 2 2 C + Substrate Substrate
18 Substrate Reactivity of Cyclic Azasilanes Enhancing hydrolytic stability of the monolayer 2b Substrate Substrate
19 Comparative Deposition of lanes on 200m 2 /g fumed silica n-butyltrimethoxysilane 6.4 wgt% -n-butylaminopropyltrimethoxysilane 22.5 wgt% -n-butyl-aza-dimethoxysilacyclopentane 38.0 wgt%
20 Commercial Cyclic Azasilanes 3 C C 2 5 Me Me SIB C SIM C 2 5 C 2 5 nbu SIT8187.2! C 2 5 C25 3 C Me SIE Me SIA C 2 3 C SIA C SIA SID Me Me SID3543.0
21 Cyclic Azasilanes: Click Chemistry for ydroxyl Groups Cyclic Azasilanes have greater reactivity than conventional alkoxysilanes Cyclic Azasilanes react with substrates without byproduct formation Cyclic Azasilanes provide effective surface modification at nanodimensions
22 lanol Terminated PDMS- Amine Reactivity n + 2 C C C C n 3 3
23 lanol Terminated PDMS C3 C3 C3 C4 9 C2 C2 C2 C3 C3 C3 C3 C3 C3 C3 C3 n C3 C3 C3 C3 C3 C3 + 2 C3 n C4 9 C 3 C3 C3 C3 C4 9 C2 C2 C2 n C3 C3 C3 < 5 minutes, >99% yield
24 lanol Terminated PDMS- Allylamine Functionality n + 2 C C C n
25 lanol Terminated PDMS- Moisture-Cure n + 2 nc 4 9 C 4 9 C 4 9 n C 4 9 C 4 9 n
26 Moisture Initiated Reaction with Epoxides: Chain-extension 2 C C C C C C C n
27 Moisture-Cure Epoxies 2 C C Fast- 2 diffusion limited (time scale: minutes) C C nc 4 9 C 4 9 C 4 9 ( ) 3 C ( ) 3 Slow- hydrolysis/condensation limited (time scale: hours) catalyst accelerated (dibutyltindilaurate) C 4 9 C 4 9 ( ) 3 C ( ) 3
28 Moisture-Cure Isocyanate rmosils C2 5 C C2 5 C2 5 Fast- 2 diffusion limited (time scale: minutes) Me nbu Me 2 C4 9 C2 5 C Slow- hydrolysis/condensation limited (time scale: hours) + 2 C2 5 - C4 9 C C2 5
29 lanes Undergoing Ring-pening Reactions R' R'' R 3 C 3 C S 3 C C 2 5 C 2 5 C 2 5 C 2 5 C 2 5 SIT8567.0! SID SIT8187.2
30 Cyclic Azasilane Applications Click Chemistry anoparticle vapor-phase functionalization Click Chemistry Capping of silanol functional siloxanes Introduction of reactive groups for further reaction including moisture cure Moisture activated reaction and cure of epoxy and isocyanate derived systems.
31 Cyclic Azasilanes: Click Chemistry for licones Gelest - Enabling Your Technology Barry Arkles, Youlin Pan, Annalese Maddox Gelest, Inc. Morrisville, PA licon Symposium
Surface Modification
Enabling Your Technology Micro-Particle Surface Modification Innovating Particle Functionalization 2009 Gelest, Inc. Gelest provides chemistries and deposition technologies for micro-particle modifications
PHASE NEWS. Vol. 1, No. 1
PHASE NEWS Vol. 1, No. 1 Contents: Aromatic Phases A Resurgance Heptacocyl C 27 Branched Silanes New Method Provides Uniform SiO 2 Product Shorts Aromatic Phases A Resurgence There has been a resurgence
High Density Silicon Dioxide Coatings by UV and Thermal Processing
Silicones in Coatings III 28 30 March, 2000 Barcelona, Spain High Density Silicon Dioxide Coatings by UV and Thermal Processing Authors: Dr Barry Arkles 1 Ben Janeiro 1 Donald H Berry 2 Karen A Ezbiansky
POSS for Surface Modification and and Corrosion Prevention
PSS for Surface Modification and and Corrosion Prevention Bill einerth Presented at the Nanostructured Chemicals Workshop September 7 th - 8 th, 2000 18237 Mount Baldy Circle Fountain Valley, CA 92708
