Organic Chemistry (9th Edition)
Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
Question
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Chapter 6, Problem 6.49SP

(a)

Interpretation Introduction

To determine: The mechanism for the racemisation of 2bromobutane with a solution of KBr.

Interpretation: The mechanism for the racemisation of 2bromobutane with a solution of KBr is to be stated.

Concept introduction: The stereoisomers that possess the mirror images of each other which are not superimposable or not identical to each other are termed as enantiomers.

The process of producing the equal mixture of possible enantiomers if any compound undergoes a transformation is termed as racemization. And the resultant mixture is known as racemic mixture.

The characteristic of rotating the plane polarized light by any compound is termed as optical activity of that compound.

(b)

Interpretation Introduction

To determine: The reason corresponding to the fact that the reaction of optically active butan2ol with the solution of KOH does not undergo racemisation like that in part (a).

Interpretation: The reason corresponding to the fact that the reaction of optically active butan2ol with the solution of KOH does not undergo racemisation like that in part (a) is to be stated.

Concept introduction: The stereoisomers that possess the mirror images of each other which are not superimposable or not identical to each other are termed as enantiomers.

The process of producing the equal mixture of possible enantiomers if any compound undergoes a transformation is termed as racemization. And the resultant mixture is known as racemic mixture.

The characteristic of rotating the plane polarized light by any compound is termed as optical activity of that compound.

(c)

Interpretation Introduction

To determine: The mechanism for the racemization of optically active butan2ol in dilute acid.

Interpretation: The mechanism for the racemization of optically active butan2ol in dilute acid is to be stated.

Concept introduction: The stereoisomers that possess the mirror images of each other which are not superimposable or not identical to each other are termed as enantiomers.

The process of producing the equal mixture of possible enantiomers if any compound undergoes a transformation is termed as racemization. And the resultant mixture is known as racemic mixture.

The characteristic of rotating the plane polarized light by any compound is termed as optical activity of that compound.

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Students have asked these similar questions
H 9. (a) Optically active 2-bromobutane undergoes racemization on treatment with a solution of KBr. Give a mechanism for this racemization. (b) In contrast, optically active butan-2-ol does not racemize on treatment with a solution of KOH. Explain why a reaction like that in part (a) does not occur. (c) Optically active butan-2-ol racemizes in dilute acid. Propose a mechanism for this racemization.
Use the Witting reaction to answer the following question.
Alkyl diazonium salts are unstable even at low temperature. They decompose to form carbocations, which go on to form products of substitution, elimination, and (sometimes) rearrangement. Keeping this in mind, draw a stepwise mechanism that forms all of the following products. NANO2 он + HCI, H2O NH2 он

Chapter 6 Solutions

Organic Chemistry (9th Edition)

Ch. 6.7 - Prob. 6.11PCh. 6.7 - Prob. 6.12PCh. 6.8 - Prob. 6.13PCh. 6.9 - Predict the major products of the following...Ch. 6.9 - Prob. 6.15PCh. 6.10A - Prob. 6.16PCh. 6.11A - When diethyl ether (CH3CH2OCH2CH3) is treated with...Ch. 6.11B - Prob. 6.18PCh. 6.11B - For each pair of compounds, state which compound...Ch. 6.12 - Prob. 6.20PCh. 6.12 - Under appropriate conditions...Ch. 6.13 - Propose an SN1 mechanism for the solvolysis of...Ch. 6.13B - Prob. 6.23PCh. 6.13B - 3-Bromocyclohexene is a secondary halide, and...Ch. 6.15 - Prob. 6.25PCh. 6.15 - Prob. 6.26PCh. 6.16 - For each reaction, give the expected substitution...Ch. 6.16 - Prob. 6.28PCh. 6.16 - Prob. 6.29PCh. 6 - Prob. 6.30SPCh. 6 - Draw the structures of the following compounds. a....Ch. 6 - Give systematic (IUPAC) names for the following...Ch. 6 - Prob. 6.33SPCh. 6 - Predict the compound in each pair that will...Ch. 6 - Prob. 6.35SPCh. 6 - Give two syntheses for (CH3)2CHOCH2CH3, and...Ch. 6 - Prob. 6.37SPCh. 6 - Prob. 6.38SPCh. 6 - Chlorocyclohexane reacts with sodium cyanide...Ch. 6 - Give the substitution products expected from...Ch. 6 - Prob. 6.41SPCh. 6 - Prob. 6.42SPCh. 6 - Two of the carbocations in Problem6-42 are prone...Ch. 6 - Prob. 6.44SPCh. 6 - Predict the products of the following SN2...Ch. 6 - Prob. 6.46SPCh. 6 - Strawberry growers have used large quantities of...Ch. 6 - A solution of pure (S)-2-iodobutane ([]=+15.90) in...Ch. 6 - Prob. 6.49SPCh. 6 - Give a mechanism to explain the two products...Ch. 6 - Prob. 6.51SPCh. 6 - Because the SN1 reaction goes through a flat...Ch. 6 - Prob. 6.53SPCh. 6 - Furfuryl chloride can undergo substitution by both...Ch. 6 - Prob. 6.55SPCh. 6 - The following reaction takes place under...Ch. 6 - Propose mechanisms to account for the observed...Ch. 6 - Prob. 6.58SPCh. 6 - Prob. 6.59SP
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