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Chapter 22: Q.69-I (page 1204)

Question: Predict the products of the following reactions

i.

Short Answer

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Answer

Step by step solution

01

Claisen ester condensation

In this sodium ethoxide is used for condensation to avoid transesterification. Ethoxide is the base that protonates the acidic hydrogen to form β keto ester.

02

Decarboxylation

It is the reaction that leads to the removal of the carbonyl group and releases carbon di-oxide (C02) . Decarboxylation occurs by providing heat in the reaction

03

Mechanism

  1. Acidic hydrogen protonated
  2. Formation of the enolate ion
  3. Decarboxylation

Mechanism

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Most popular questions from this chapter

Propose mechanisms for the following reactions.

Biochemists studying the structure of collagen (a fibrous protein in connective tissue) found cross-links containing α,βunsaturated aldehydes between protein chains. Show the structures of the side chains that react to form these crosslinks, and propose a mechanism for their formation in a weakly acidic solution.

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