Organic Chemistry: Principles and Mechanisms (Second Edition)
Organic Chemistry: Principles and Mechanisms (Second Edition)
2nd Edition
ISBN: 9780393663556
Author: Joel Karty
Publisher: W. W. Norton & Company
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Chapter B, Problem B.31P
Interpretation Introduction

(a)

Interpretation:

The structure for 2-methyl-1, 3, 5-hexatriene is to be drawn.

Concept introduction:

For a molecule that has more than one double bond, the IUPAC name indicates the number of double bonds present as well as their locations. To draw the structure from the given name, first, it is important to identify the root. The longest carbon chain or the largest carbon ring containing all the C=C groups is the root. The prefixes used in the IUPAC name such as di, tri indicate the number of double bonds in the root. The locator numbers added in the IUPAC name indicate the successive C=C groups as they are encountered in the root. Immediately before the ‘ene’ suffix, a letter ‘a’ is added followed by the above set of locator numbers. The substituents attached to the root are named in alphabetical order.

Interpretation Introduction

(b)

Interpretation:

The structure for 1, 6-dimethoxyhexa-1, 5-diene is to be drawn.

Concept introduction:

For a molecule that has more than one double bond, the IUPAC name indicates the number of double bonds present as well as their locations. To draw the structure from the given name, first, it is important to identify the root. The longest carbon chain or the largest carbon ring containing all the C=C groups is the root. The prefixes used in the IUPAC name such as di, tri indicate the number of double bonds in the root. The locator numbers added in the IUPAC name indicate the successive C=C groups as they are encountered in the root. Immediately before the ‘ene’ suffix, a letter ‘a’ is added followed by the above set of locator numbers. The substituents attached to the root are named in alphabetical order.

Interpretation Introduction

(b)

Interpretation:

The structures for penta-1, 4-diene and cyclopenta-1, 3-diene are to be drawn.

Concept introduction:

For a molecule that has more than one double bond, the IUPAC name indicates the number of double bonds present as well as their locations. To draw the structure from the given name, first, it is important to identify the root. The longest carbon chain or the largest carbon ring containing all the C=C groups is the root. The prefixes used in the IUPAC name such as di, tri indicates the number of double bonds in the root. The locator numbers added in the IUPAC name indicate the successive C=C groups as they are encountered in the root. Immediately before the ‘ene’ suffix, a letter ‘a’ is added followed by the above set of locator numbers. The substituents attached to the root are named in alphabetical order.

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Students have asked these similar questions
Draw the structures for (a) 2-methyl-1,3,5-hexatriene and (b) 1,6-dimethoxyhexa-1,5-diene.
Draw the skeletal structures of the following molecules.(a) (4E)-2,4-dimethyl-1,4-hexadiene (b) cis-3,3-dimethyl-4-propyl-1,5-octadiene (c) trans-2,2,5,5-tetramethyl-3-hexene
Draw structures for the following haloalkanes. (a) 1,2,3-tribromohexane; (b) 2,2,3,3,4-pentachlorohexane;(c) 1,2-dichloro-4-nitrohexane; (d) 1,2-dichloro-3-methoxycyclopentane
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