ORGANIC - CLUTCH CH ALCOHOLS, ETHERS, EPOXIDES AND THIOLS
!! www.clutchprep.com CONCEPT: ALCOHOL NOMENCLATURE Glycols: Alcohols with two hydroxyls are called ; with three hydroxyls are called Always give most priority to the OH group. EXAMPLE: Provide the correct
Surface-Triggered Tandem Coupling Reactions of Cyclic Azasilanes
DOI: 10.1002/asia.201700137 Communication Cyclic Azasilanes Surface-Triggered Tandem Coupling Reactions of Cyclic Azasilanes Youlin Pan,* Annalese Maddox, Taewoo Min, Ferdinand Gonzaga, Jonathan Goff,*
Epichlorohydrin coupling reactions with wood
Wood Science and Technology 28 (1994) 371-376 Springer-Verlag 1994 Epichlorohydrin coupling reactions with wood Part 1. Reaction with biologicallyactive alcohols R. M. Rowell, G. C. Chen Summary Properties
Enabling Synthetic Organic Transformations Organosilicon Based. and. Offering Selective. and. Versatile Reagents for:
(Me)3 Enabling Synthetic rganic Transformations rganosilicon Based and Metal-rganic Synthetic Reagents licon-based Cross-Coupling Reagents licon-based Blocking Agents Enabling Your Technology (Et) 3 Et
Synthesis of Nitriles a. dehydration of 1 amides using POCl 3 : b. SN2 reaction of cyanide ion on halides:
I. Nitriles Nitriles consist of the CN functional group, and are linear with sp hybridization on C and N. Nitriles are non-basic at nitrogen, since the lone pair exists in an sp orbital (50% s character
Silicone Elastomers with Exceptional Elongation. Barry Arkles*, Jonathan Goff, Santy Sulaiman. Gelest Inc. 11 East Steel Rd. Morrisville, PA 19067
Silicone Elastomers with Exceptional Elongation Barry Arkles*, Jonathan Goff, Santy Sulaiman Gelest Inc. 11 East Steel Rd. Morrisville, PA 19067 Presented at the 188 th Technical Meeting of Rubber Division,
Olefin Metathesis ROMP. L n Ru= ROMP n RCM. dilute
lefin Metathesis MP: ing-opening metathesis polymerization Thermodynamically favored for 3,4, 8, larger ring systems Bridging groups (bicyclic olefins) make ΔG polymerization more favorable as a result
Chapter 12: Carbonyl Compounds II
Chapter 12: Carbonyl Compounds II Learning bjectives: 1. Recognize and assign names to aldehydes and ketones. 2. Write the mechanism for nucleophilic addition and nucleophilic addition-elimination reactions
Hydrophobic Silane Properties Conventional Surface Bonding
Hydrophobic lane Properties Conventional Surface Bonding ( ) 2 N ( ) 2 N C 2 2 2 (C 2 H 5 ) 2 N (C 2 H 5 ) 2 N 2 2 3 ( ) 2 3 CF 3 2 2 N 2 2 CF 3 H SIA0110.0 ACETXYTRIMETHYLSILANE 132.23 103-4 0.891 1.3890
Macromers and Monofunctional Silicones
Macromers and Monofunctional Silicones Macromers are relatively high molecular weight species with a single functional polymerizeable group which, although used as monomers, have high enough molecular
Ethers can be symmetrical or not:
Chapter 14: Ethers, Epoxides, and Sulfides 175 Physical Properties Ethers can be symmetrical or not: linear or cyclic. Ethers are inert and make excellent solvents for organic reactions. Epoxides are very
Wood Chemistry. Cellulose: the Basics. Cellulose: More Basics. PSE 406/Chem E 470. Reducing End Groups. Lecture 5 Cellulose.
