Question

give the iupac name of following structure

Answer 1

4,6dimethyl 5 hydroxy hepta4eneoic acid

Answer 2

Answer:

5-hydroxy 4,6 Dimethyl Hept-3-enal

Explanation:

The main Functional group is the aldehyde group at 1st carbon and gets higher priority in numbering. With the secondary suffix being '-al' .

There is an '-OH' at 5th carbon which will act as a substituent in the main chain and will be mentioned in the primary prefix as '5-Hydroxy'

There are 2 methyl groups present at 4th and 6th carbon atoms so the primary prefix will be '4,6-Dimethyl'.

There is a double bond at 3rd carbon but since 2 vowels can't be next to each other in IUPAC naming primary prefix is changed to '-en'.

NOTE

( Secondary Prefix + Primary Prefix + Word Root + 1° suffix + 2° suffix)

( Substituents  + Cyclo/bicyclo + Carbon atom number + saturation(double triple bond)    + Functional group )