Question

The structure of the compound whose IUPAC name is 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid is?

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

Now, 3-Ethyl-2-hydroxy-4-methylhex-3-en-5-ynoic acid

Word root is hex $\Rightarrow$ 6 carbons

Now, 3-en and 5-ynoic acid $\Rightarrow$ double bond at $C_3$

Triple bond at $C_5$

Oic acid $\Rightarrow$ -COOH group at $C_1$

Now,

3-Ethyl-2-hydroxy-4-methyl (Hydroxy is the prefix of -OH)

This is the final structure