: the Basics PSE 406/Chem E 470 Lecture 5 PSE 406: Lecture 5 1 Linear polymer made up of -d glucopyranose units linked with 1 4 glycosidic bonds. Repeating unit glucose (cellobiose) Glucopyranose units
DEHYDRATION OF ALCOHOLS-GAS CHROMATOGRAPHY
DEHYDRATION OF ALCOHOLS-GAS CHROMATOGRAPHY OBJECTIVE In this lab, one will examine the phosphoric acid catalyzed dehydration of 2-methylcyclohexanol. Gas chromatography will be used to monitor the outcome
Introduction & Definitions Catalytic Hydrogenations Dissolving Metal Reduction Reduction by Addition of H- and H+ Oxidation of Alcohols Oxidation of
CEM 241- UNIT 4 xidation/reduction Reactions Redox chemistry 1 utline Introduction & Definitions Catalytic ydrogenations Dissolving Metal Reduction Reduction by Addition of - and + xidation of Alcohols
CARBONYL COMPOUNDS: OXIDATION-REDUCTION REACTION
CARBONYL COMPOUNDS: OXIDATION-REDUCTION REACTION Introduction Several functional groups contain the carbonyl group Carbonyl groups can be converted into alcohols by various reactions Structure of the Carbonyl
The Effects of Organotin Catalysts on Hydrolytic Condensation of
Original Research Paper J. Jpn. Sco. Colour Mater. (SHIKIZAI), 76(10),373-379 (2003) Polymethylsiloxane Oligomer and Moisture Cure of the Coatings Akira IWASAWA*, Ryuichi Ape, Hiroharu SASAKI*, Toshiya
Nanoparticle-Doped Polydimethylsiloxane Elastomer Films
Nanoparticle-Doped Polydimethylsiloxane Elastomer Films DE VIG Jorge Pérez-Juste, Luis M. Liz-Marzán, Isabel Pastoriza-Santos Departamento de Química Física Universidade de Vigo utline DE VIG Some Properties
Synthesis of Polymers Prof. Paula Hammond Lecture 19: Metallocene Chemistry, Intro to New Developments from Brookhart, Others H H
10.569 Synthesis of Polymers Prof. Paula ammond Lecture 19: Metallocene Chemistry, Intro to ew Developments from Brookhart, thers Ionic Polymerization 1. Anionic 2. Cationic Anionic Polymerization - very
GO-CATALYSIS IN FRIEDEL-CRAFTS REACTIONS
GO-CATALYSIS IN FRIEDEL-CRAFTS REACTIONS VI. POLYMERIZATION OF 2-BUTENE BY BORON FLUORIDE - METHANOL'. H. R. ALL COCK^ AND A. M. EASTHAM Division of Applied Chemistry, National Research Council, Ottawa,
Innovative. Technologies. Chemie des Klebens Chemistry of Adhesives. Dr. Jochen Stock, Laboratory Manager CRL Germany: Neuss, November 27 th, 2013
Chemie des Klebens Chemistry of Adhesives Dr. Jochen Stock, Laboratory Manager CRL Germany: Neuss, November 27 th, 2013 Innovative Technologies 1 Overview Chemie des Klebens Chemistry of Adhesives Introduction
Chapter 12 Alcohols from Carbonyl Compounds: Oxidation-Reduction and Organometallic Compounds
Chapter 12 Alcohols from Carbonyl Compounds: Oxidation-Reduction and Organometallic Compounds Introduction Several functional groups contain the carbonyl group Carbonyl groups can be converted into alcohols
A Technical Whitepaper Polymer Technology in the Coating Industry. By Donald J. Keehan Advanced Polymer Coatings Avon, Ohio, USA
A Technical Whitepaper Polymer Technology in the Coating Industry By Donald J. Keehan Advanced Polymer Coatings Avon, Ohio, USA INTRODUCTION Polymer Technology in the Coating Industry To properly understand
Expt 10: Friedel-Crafts Alkylation of p-xylene
Expt 10: Friedel-Crafts Alkylation of p-xylene INTRODUCTION The Friedel-Crafts alkylation reaction is one of the most useful methods for adding alkyl substituents to an aromatic ring. Mechanistically,
Cationic Polymerization
10.569 Synthesis of Polymers Prof. Paula Hammond Lecture 26: Cationic ing pening Polymerization, ther ing pening Polymerization Cationic Polymerization Kk i k p [][ I ZY ][ M ] 2 = p k t Energetics of
