Q. The following reaction is named as

2405 187 KEAMKEAM 2019Aldehydes Ketones and Carboxylic Acids Report Error

A

Reimer -Tiemann

33%

B

Kolbe-Schmitt

0%

C

Cannizzaro

67%

D

Gattermann

0%

E

Aldol

0%

Solution:

The given reaction is named as Cannizzaro reaction. In this reaction, aldehydes that do not have an $α$ -hydrogen atom undergoes self oxidation and reduction (dis proportionation) reaction on heating with concentrated alkali. In this reaction, one $-$ CHO group of the aldehyde is reduced to alcohol while another is oxidised to carboxylic acid salt.