ORGANIC CHEMISTRY
ORGANIC CHEMISTRY
5th Edition
ISBN: 9781259977596
Author: SMITH
Publisher: MCG
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Chapter 16, Problem 16.58P
Interpretation Introduction

(a)

Interpretation: The triene that has largest heat of hydrogenation is to be predicted.

Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.

The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.

Interpretation Introduction

(b)

Interpretation: The triene that has smallest heat of hydrogenation is to be predicted.

Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.

The stability of conjugated diene is more than isolated diene. Due to which the heat of hydrogenation is smaller for conjugated diene, whereas heat of hydrogenation for isolated diene is larger.

Interpretation Introduction

(c)

Interpretation: The triene that absorbs the longest wavelength of UV light is to be predicted.

Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.

The energy difference between the ground and excited state decreases when number of conjugated bonds increases. Due to this absorption shifts to the longer wavelengths.

Interpretation Introduction

(d)

Interpretation: The triene that is most reactive in the Diels-Alder reaction is to be predicted.

Concept introduction: Conjugated diene consists of two double bonds that are separated by a single bond, whereas isolated diene also consists of two double bond but they are separated by two or more carbon atoms.

The stability of conjugated diene is more than isolated diene.

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Chapter 16 Solutions

ORGANIC CHEMISTRY

Ch. 16 - Problem 16.11 Neuroprotectin D1 (NPD1) is...Ch. 16 - Problem 16.12 Using hybridization, predict how the...Ch. 16 - Problem 16.13 Use resonance theory to explain why...Ch. 16 - Prob. 16.14PCh. 16 - Prob. 16.15PCh. 16 - Problem 16.16 Draw the products formed when each...Ch. 16 - Problem 16.17 Draw a stepwise mechanism for the...Ch. 16 - Prob. 16.18PCh. 16 - Problem 16.19 Draw the product formed when each...Ch. 16 - Prob. 16.20PCh. 16 - Prob. 16.21PCh. 16 - Problem 16.22 Rank the following dienophiles in...Ch. 16 - Prob. 16.23PCh. 16 - Prob. 16.24PCh. 16 - Problem 16.25 What diene and dienophile are needed...Ch. 16 - Prob. 16.26PCh. 16 - Problem 16.27 Which compound in each pair absorbs...Ch. 16 - Prob. 16.28PCh. 16 - 16.29 Name each diene and state whether the...Ch. 16 - Prob. 16.30PCh. 16 - 16.31 Which of the following systems are...Ch. 16 - 16.32 Draw all reasonable resonance structures for...Ch. 16 - Prob. 16.33PCh. 16 - Prob. 16.34PCh. 16 - 16.35 Explain why the cyclopentadienide anion A...Ch. 16 - Prob. 16.36PCh. 16 - 16.37 Draw the structure of each compound. a. in...Ch. 16 - Prob. 16.38PCh. 16 - 16.39 Label each pair of compounds as...Ch. 16 - Prob. 16.40PCh. 16 - 16.41 Draw the products formed when each compound...Ch. 16 - Prob. 16.42PCh. 16 - 16.43 Treatment of alkenes A and B with gives the...Ch. 16 - 16.44 Draw a stepwise mechanism for the following...Ch. 16 - Prob. 16.45PCh. 16 - 16.46 Explain, with reference to the mechanism,...Ch. 16 - Prob. 16.47PCh. 16 - Prob. 16.48PCh. 16 - Prob. 16.49PCh. 16 - Prob. 16.50PCh. 16 - Prob. 16.51PCh. 16 - Prob. 16.52PCh. 16 - 16.53 Diels–Alder reaction of a monosubstituted...Ch. 16 - Prob. 16.54PCh. 16 - 16.55 Devise a stepwise synthesis of each compound...Ch. 16 - Prob. 16.56PCh. 16 - 16.57 A transannular Diels–Alder reaction is an...Ch. 16 - Prob. 16.58PCh. 16 - Draw a stepwise mechanism for the following...Ch. 16 - Prob. 16.60PCh. 16 - Prob. 16.61PCh. 16 - Prob. 16.62PCh. 16 - Prob. 16.63PCh. 16 - Prob. 16.64PCh. 16 - 16.65 The treatment of isoprene with one...Ch. 16 - 16.66 The treatment of with forms B (molecular...Ch. 16 - Prob. 16.67PCh. 16 - Prob. 16.68PCh. 16 - Prob. 16.69PCh. 16 - Prob. 16.70PCh. 16 - Prob. 16.71PCh. 16 - Prob. 16.72PCh. 16 - Prob. 16.73PCh. 16 - Prob. 16.74PCh. 16 - Prob. 16.75P
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