Chapter 4, Problem 10PP

Interpretation Introduction

Interpretation:

The IUPAC names of the given compounds are to be written.

Concept introduction:

In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a systematic method of naming organic chemical compounds as recommended by the International Union of Pure and Applied Chemistry (IUPAC).

The parent chain is the longest continuous chain of carbon atoms.

The parent chain is numbered from that end, which is closest to the substituent.

If the same substituent occurs more than once, the location of each point on which the substituent occurs is given.

If there are two or more different substituents they are listed in alphabetical order using the base name

The name of the alkane is derived from the parent chain with a prefix of the substituent along with their position on the chain.

For naming the cyclic organic compounds, the word “cyclo” is used as prefix.

For alkenes, suffix “ene” is used.

The branched chain alkanes can be named by the following steps:

The lengthiest continuous chain of carbon atoms is to be found for the parent name of the given alkane. For two equal chains, the chain that has more substituents will be selected.

The parent chain is to be numbered in such a way that a substituent gets the minimum possible number. For equal branching from both ends of the chain, the substituent is to be numbered such that their sum is the least.

Each of the given substituents should be numbered according to its position in the parent chain and then it should be listed in the alphabetical order. For two substituents on the same carbon, the number is repeated twice for the two substituents.

For identical substituents, a prefix is used for the number of substituents.