http://www.twitter.com/chem442bausch - SIU
... forms? (a) aldehydes; (b) carboxylic acids; (c) cis 1,2-diols; (d) trans 1,2 diols (p 629) NaBH4 and LiAlH4 are reagents often used in… (a) preparation of alcohols via oxidation of C=O bonds; (b) preparation of alcohols via reduction of C=O bonds; (c) preparation of alkanes via reduction of C=C bond ...
... forms? (a) aldehydes; (b) carboxylic acids; (c) cis 1,2-diols; (d) trans 1,2 diols (p 629) NaBH4 and LiAlH4 are reagents often used in… (a) preparation of alcohols via oxidation of C=O bonds; (b) preparation of alcohols via reduction of C=O bonds; (c) preparation of alkanes via reduction of C=C bond ...
Diels-Alder Reaction
... both end up on the same face of the product If substituents on the diene are E and Z, then they end up on opposite faces of the product Cyclic dienes can give stereoisomeric products depending on whether the dienophile lies under or away from the diene in the transition state. The endo product is us ...
... both end up on the same face of the product If substituents on the diene are E and Z, then they end up on opposite faces of the product Cyclic dienes can give stereoisomeric products depending on whether the dienophile lies under or away from the diene in the transition state. The endo product is us ...
Bifunctional Asymmetric Catalysis: Cooperative Lewis Acid/Base
... reagent (B, Scheme 1, before or after activation by the Lewis base) and so on. The key, therefore, is to fine-tune the reaction conditions and catalysts, so that only the desired reaction occurs. For example, the use of a “hard” Lewis acid and a “soft” Lewis base (using Pearson’s terminology) may al ...
... reagent (B, Scheme 1, before or after activation by the Lewis base) and so on. The key, therefore, is to fine-tune the reaction conditions and catalysts, so that only the desired reaction occurs. For example, the use of a “hard” Lewis acid and a “soft” Lewis base (using Pearson’s terminology) may al ...
Chapter 11 Chemical Reactions
... For some, we will be able to: c) predict whether or not they will happen at all. ...
... For some, we will be able to: c) predict whether or not they will happen at all. ...
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... Aldehyde: A carbonyl group that is singly-bound to one hydrogen atom and one carbon atom. Notice that if, instead of the carbon atom, you have oxygen or nitrogen, you do not have an aldehyde but rather an acid/ester or an amide, respectively. ...
... Aldehyde: A carbonyl group that is singly-bound to one hydrogen atom and one carbon atom. Notice that if, instead of the carbon atom, you have oxygen or nitrogen, you do not have an aldehyde but rather an acid/ester or an amide, respectively. ...
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... 16. Which elements make up the carbonyl group? Carbon and oxygen make up a carbonyl group. 17. How are ketones and aldehydes related to each other? How are they different from each other? Both contain carbonyl groups. Ketones have the carbonyl carbon bonded to two adjacent carbon atoms, but aldehyd ...
... 16. Which elements make up the carbonyl group? Carbon and oxygen make up a carbonyl group. 17. How are ketones and aldehydes related to each other? How are they different from each other? Both contain carbonyl groups. Ketones have the carbonyl carbon bonded to two adjacent carbon atoms, but aldehyd ...
Carboxylic Acid Derivatives
... groups: R- and H- are poor leaving groups.] A generalized reaction mechanism under basic conditions, BAC2 (basic, acyl, bimolecular) looks like this, where Y is a leaving group – one of the boxed groups above: ...
... groups: R- and H- are poor leaving groups.] A generalized reaction mechanism under basic conditions, BAC2 (basic, acyl, bimolecular) looks like this, where Y is a leaving group – one of the boxed groups above: ...
chap 4 org chem
... Will readily bond with itself (C) with – or = bonds (single, double or even triple) Also bonds with H – O = N, P, & S Forms long chains or backbones of organic molecules Carbon will always have four lines connecting to other atoms. ...
... Will readily bond with itself (C) with – or = bonds (single, double or even triple) Also bonds with H – O = N, P, & S Forms long chains or backbones of organic molecules Carbon will always have four lines connecting to other atoms. ...
