Question

Question:Draw the Claisen product formed from each ester.

Short answer

Answer

a.

b.

Step-by-step solution

Claisen reaction

The Claisen reaction is the reaction between two ester groups in the presence of an alkoxide base to form a $\mathit{\beta }$-keto ester. The reaction proceeds via the formation of an enolate intermediate.The general reaction scheme is given below.

Claisen reaction

The mechanism of the reaction is given below.

Claisen Reaction mechanism

Determination of products

a. The mechanism of the Claisen reaction for the given compound is shown below.

Mechanism for a

b.

The mechanism of the Claisen reaction for the given compound is shown below.

Mechanism for b