Organic Chemistry
Organic Chemistry
4th Edition
ISBN: 9780073402772
Author: Janice G. Smith
Publisher: MCG
Question
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Chapter 8, Problem 8.36P
Interpretation Introduction

(a)

Interpretation:

To draw the structure of two different alkyl halides to yield the alkene.

Concept introduction:

The most common mechanism for dehydrohalogenation is the E2 mechanism. An E2 reaction exhibits a second-order kinetics, in which the reaction is bimolecular and both the alkyl halide and the base appear in the rate equation. The most straightforward explanation for the second-order kinetics is a concerted reaction: all bonds are broken and formed in a single step. In other words simultaneously all bonds are broken and formed.

The transition state of an E2 reaction consists of four atoms from the alkyl halide-one hydrogen atom, two carbon atoms, and the leaving group (X)-all aligned in the same plane. There are two ways for the C-H and C-x bonds to be coplanar. When the H and X atoms oriented on the same side of the molecule. This geometry is called syn periplanar. While the H and X atoms oriented on opposite sides of the molecule. This geometry is called anti periplanar. The dihedral angle for the C-H and C-X bonds equals 0° for the syn periplanar arrangement and 180° for the anti periplanar arrangement.

Interpretation Introduction

(b)

Interpretation:

To draw the structure of two different alkyl halides to yield the alkene.

Concept introduction:

The most common mechanism for dehydrohalogenation is the E2 mechanism. An E2 reaction exhibits a second-order kinetics, in which the reaction is bimolecular and both the alkyl halide and the base appear in the rate equation. The most straightforward explanation for the second-order kinetics is a concerted reaction: all bonds are broken and formed in a single step. In other words simultaneously all bonds are broken and formed.

The transition state of an E2 reaction consists of four atoms from the alkyl halide-one hydrogen atom, two carbon atoms, and the leaving group (X)-all aligned in the same plane. There are two ways for the C-H and C-x bonds to be coplanar. When the H and X atoms oriented on the same side of the molecule. This geometry is called syn periplanar. While the H and X atoms oriented on opposite sides of the molecule. This geometry is called anti periplanar. The dihedral angle for the C-H and C-X bonds equals 0° for the syn periplanar arrangement and 180° for the anti periplanar arrangement.

Interpretation Introduction

(c)

Interpretation:

To draw the structure of two different alkyl halides to yield the alkene.

Concept introduction:

The most common mechanism for dehydrohalogenation is the E2 mechanism. An E2 reaction exhibits a second-order kinetics, in which the reaction is bimolecular and both the alkyl halide and the base appear in the rate equation. The most straightforward explanation for the second-order kinetics is a concerted reaction: all bonds are broken and formed in a single step. In other words simultaneously all bonds are broken and formed.

The transition state of an E2 reaction consists of four atoms from the alkyl halide-one hydrogen atom, two carbon atoms, and the leaving group (X)-all aligned in the same plane. There are two ways for the C-H and C-x bonds to be coplanar. When the H and X atoms oriented on the same side of the molecule. This geometry is called syn periplanar. While the H and X atoms oriented on opposite sides of the molecule. This geometry is called anti periplanar. The dihedral angle for the C-H and C-X bonds equals 0° for the syn periplanar arrangement and 180° for the anti periplanar arrangement.

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Chapter 8 Solutions

Organic Chemistry

Ch. 8 - Prob. 8.11PCh. 8 - What alkenes are formed from each alkyl halide by...Ch. 8 - Prob. 8.13PCh. 8 - Prob. 8.14PCh. 8 - Problem 8.15 How does each of the following...Ch. 8 - Prob. 8.16PCh. 8 - Prob. 8.17PCh. 8 - Prob. 8.18PCh. 8 - Prob. 8.19PCh. 8 - Problem 8.19 Explain why...Ch. 8 - Prob. 8.21PCh. 8 - Draw the alkynes formed when each dihalide is...Ch. 8 - Prob. 8.23PCh. 8 - Draw a stepwise mechanism for the following...Ch. 8 - 8.24 Rank the alkenes shown in the ball-and-stick...Ch. 8 - Prob. 8.26PCh. 8 - 8.26 What is the major E2 elimination product...Ch. 8 - Prob. 8.28PCh. 8 - Prob. 8.29PCh. 8 - Prob. 8.30PCh. 8 - Prob. 8.31PCh. 8 - PGF2 is a prostaglandin, a group of compounds that...Ch. 8 - Prob. 8.33PCh. 8 - Prob. 8.34PCh. 8 - Prob. 8.35PCh. 8 - Prob. 8.36PCh. 8 - Prob. 8.37PCh. 8 - Prob. 8.38PCh. 8 - Prob. 8.39PCh. 8 - Prob. 8.40PCh. 8 - What alkene is the major product formed from each...Ch. 8 - Prob. 8.42PCh. 8 - Prob. 8.43PCh. 8 - Prob. 8.44PCh. 8 - 8.42 In the dehydrohalogenation of...Ch. 8 - Prob. 8.46PCh. 8 - Prob. 8.47PCh. 8 - Prob. 8.48PCh. 8 - Prob. 8.49PCh. 8 - Prob. 8.50PCh. 8 - Draw the products of each reaction. a.c. b.d.Ch. 8 - Draw the structure of a dihalide that could be...Ch. 8 - Under certain reaction conditions, 2,...Ch. 8 - For which reaction mechanisms, SN1, SN2, E1 or...Ch. 8 - Draw the organic products formed in each reaction....Ch. 8 - Prob. 8.56PCh. 8 - Prob. 8.57PCh. 8 - Draw all products, including stereoisomers, in...Ch. 8 - Draw all of the substitution and elimination...Ch. 8 - Prob. 8.60PCh. 8 - 8.59 Draw a stepwise, detailed mechanism for each...Ch. 8 - Draw the major product formed when...Ch. 8 - Draw a stepwise, detailed mechanism for the...Ch. 8 - Explain why the reaction of with gives ...Ch. 8 - Draw a stepwise detailed mechanism that...Ch. 8 - Prob. 8.66PCh. 8 - 8.65 Explain the selectivity observed in the...Ch. 8 - Prob. 8.68PCh. 8 - Although dehydrohalogenation occurs with anti...Ch. 8 - 8.68 (a) Draw all products formed by treatment of...
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