JEE PYQ: Alcohols Phenols And Ethers Question 1
Question 1 - 2021 (17 Mar Shift 1)
[Structure: A diketone ester structure with two carbonyl groups and an $\text{OC}_2\text{H}_5$ group] is treated with Ethylene Glycol / $\text{H}^+$ to give product “A” (Major Product).
The product “A” in the above reaction is:
(1) [Structure: Cyclic acetal protecting one ketone, with diol and $\text{OC}_2\text{H}_5$ group retained]
(2) [Structure: Cyclic acetal protecting one ketone, with $\text{OC}_2\text{H}_5$ group and ring structure]
(3) [Structure: Cyclic acetal with spiro ring system, $\text{OC}_2\text{H}_5$ group and OH group]
(4) [Structure: Cyclic acetal protecting both carbonyls with $\text{OH}$ group]
BETA