Chapter 8: Ethers and Epoxides. Diethyl ether in starting fluid
Chapter 8: Ethers and Epoxides Diethyl ether in starting fluid 8.1 Nomenclature of Ethers Ethers are usually named by giving the name of each alkyl or aryl group, in alphabetical order, followed by the
Topic 9. Aldehydes & Ketones
Chemistry 2213a Fall 2012 Western University Topic 9. Aldehydes & Ketones A. Structure and Nomenclature The carbonyl group is present in aldehydes and ketones and is the most important group in bio-organic
A Glossary of Terms Used in the Adhesives, Coatings and Elastomers (ACE) Sector
A Glossary of Terms Used in the Adhesives, Coatings and Elastomers (ACE) Sector Abrasion resistance The ability of the coating membrane to resist mechanical action such as foot traffic and particles, which
Organometallic Compounds of Magnesium *
OpenStax-CNX module: m32494 1 Organometallic Compounds of Magnesium * Andrew R. Barron This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 While beryllium
Thin-Film Deposition of Silicon Nitrides and Oxides from Trihydridosilanes. Albany, NY 12203, USA
Thin-Film Deposition of Silicon Nitrides and Oxides from Trihydridosilanes B. Arkles a, Y. Pan a and A. E. Kaloyeros b a Gelest Inc., 11 East Steel d. Morrisville, PA 19067, USA b College of Nanoscale
Silicon hydrides as water repellents, a lower VOC alternative to alkoxysilanes and alkoxy functional polysiloxanes
ydrophobe VII 7 th International Conference on Water Repellent Treatment and Protective Surface Technology for Building Materials A.Elena Charola and J. Delgado Rodrigues, Editors LNEC (Laboratório Nacional
Dry media reactions* M. Kidwai. Pure Appl. Chem., Vol. 73, No. 1, pp , IUPAC
Pure Appl. Chem., Vol. 73, No. 1, pp. 147 151, 2001. 2001 IUPAC Dry media reactions* M. Kidwai Department of Chemistry, University of Delhi, Delhi-110007, India Abstract: Dry media reaction under microwaves
Chapter 16. Ethers, Epoxides, and Sulfides. Class Notes. 2. Epoxides: cyclic ethers, 3-membered rings. 1. Symmetrical and unsymmetrical (mixed) ethers
Chapter 16 Ethers, Epoxides, and Sulfides Chapter 16 suggested problems: 21, 25, 26, 31, 32, 33 Class Notes I. Nomenclature of ethers, epoxides, and sulfides A. General B. Ethers 1. Ethers: C-O-C 2. Epoxides:
Organic Chemistry Lecture 2 - Hydrocarbons, Alcohols, Substitutions
ALKANES Water-insoluble, low density C-C single bonds Higher MW -> higher BP, higher MP Branching -> lower BP, higher MP Forms cycloalkanes which can have ring strain Cyclohexane: chair vs. boat configuration
OCR (A) Chemistry A-level. Module 6: Organic Chemistry and Analysis
OCR (A) Chemistry A-level Module 6: Organic Chemistry and Analysis Organic Synthesis Notes by Adam Robertson DEFINITIONS Heterolytic fission: The breaking of a covalent bond when one of the bonded atoms
S N 1 Displacement Reactions
S N 1 Displacement Reactions Tertiary alkyl halides cannot undergo S N 2 reactions because of the severe steric hindrance blocking a backside approach of the nucleophile. They can, however, react via an
Commercial Organofunctional Silanes for. Diagnostics and Separation
01 Commercial rganofunctional lanes for Diagnostics and Separation Ulrike and Dr. orbert Braunagel Managing Directors of abcr Gute Chemie oreword 1 Gute Chemie. Welcome to abcr. What do you think of when
water methanol dimethyl ether Ether can only act as a hydrogen bond acceptor H-bond acceptor O R
Chapter 14: Ethers and Epoxides; Thiols and Sulfides 14.1 Introduction to Ethers An ether group is an oxygen atom that is bonded to two carbons. The ether carbons can be part of alkyl, aryl, or vinyl groups.
