Chapter E, Problem E.30P

Interpretation Introduction

(a)

Interpretation:

For the given molecule, the complete IUPAC name, is to be written.

Concept introduction:

To write the IUPAC name, first, it is important to determine the highest-priority functional group present that requires a suffix referring to Table E-1. For the molecules having two or more highest-priority functional groups, the rules are slightly different. In the IUPAC name of such molecules, the final ‘e’ of ‘ane’, ‘ene’, or ‘yne’ is not removed in the suffix. Prefixes such as ‘di’, ‘tri, etc are written immediately before the suffix to specify the number of highest-priority functional groups. Add a locator number for each of the highest-priority functional groups immediately before the prefixes.

The main chain or ring containing the highest-priority functional group is to be determined. The next step is to number the main chain or ring such that carbon atoms involving the highest-priority functional group receive the lowest possible numbers. The locator number for the highest-priority functional group is written immediately before the suffix unless needed. All other functional groups in the molecule are treated as substituents and appear in the name as a prefix. Prefixes like ‘di’, ‘tri’, ‘tetra’… etc. are used to indicate the number of identical substituents attached. The substituents are written in an alphabetical order.

Interpretation Introduction

(b)

Interpretation:

For the given molecule, the complete IUPAC name, is to be written.

Concept introduction:

To write the IUPAC name, first, it is important to determine the highest-priority functional group present that requires a suffix referring to Table E-1. For the molecules having two or more highest-priority functional groups, the rules are slightly different. In the IUPAC name of such molecules, the final ‘e’ of ‘ane’, ‘ene’, or ‘yne’ is not removed in the suffix. Prefixes like ‘di’, ‘tri, etc are written immediately before the suffix to specify the number of highest-priority functional groups. Add a locator number for each of the highest-priority functional groups immediately before the prefixes.

The main chain or ring containing the highest-priority functional group is to be determined. The next step is to number the main chain or ring such that carbon atoms involving the highest-priority functional group receive the lowest possible numbers. The locator number for the highest-priority functional group is written immediately before the suffix unless needed. All other functional groups in the molecule are treated as substituents and appear in the name as a prefix. Prefixes such as ‘di’, ‘tri’, ‘tetra’… etc. are used to indicate the number of identical substituents attached. The substituents are written in an alphabetical order.

Interpretation Introduction

(c)

Interpretation:

For the given molecule, the complete IUPAC name of is to be written.

Concept introduction:

To write the IUPAC name, first, it is important to determine the highest-priority functional group present that requires a suffix referring to Table E-1. For the molecules having two or more highest-priority functional groups, the rules are slightly different. In the IUPAC name of such molecules, the final ‘e’ of ‘ane’, ‘ene’, or ‘yne’ is not removed in the suffix. Prefixes such as ‘di’, ‘tri, etc are written immediately before the suffix to specify the number of highest-priority functional groups. Add a locator number for each of the highest-priority functional groups immediately before the prefixes.

The main chain or ring containing the highest-priority functional group is to be determined. The next step is to number the main chain or ring such that carbon atoms involving the highest-priority functional group receive the lowest possible numbers. The locator number for the highest-priority functional group is written immediately before the suffix unless needed. All other functional groups in the molecule are treated as substituents and appear in the name as a prefix. Prefixes like ‘di’, ‘tri’, ‘tetra’… etc. are used to indicate the number of identical substituents attached. The substituents are written in an alphabetical order.