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CHM2210 Organic Chemistry 1
CHM2210 Organic Chemistry 1

... 3.  naming stereoisomers written as perspective drawings, Newman projections or Fischer projections 4.  drawing the structure of stereoisomers as perspective drawings, Newman projections or Fischer projections when its IUPAC name is provided Competency 4: The student will demonstrate knowledge of th ...
Recent developments in the applications of palladium complexes
Recent developments in the applications of palladium complexes

... i) Hydrophilic ligands and aqueous Pd-catalyzed reactions. The use of water as solvent has attracted great interest for economical and ecological reasons and so, water-soluble homogenous catalysts are highly desirable. This strategy requires that the metal remains bound to the water-soluble ligand i ...
Endothermic reactions
Endothermic reactions

Chapter 20 Amines-part 2
Chapter 20 Amines-part 2

... è Primary and secondary amines undergo N-oxidation, but useful products are not obtained because of side-reactions è Tertiary amines undergo clean N-oxidation ...
Ionic Liquids Beyond Simple Solvents: Glimpses at the State of the
Ionic Liquids Beyond Simple Solvents: Glimpses at the State of the

Studies on some essential amino acids: Synthesis of methyl esters
Studies on some essential amino acids: Synthesis of methyl esters

2.9 database - DrBravoChemistry
2.9 database - DrBravoChemistry

... Addition reactions to alkenes can result in the formation of isomeric compounds. Choose an alkene with molecular formula C4H8 which reacts with HBr to form two structural isomers. Give the structures of these two isomers and name the type of structural isomerism shown. Outline a mechanism for the fo ...
Can Naturalistic Evolution Explain the Origin of Life on Earth
Can Naturalistic Evolution Explain the Origin of Life on Earth

A Straightforward Route to Enantiopure Pyrrolizidines and
A Straightforward Route to Enantiopure Pyrrolizidines and

... Nucleophilic substitution reactions at sp3-carbon centers are among the most important transformations in organic chemistry. The nucleofugality of leaving groups used in organic synthesis, measured by the rates of solvolysis, covers a range of at least fourteen orders of magnitude [1,2]. Despite thi ...
Diversity-oriented synthesis - David Spring
Diversity-oriented synthesis - David Spring

... space analysis is used. Each molecule, as a function of its associated chemical descriptors,21–24 resides at a discrete point in chemical space.25 Natural products and currently available compound libraries occupy only a small proportion of bioactive chemical space.8,25 Therefore, there may be value ...
Chapter 10: Alkyl Halides
Chapter 10: Alkyl Halides

... Alkyl Halides (RX)—compounds with a halogen bonded to a saturated carbon (sp3 hybridized carbon). ...
Organic Compounds Containing C, H and O
Organic Compounds Containing C, H and O

... 1. Arrange the following in the increasing order of their acid strength. Benzoic acid, 4-nitrobenzoic acid, 3, 4-dinitro benzoic acid, 4-methoxy benzoic acid. Ans. Increasing order of acidic strength is: 4-methoxy benzoic acid < benzoic acid < 4-nitrobenzoic acid < 3, 4-dinitrobenzoic acid. reason: ...
13. Condensed azines. Quinoline. Isoquinoline. Acridine. Diazines
13. Condensed azines. Quinoline. Isoquinoline. Acridine. Diazines

... composed of a benzene ring fused to a pyridine ring. In a broader sense, the term isoquinoline is used to make reference to isoquinoline derivatives. 1-Benzylisoquinoline is the structural backbone in naturally occurring alkaloids including papaverine and morphine. The isoquinoline ring in these nat ...
Hydrogenation,  Transfer  Hydrogenat- ion and Hydrogen Transfer Reactions
Hydrogenation, Transfer Hydrogenat- ion and Hydrogen Transfer Reactions

... academic research toward chiral molecules has led to the development of efficient, economically and environmentally friendly methods to generate optically pure chiral compounds. There are two general methods to obtain enantiomerically pure or enriched compounds: resolution and asymmetric synthesis. ...
Diels-Alder Reaction
Diels-Alder Reaction

... The Diels-Alder reaction is probably the most familiar example of a reaction type known as a cycloaddition reaction, in which the conjugated p-systems of two reactants join to generate a new ring. The reactants in the Diels-Alder reaction are a 1,3-diene and an alkene called the dienophile. The carb ...
CaCl2.2H2O assisted oxidation of alcohols with (NH4)2Cr2O7
CaCl2.2H2O assisted oxidation of alcohols with (NH4)2Cr2O7

... chlorochromate8,9, ferric dichromate10, polyvinylpyridine-supported ferric dichromate11 and hypervalent iodines12-15 are examples . Although these methods are useful in organic synthesis, each of them suffers from one or more of the following disadvantages; lack of selectivity, long reaction time, s ...
Class Notes
Class Notes

... are put in front of the chemical formulas to make the number and types of atoms in the reactants equal to the number and types of atoms in the products. You can never change the subscripts in the compound’s formula; you can only change the coefficient. Also, the coefficient affects the entire compou ...
rev3
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... 11. Know how to hydrolyze an amide using either an acid or a base. Know what products you will get in each case. ...
(C3H7)3NH[CrO3X],(X=F, Cl), Reagents for Oxidation of
(C3H7)3NH[CrO3X],(X=F, Cl), Reagents for Oxidation of

The Grignard Reagent
The Grignard Reagent

... • It is very important that the reaction apparatus, reagents, and solvents must all be kept dry. You will be using glassware from your organic lab kits for this experiment. It is a good idea to dry your glassware in the oven before starting the reaction. Also make sure to keep the reagent bottles ca ...
Organic_2_7ed_07th_module_carboxylic_acids 370KB May 03
Organic_2_7ed_07th_module_carboxylic_acids 370KB May 03

Lecture 2
Lecture 2

... •Harder nucleophiles like alkoxide ion, R-O–, attack the acyl (carbonyl) carbon. •Softer nucleophiles like the cyanide ion, NC–, and the thioanion, R-S–, attack the "beta" alkyl carbon ...
chemical reactions
chemical reactions

... a. Precipitation Reactions In this type of reaction, two compounds which are water soluble react to form two new compounds, one of which is a precipitate (i.e. insoluble in water). The precipitate is often indicated by an arrow pointing downward, ↓, written next to its formula. ...
Chemical Reactions
Chemical Reactions

... of a decomposition reaction, but when there are only 2 components to a compound, the simpler parts formed in the decomposition are apparent. ...
A Straightforward Route to Enantiopure Pyrrolizidines and
A Straightforward Route to Enantiopure Pyrrolizidines and

... homogeneous catalysts for the production of oxygenates [26-33], including methanol, ethanol, and especially ethylene glycol. The principal shortcoming of all homogeneous CO hydrogenation reactions is their low catalytic activity, which results in the need to use high catalyst loadings and drastic re ...
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Enantioselective synthesis



Enantioselective synthesis, also called chiral synthesis or asymmetric synthesis, is defined by IUPAC as: a chemical reaction (or reaction sequence) in which one or more new elements of chirality are formed in a substrate molecule and which produces the stereoisomeric (enantiomeric or diastereoisomeric) products in unequal amounts.Put more simply: it is the synthesis of a compound by a method that favors the formation of a specific enantiomer or diastereomer.Enantioselective synthesis is a key process in modern chemistry and is particularly important in the field of pharmaceuticals, as the different enantiomers or diastereomers of a molecule often have different biological activity.
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