Chapter 4. Reactions of alkenes. Addition reactions Carbocations Selectivity of reactions
Chapter 4 Reactions of alkenes Addition reactions Carbocations Selectivity of reactions Prob 47 p192. Give the reagents that would be required (including catalyst). Ch 4 #2 Electrophilic addition Ch 4
Release coatings: Defining Performance
Release coatings: Defining Performance Igor V. Khudyakov, Michael M. Hawkins, Steven A. Barth, Lisa Y. Winckler Solutia Inc., Performance Films, Fieldale, VA, USA Abstract Films with release coatings are
Organolithium Compounds *
OpenStax-CNX module: m32444 1 Organolithium Compounds * Andrew R. Barron This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 One of the major uses of lithium
Chapter 13: Alcohols and Phenols
Chapter 13: Alcohols and Phenols [ Chapter 9 Sections: 9.10; Chapter 13 Sections: 13.1-13.3, 13.9-13.10] 1. Nomenclature of Alcohols simple alcohols C3 C3C2 Eddie Sachs 1927-1964 larger alcohols find the
Advanced Organic Chemistry
D. A. Evans, G. Lalic Question of the day: Chemistry 530A TBS Me 2 C Me toluene, 130 C 70% TBS C 2 Me H H Advanced rganic Chemistry Me Lecture 16 Cycloaddition Reactions Diels _ Alder Reaction Photochemical
Inorganic Material chemistry
Inorganic Material chemistry Silicone -Inorganic Polymer Polymer poly + mer many units Basic unit is called repeat unit (monomer) A polymer is a large molecule (macro molecule) composed of repeating structural
Kinetic Resolutions. Some definitions and examples Resolution: A process leading to the separation of enantiomers, or derivatives thereof.
Material outline: For the Scientist in you: Definitions Theoretical treatment Kinetic esolutions General eferences: Vedejs, ACIEE, 2005, 3974 Jacobsen, Adv. Syn. Cat. 2001, 5 Kagan, Topics in Stereochemistry,
Time Allowed: 60 minutes MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
INTRODUCTION TO ORGANIC AND BIOCHEMISTRY QUIZ 5 Time Allowed: 60 minutes MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the IUPAC name
Organic Chemistry. Radical Reactions
For updated version, please click on http://ocw.ump.edu.my Organic Chemistry Radical Reactions by Dr. Seema Zareen & Dr. Izan Izwan Misnon Faculty Industrial Science & Technology seema@ump.edu.my & iezwan@ump.edu.my
Chapter 12: Unsaturated Hydrocarbons
Chapter 12: Unsaturated Hydrocarbons UNSATURATED HYDROCARBONS contain carbon-carbon multiple bonds. Alkenes C=C double bonds Alkynes triple bonds Aromatics benzene rings 1 2 NAMING ALKENES Step 1: Name
LECTURE #22 Thurs., Nov.15, 2007
Provide a rxn sequence to make these as the major products Answers: 1. i Pr-Cl, AlCl 3 2. conc. fuming? H 2 S 4 3. Cl 2, FeCl 3 or AlCl 3 4. dilute H 2 S 4 note: normally aqueous workup after step 1, but
A. Reaction Mechanisms and Catalysis (1) proximity effect (2) acid-base catalysts (3) electrostatic (4) functional groups (5) structural flexibility
(P&S Ch 5; Fer Ch 2, 9; Palm Ch 10,11; Zub Ch 9) A. Reaction Mechanisms and Catalysis (1) proximity effect (2) acid-base catalysts (3) electrostatic (4) functional groups (5) structural flexibility B.
(a) (i) Use these data to show that benzene is 152 kj mol 1 more stable than the hypothetical compound cyclohexa 1,3,5 triene
Q1.Equations for the hydrogenation of cyclohexene and of benzene, together with the enthalpies of hydrogenation, are shown. (a) (i) Use these data to show that benzene is 152 kj mol 1 more stable than
Biology Slide 1 of 34
Biology 1 of 34 2 4 Chemical Reactions and Enzymes 2 of 34 2 4 Chemical Reactions and Enzymes Chemical Reactions Chemical Reactions A chemical reaction is a process that changes one set of chemicals into
Insertion Reactions. 1) 1,1 insertion in which the metal and the X ligand end up bound to the same (1,1) atom
Insertion Reactions xidative addition and substitution allow us to assemble 1e and 2e ligands on the metal, respectively. With insertion, and its reverse reaction, elimination, we can now combine and transform
SRI DEVI LIQUIDS. (A Unit of Sri Devi Group) Product: CNSL
TECHNICAL DATE SHEET (TDS) Introduction Cashew nut shell liquid (CNSL) is one of the sources of naturally occurring phenols. It is obtained from the shell of a cashew nut. About 30-35% CNSL is present
