What is the major organic product obtained from the reaction? What is the major organic product obtained from the following reaction?

Question

Anu Bhardwaj · Accepted Answer

Short version: you’re basically right across the board. A couple of tiny tune-ups below.

Aldol condensation (NaOH, H₂O, Δ)
Your reasoning is spot-on: base forms the enolate → aldol addition → heat drives dehydration to the α,β-unsaturated carbonyl. The correct choice is the conjugated enone (C).
(Whether the starting carbonyl is an aldehyde or a ketone, the logic and outcome you gave are correct under these conditions.)
(CH₃)₂CuLi then H₃O⁺ with cyclohexenone
Correct call on the reaction type: 1,4- (conjugate) addition. The product is 3-methylcyclohexanone (double bond gone). One tiny wording tweak: after the cuprate adds to the β-carbon, the enolate oxygen is protonated on workup; we don’t “protonate the α-carbon.” Final answer matches option B.
Conjugation check

So: 1 = C, 2 = B, 3A = non-conjugated, 3B = conjugated.

Chemistry