Organic Chemistry As a Second Language: Second Semester Topics
Organic Chemistry As a Second Language: Second Semester Topics
4th Edition
ISBN: 9781119110651
Author: David R. Klein
Publisher: WILEY
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Chapter 1.2, Problem 1.5P
Interpretation Introduction

Interpretation:

A systematic name for the given compound has to be provided.

Organic Chemistry As a Second Language: Second Semester Topics, Chapter 1.2, Problem 1.5P , additional homework tip  1

Concept Introduction:

Nomenclature of aromatic compounds:

  • The parent is benzene ring.  Functional groups attached to it other than hydrogens are called substituents.  The name of substituent must be placed before the name of the compound as a prefix in any substituted hydrocarbon.

    Ex.

Organic Chemistry As a Second Language: Second Semester Topics, Chapter 1.2, Problem 1.5P , additional homework tip  2

  • The numerical prefixes such as di, tri, and tetra must be included in the nomenclature if more than one similar substituents are attached to the benzene ring.

    Ex.

Organic Chemistry As a Second Language: Second Semester Topics, Chapter 1.2, Problem 1.5P , additional homework tip  3

  • If different substituent groups are attached to the benzene ring, the no. one position is determined by the parent.  So the first step is to choose a suitable parent.  Then the locants are assigned in a manner that gives the lower possible number to the next substituent.

    Ex.

Organic Chemistry As a Second Language: Second Semester Topics, Chapter 1.2, Problem 1.5P , additional homework tip  4

  • For disubstituted benzenes, prefixes such as ortho, meta and para should be used.

    Ex.

Organic Chemistry As a Second Language: Second Semester Topics, Chapter 1.2, Problem 1.5P , additional homework tip  5

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