Synthesis and examination of heterocyclic ferrocene derivatives
UNIVERSITY OF PANNONIA Synthesis and examination of heterocyclic ferrocene derivatives Theses of the PhD dissertation Written by: Csaba Fehér Chemical engineer Supervisor: Dr. Rita Skoda-Földes Professor
Hydrocarbons and their Functional Groups
Hydrocarbons and their Functional Groups Organic chemistry is the study of compounds in which carbon is the principal element. carbon atoms form four bonds long chains, rings, spheres, sheets, and tubes
Benzenes & Aromatic Compounds
Benzenes & Aromatic Compounds 1 Structure of Benzene H H C C C H C 6 H 6 H C C C H H A cyclic conjugate molecule Benzene is a colourless odourless liquid, boiling at 80 o C and melting at 5 o C. It is
Experiment 4: The Borane-Amine Adduct. Text #4 CHEM 531
Experiment 4: The Borane-Amine Adduct Text #4 CEM 531 Reminders Due this Thursday (2/19): Report: Experiment 3 Electrolytic Synthesis of K 2 S 2 8 Prelab: Experiment 4 Borane-Amine Synthesis Due in two
2 4 Chemical Reactions and Enzymes Slide 1 of 34
2 4 Chemical Reactions and Enzymes 1 of 34 Chemical Reactions Chemical Reactions A chemical reaction is a process that changes one set of chemicals into another set of chemicals. Some chemical reactions
Thermal-Mechanical Decoupling by a Thermal Interface Material
Thermal-Mechanical Decoupling by a Thermal Interface Material Haibing Zhang, Ph.D. Research and Development Chemist Andy Cloud Product Development Manager Abstract Thermal-mechanical decoupling by a silicone
Midterm #1 Chem 3A - Fall 2013 Sept. 7, :00 8:30 pm. Name SID
Midterm #1 Chem 3A - Fall 2013 Sept. 7, 2013 7:00 8:30 pm ame SID Including the title page, there should be 5 total questions spread over 7 pages (printed on both sides). The back of the last page may
1. CONCEPTS IN ORGANIC CHEMISTRY 2. SYNTHETIC ORGANIC CHEMISTRY 3. ISOMERISM II 4. HYDROCARBONS II 5. HALOALKANES. Vikasana - CET 2012
CET OBJECTIVE QUESTION ON 1. CONCEPTS IN ORGANIC CHEMISTRY 2. SYNTHETIC ORGANIC CHEMISTRY 3. ISOMERISM II 4. HYDROCARBONS II 5. HALOALKANES 1.The inductive effect a. Implies the atoms ability to cause
Microwave Energy in Accelerating Reaction Rate of Solid-Assisted Solution Phase Synthesis
Microwave Energy in Accelerating Reaction Rate of Solid-Assisted Solution Phase Synthesis Shahnaz Ghassemi, Discovery Chemistry Group1725 Discovery Drive Charlottesville, VA 22911 Introduction Solid-Assisted
Introduction to Macromolecular Chemistry
Introduction to Macromolecular Chemistry aka polymer chemistry Mondays, 8.15-9.45 am except for the following dates: 01.+29.05, 05.+12.06., 03.07. Dr. Christian Merten, Ruhr-Uni Bochum, 2017 www.ruhr-uni-bochum.de/chirality
Alcohols: Contain a hydroxy group( OH) bonded to an sp 2 or sp 3 hybridized
Lecture Notes hem 51B S. King hapter 9 Alcohols, Ethers, and Epoxides I. Introduction Alcohols, ether, and epoxides are 3 functional groups that contain σ-bonds. Alcohols: ontain a hydroxy group( ) bonded
1. Radical Substitution on Alkanes. 2. Radical Substitution with Alkenes. 3. Electrophilic Addition
1. Radical Substitution on Alkanes Only Cl and Br are useful at the laboratory level. Alkane reactivity: tertiary > secondary > primary > methyl Numbers below products give their relative yield. Relative
Physical Properties. Alcohols can be: CH CH 2 OH CH 2 CH 3 C OH CH 3. Secondary alcohol. Primary alcohol. Tertiary alcohol
Chapter 10: Structure and Synthesis of Alcohols 100 Physical Properties Alcohols can be: CH 3 CH 3 CH CH 2 OH * Primary alcohol CH 3 OH CH * CH 2 CH 3 Secondary alcohol CH 3 CH 3 * C OH CH 3 Tertiary alcohol
Ch 18 Ethers and Epoxides
Ch 18 Ethers and Epoxides Ethers (R-O-R ) are compounds with two organic groups attached to an sp 3 oxygen. Epoxides are cyclic ethers where the sp 3 O is a part of a 3-membered ring. Thiols (R-S-H ) and
Chapter 2 Controlling Residence Time
Chapter 2 Controlling Residence Time Abstract For a batch reaction, the conditions within a reactor (the concentrations of materials and products) change with time. In contrast, for a flow reaction, the
(2) After dissolving a solid in a solvent at high temperature, the solution is not filtered.
