Question

IUPAC name of the structure is :

• A. $3,3$-di methyl pentane dioic acid
• B. $1$-carboxy-$2,2$-di methyl butanoic acid
• C. $1,3$-di carbo-$2,2$-di methyl propane
• D. $4$-carboxy-$3,3$-di methyl butanoic acid

Answer 1

The correct option is A $3,3$-di methyl pentane dioic acid

Carboxylic acids always get the priority of getting position 1 as two acid groups are present at position 1 and 5. At position no 3 two methyl groups are present on the same carbon atom. So the IUPAC name is $3,3$-dimethylpentanedioic acid.