Question

Question:What cyclic product is formed from each dihalide using the malonic ester synthesis?

Short answer

Answers

The cyclic products formed from each reaction using dihalide are shown below:-

Step-by-step solution

Malonic ester reaction

The process of conversion of diethyl malonate to a carboxylic acid in three steps is known as the malonic ester reaction. It takes place when $\alpha$-hydrogen is abstracted from diethyl malonate followed by a nucleophilic attack on the halide group. The last steps are hydrolysis and decarboxylation.

Intramolecular malonic ester reaction

In the case of intramolecular malonic ester, rings having three to six atoms are formed provided the appropriate dihalide is used as starting material.

The cyclic product formed in reaction a

The cyclic product formed in reaction b