Name Key 216 W13-Exam No. 1 Page 2 I. (10 points) The goal of recrystallization is to obtain purified material with a maximized recovery. For each of the following cases, indicate as to which of the two
Fisika Polimer Ariadne L Juwono. Sem /2007
Chapter 4. Ionic and coordination (addition) polymerization 4.1. Similarities and contrast on ionic polymerization 4.2. Cationic polymerization 4.3. Anionic polymerization 4.4. Coordination polymerization
CHMA2000 EXPT 7: The Physical and Chemical Properties of Alcohols
CHMA2000 EXPT 7: The Physical and Chemical Properties of Alcohols Objectives: At the end of this experiment you should be able to: 1. Understand the physical and chemical properties of alcohols 2. Understand
ENCAPSULATION OF ALUMINIUM PIGMENTS
U.P.B. Sci. Bull., Series B, Vol. 78, Iss. 4, 2016 ISSN 1454-2331 ENCAPSULATION OF ALUMINIUM PIGMENTS D. DRAGNEA 1, A. SMOCHINĂ 2, C.S. BÎLDEA 3, E. ZAHARIA 4, I. DRAGNEA 5, D. GUDOVAN 6 This contribution
Chapter 9 Aldehydes and Ketones Excluded Sections:
Chapter 9 Aldehydes and Ketones Excluded Sections: 9.14-9.19 Aldehydes and ketones are found in many fragrant odors of many fruits, fine perfumes, hormones etc. some examples are listed below. Aldehydes
Sodium Borohydride Reduction of Benzoin
Sodium Borohydride Reduction of Benzoin Introduction The most common and useful reducing agents for reducing aldehydes, ketones, and other functional groups are metal hydride reagents. The two most common
Lecture Topics: I. Electrophilic Aromatic Substitution (EAS)
Reactions of Aromatic Compounds Reading: Wade chapter 17, sections 17-1- 17-15 Study Problems: 17-44, 17-46, 17-47, 17-48, 17-51, 17-52, 17-53, 17-59, 17-61 Key Concepts and Skills: Predict and propose
Some Reactions of Hydrocarbons Experiment #2
Some Reactions of Hydrocarbons Experiment #2 Objective: To distinguish alkanes, alkenes and aromatic hydrocarbons by their chemical reactions and reactivity. Introduction Hydrocarbons are organic compounds
Stille-type cross coupling reactions with tetraalkynyl stannanes
Stille-type cross coupling reactions with tetraalkynyl stannanes Andrey S. Levashov,* Dmitriy S. Buriy, Valeriy V. Konshin and Alexey A. Andreev (deceased) Kuban State University, 149 Stavropolskaya Str.,
CHEM Lecture 7
CEM 494 Special Topics in Chemistry Illinois at Chicago CEM 494 - Lecture 7 Prof. Duncan Wardrop ctober 22, 2012 CEM 494 Special Topics in Chemistry Illinois at Chicago Preparation of Alkenes Elimination
Alcohols, Ethers, & Epoxides
Alcohols, Ethers, & Epoxides Alcohols Structure and Bonding Enols and Phenols Compounds having a hydroxy group on a sp 2 hybridized carbon enols and phenols undergo different reactions than alcohols. Chapter
Preparation of Hydrophobic Monolithic Silica Aerogels through Surface Modification Using Hexamethyldisilazane in Supercritical CO 2
Preparation of Hydrophobic Monolithic Silica Aerogels through Surface Modification Using Hexamethyldisilazane in Supercritical CO 2 Can Erkey* and Ayse Meric Kartal Department of Chemical and Biological
Processing and Characterization of PMSSQ Based Materials for Nanoporous Low-K Dielectrics
Processing and Characterization of PMSSQ Based Materials for Nanoporous Low-K Dielectrics P. Lazzeri 1, L. Vanzetti 1, M. Bersani 1, M. Anderle 1, J.J. Park 2, Z. Lin 2,, R.M. Briber 2, G.W. Rubloff 2,
Chemistry Instrumental Analysis Lecture 28. Chem 4631
Chemistry 4631 Instrumental Analysis Lecture 28 Two types in general use: -packed (stationary phase) -open tubular or capillary determine selectivity and efficiency of the sample. Column Materials Column
Chapter 4. Results and Discussion. 4.1 Monomer Syntheses
Chapter 4 Results and Discussion 4.1 Monomer Syntheses The syntheses of a family of novel, carbazole based methacrylate, dimethacrylate, and acrylate monomers, and subsequent purifications, were successful.
