Question

Give IUPAC name of CH\(_3\)–CH=CH–CHO.

Hint:

For aldehydes, the suffix "-al" is used, and the numbering of the carbon chain starts from the carbonyl group.

Answer 1

The IUPAC name of CH\(_3\)–CH=CH–CHO is 3-Butenal-2-al. This compound consists of an aldehyde group (-CHO) and a conjugated double bond between the second and third carbon atoms. The numbering is done to give the lowest possible number to the aldehyde group.