Chapter 14.20, Problem 3QQ

Interpretation Introduction

Interpretation:

IUPAC name for the given compound has to be chosen from the given options.

Concept Introduction:

IUPAC rules for naming thioalcohols that contain single thiol group:

• • Longest carbon chain has to be identified that contains thiol group also.  The chain name is obtained by adding the suffix “-thiol”.  If the compound contains an unsaturated bond, then the respective name has to be changed with regard to alkane.
• • The numbering has to be given so that the thiol group gets the least numbering.
• • Name and location of any other substituent present in the chain has to be identified.
• • If in a ring the thiol group is present, then that carbon is numbered 1 and the numbering then proceeds counterclockwise or clockwise in a way that substituents present if any gets the least numbering.

IUPAC rules for naming thioalcohols that contain more than one thiol group:

• • The same rules said above is followed but the prefix di-, tri-, tetra etc is added corresponding to the number of thiol groups that is present.