Experiment 3: Preparation of Lidocaine
Experiment 3: Preparation of Lidocaine This two-step synthesis involves the following conversion: 2,6-dimethylaniline α- chloro-2, 6-dimethylacetanilide Lidocaine. This synthetic scheme is shown in equation
New types of silicone resin open up wider fields of application. By Marco Heuer, Evonik Resource Efficiency GmbH.
50 SILICONE RESINS Source: by-studio - Fotolia.com TAKING THE HEAT New types of silicone resin open up wider fields of application. By Marco Heuer, Evonik Resource Efficiency GmbH. The properties of the
Nuggets of Knowledge for Chapter 12 Alkenes (II) Chem reaction what is added to the C=C what kind of molecule results addition of HX HX only
I. Addition Reactions of Alkenes Introduction Nuggets of Knowledge for Chapter 12 Alkenes (II) Chem 2310 An addition reaction always involves changing a double bond to a single bond and adding a new bond
Hybridization of Nickel Catalysis and Photoredox Catalysis. Literature seminar#1 B4 Hiromu Fuse 2017/02/04(Sat)
Hybridization of Nickel Catalysis and Photoredox Catalysis Literature seminar#1 B4 Hiromu Fuse 2017/02/04(Sat) Introduction Novel cross coupling was reported! Highly selective sp 3 C-H functionalization!
Chem 112A: Final Exam
Chem 112A: Final Exam December 14th, 2011 Please provide all answers in the spaces provided. You are not allowed to use a calculator for this exam, but you may use molecular model kits. nly cyclohexane
CHEM 251 (4 credits): Description
CHEM 251 (4 credits): Intermediate Reactions of Nucleophiles and Electrophiles (Reactivity 2) Description: An understanding of chemical reactivity, initiated in Reactivity 1, is further developed based
Molecular Orbitals for Alkyl Halide Electrophiles. Chemistry 335 Supplemental Slides: Chapter 2
Molecular Orbitals for Alkyl Halide Electrophiles To build molecular orbitals, first recall that the energy of the starting atomic orbitals depends the electronegativity of the element, which you can get
π-alkyne metal complex and vinylidene metal complex in organic synthesis
Literature Seminar 080220 Kenzo YAMATSUGU (D1) π-alkyne metal complex and vinylidene metal complex in organic synthesis 0. Introduction ' ' = π-alkyne metal complex vinylidene metal complex ecently, electrophilic
CuI CuI eage lic R tal ome rgan gbr ommon
Common rganometallic eagents Li Et 2 Li Mg Et 2 Li alkyllithium rignard Mg Mg Li Zn TF ZnCl 2 TF dialkylzinc Zn 2 2 Zn Li CuI TF ganocuprate CuI 2 2 CuI common electrophile pairings ' Cl ' '' ' ' ' ' '
Chapter 7: Alcohols, Phenols and Thiols
Chapter 7: Alcohols, Phenols and Thiols 45 -Alcohols have the general formula R-OH and are characterized by the presence of a hydroxyl group, -OH. -Phenols have a hydroxyl group attached directly to an
Wilkinson s other (ruthenium) catalyst
Wilkinson s other (ruthenium) catalyst Cl 3 ; 2 h 3, reflux 3h h 3 Cl h 3 h Cl 3 Good catalyst especially for 2 1-alkenes 2, base toluene Cl h 3 h 3 h 3 Et 3 Cl h 3 Cl h 3 h 3 R h 3 h 3 Cl h 3 R RC 2 C
Electrophilic Aromatic Substitution: Direction
Electrophilic Aromatic Substitution: Direction or each of the following species, show the most likely site(s) for electrophilic aromatic substitution, and predict whether the molecule reacts with electrophiles
synthetic strategies for the generation of polymer monolayers grafting via immobilized monomers
synthetic strategies for the generation of polymer monolayers I I I I "grafting-to" chemisorption: groups of the polymer are reacted with suitable surface sites grafting via immobilized monomers "grafting-from"