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.33P
Interpretation Introduction

(a)

Interpretation:

The IUPAC name for the given compound is to be determined.

Concept introduction:

For a molecule that has both C=C and CC groups, the IUPAC name indicates both the groups, and the molecule is called enyne. The root name is established as the longest carbon chain or largest carbon ring that contains both groups and change the suffix to enyne. The numbering system must be chosen so as to give the minimum locator number for each successive C=C and CC group. The C=C and CC groups are given equal priority unless there is a tie between two numbering systems. If there is a tie, the tie is broken by giving priority to the C=C group. A locator number of C=C groups is added immediately before en, and a locator number of CC groups is added immediately before yne. Immediately before the ene or yne suffix, add a letter ‘a’ followed by the above set of locator numbers, and then add a prefix di, tri etc. to specify the number of double or triple bonds. The substituents attached to the root are named in the alphabetical order.

Interpretation Introduction

(b)

Interpretation:

The IUPAC name for the given compound is to be determined.

Concept introduction:

For a molecule that has both C=C and CC groups, the IUPAC name indicates both the groups, and the molecule is called enyne. The root name is established as the longest carbon chain or largest carbon ring that contains both groups and change the suffix to enyne. The numbering system must be chosen so as to give the minimum locator number for each successive C=C and CC group. The C=C and CC groups are given equal priority unless there is a tie between two numbering systems. If there is a tie, the tie is broken by giving priority to the C=C group. A locator number of C=C groups is added immediately before en, and a locator number of CC groups is added immediately before yne. Immediately before the ene or yne suffix, add a letter ‘a’ followed by the above set of locator numbers, and then add a prefix di, tri etc. to specify the number of double or triple bonds. The substituents attached to the root are named in the alphabetical order.

Interpretation Introduction

(c)

Interpretation:

The IUPAC name for the given compound is to be determined.

Concept introduction:

For a molecule that has both C=C and CC groups, the IUPAC name indicates both the groups, and the molecule is called enyne. The root name is established as the longest carbon chain or largest carbon ring that contains both groups and change the suffix to enyne. The numbering system must be chosen so as to give the minimum locator number for each successive C=C and CC group. The C=C and CC groups are given equal priority unless there is a tie between two numbering systems. If there is a tie, the tie is broken by giving priority to the C=C group. A locator number of C=C groups is added immediately before en, and a locator number of CC groups is added immediately before yne. Immediately before the ene or yne suffix, add a letter ‘a’ followed by the above set of locator numbers, and then add a prefix di, tri etc. to specify the number of double or triple bonds. The substituents attached to the root are named in the alphabetical order.

Interpretation Introduction

(d)

Interpretation:

The IUPAC name for the given compound is to be determined.

Concept introduction:

For a molecule that has both C=C and CC groups, the IUPAC name indicates both the groups, and the molecule is called enyne. The root name is established as the longest carbon chain or largest carbon ring that contains both groups and change the suffix to enyne. The numbering system must be chosen so as to give the minimum locator number for each successive C=C and CC group. The C=C and CC groups are given equal priority unless there is a tie between two numbering systems. If there is a tie, the tie is broken by giving priority to the C=C group. A locator number of C=C groups is added immediately before en, and a locator number of CC groups is added immediately before yne. Immediately before the ene or yne suffix, add a letter ‘a’ followed by the above set of locator numbers, and then add a prefix di, tri etc. to specify the number of double or triple bonds. The substituents attached to the root are named in the alphabetical order.

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