Question

Hexamethylenediamine is named as __________ in the IUPAC system.

(a) Hexane-1,3-diamine

(b) Hexane-1,4-diamine

(c) Hexane-1,5-diamine

(d) Hexane-1,6-diamine

I have been asked this question at a job interview.

My question is taken from Amines Nomenclature topic in chapter Amines of Chemistry – Class 12

Answer 1

Right choice is (d) Hexane-1,6-diamine

For explanation I would say: The formula is NH2-(CH2)6-NH2 which is the chain of 6 carbon atoms and two amino groups at the ends of the chain, i.e., first and sixth carbon. This type of substitution is named and hexamethylene.