Question

Convert benzene to benzaldehyde?

Answer 1

1. Etard reaction.

2.By methylation of benzene followed by chlorination and then reaction with aqueous KOH and then mild oxidation yields Benzaldehyde.

Answer 2

Hello dear,

● Benzene to benzaldehyde -
There are several ways to convert benzene into benzaldehyde.

1) Riemer-Tiemann reaction -
- In this reaction, benzene is converted to benzaldehyde with the help of CHCl3 & NaOH.

C6H6 ---> C6H5-CHO
Catalyst - CHCl3 & NaOH

2) Gatterman-Koch reaction -
- In this reaction, benzene is converted to benzaldehyde with the help of CO/HCl & AlCl3/CuCl.

C6H6 ---> C6H5-CHO
Catalyst - CO/HCl & AlCl3/CuCl

[Refer to image attachment for better understanding.]

Hope this helps...