Q73. - Organic Chemistry

Question

Question: Keeping in mind the mechanism for the dissolving metal reduction of alkynes to trans alkenes in Chapter 12, write a stepwise mechanism for the following reaction, which involves the conversion of an α,β-unsaturated carbonyl compound to a carbonyl compound with a new alkyl group on the α carbon.

Step-by-Step Solution

Answer

Answer

Step 1: Lithium-ammonia mixture

Lithium ammonia mixture is used to selectively reduce $\alpha ,\beta -$unsaturated ketone.

The reagent selectively reduces the carbon-carbon double bond.

Step 2: Mechanism of the given reaction

The mechanism of the given reaction is provided below:

                                      Mechanism of the given reaction