CHEMICAL REACTIONS
... © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. ...
... © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. ...
Alkanes CH4 + Cl2 → CH3Cl + HCl CH3CH3 + Cl2 → CH3CH2Cl +
... Definition: A substitution reaction is one in which an atom or group of atoms in a molecule is replaced by another atom or group of atoms. Definition: A nucleophile is an electron rich species that is attracted to an electron deficient region of a molecule and can donate a pair of electrons to form ...
... Definition: A substitution reaction is one in which an atom or group of atoms in a molecule is replaced by another atom or group of atoms. Definition: A nucleophile is an electron rich species that is attracted to an electron deficient region of a molecule and can donate a pair of electrons to form ...
answer
... compound (Y), whose structure is shown on the right. Explain the formation of this product. ...
... compound (Y), whose structure is shown on the right. Explain the formation of this product. ...
GRADE 12A: Chemistry 5
... In a teacher-led session, teach the mechanism for electrophilic addition in alkenes. Provide a generic model of the reaction. Ask students to work through a number of reactions they researched in Grade 11 and draw out the full mechanism for these reactions. Take great care to reinforce the conventio ...
... In a teacher-led session, teach the mechanism for electrophilic addition in alkenes. Provide a generic model of the reaction. Ask students to work through a number of reactions they researched in Grade 11 and draw out the full mechanism for these reactions. Take great care to reinforce the conventio ...
Welcome to 3FF3! Bio
... a stronger C-O σ bond ΔH is favored b) There is little ring strain in 5- or 6- membered rings c) ΔS: there is some loss of rotational entropy in making a ring, but less than in an intermolecular reaction:1 in, 1 out. O ...
... a stronger C-O σ bond ΔH is favored b) There is little ring strain in 5- or 6- membered rings c) ΔS: there is some loss of rotational entropy in making a ring, but less than in an intermolecular reaction:1 in, 1 out. O ...
Ch 26 C-C bond formation
... Organoboranes in Suzuki Reaction • Two types of organoboranes can be used in the Suzuki reaction: vinylboranes and arylboranes. • Vinylboranes, which have a boron atom bonded to a carbon– carbon double bond, are prepared by hydroboration using catecholborane, a commercially available reagent. • Hyd ...
... Organoboranes in Suzuki Reaction • Two types of organoboranes can be used in the Suzuki reaction: vinylboranes and arylboranes. • Vinylboranes, which have a boron atom bonded to a carbon– carbon double bond, are prepared by hydroboration using catecholborane, a commercially available reagent. • Hyd ...
The Nature of Chemical Reactions
... How many nitrate molecules are in the product side? The reactant side? ...
... How many nitrate molecules are in the product side? The reactant side? ...
Topic 16 Assessed Homework - A
... Some students were asked to suggest methods to distinguish between isomers Q and R. One student suggested testing the optical activity of the products formed when Q and R were reacted separately with HCN. By considering the optical activity of these products formed from Q and R, explain why this met ...
... Some students were asked to suggest methods to distinguish between isomers Q and R. One student suggested testing the optical activity of the products formed when Q and R were reacted separately with HCN. By considering the optical activity of these products formed from Q and R, explain why this met ...
Asymmetric induction
Asymmetric induction (also enantioinduction) in stereochemistry describes the preferential formation in a chemical reaction of one enantiomer or diastereoisomer over the other as a result of the influence of a chiral feature present in the substrate, reagent, catalyst or environment. Asymmetric induction is a key element in asymmetric synthesis.Asymmetric induction was introduced by Hermann Emil Fischer based on his work on carbohydrates. Several types of induction exist.Internal asymmetric induction makes use of a chiral center bound to the reactive center through a covalent bond and remains so during the reaction. The starting material is often derived from chiral pool synthesis. In relayed asymmetric induction the chiral information is introduced in a separate step and removed again in a separate chemical reaction. Special synthons are called chiral auxiliaries. In external asymmetric induction chiral information is introduced in the transition state through a catalyst of chiral ligand. This method of asymmetric synthesis is economically most desirable.