Question

$\huge\red{\sf Nmste}$


What is Stephan and rosenmund rxn with Examples..??​

Answer 1

Answer:

As discussed in the introduction, the Rosenmund reduction is a reaction where acid chlorides are converted into aldehydes by employing hydrogen gas over palladium poisoned by barium sulfate. An example for this catalytic hydrogenation of acyl chlorides forming aldehydes is shown below.Alkyl nitriles on reduction with stannous chloride and hydrochloric acid in dry ether give corresponding imine hydrochlorides which on acid hydrolysis, give corresponding aldehydes. This reaction is known as Stephen reaction. Ketones cannot be prepared by Stephen reaction.

@kishu636

follow me

Answer 2

Ans= Rosenmund Reaction :Acylchlorides when hydrogenated over catalyst palladium on barium Sulphate yield aldehydes. Example :Stephen Reaction :Nitriles are reduced to corresponding imines with stannous chloride in the presence of Hydrochloric acid which on hydrolysis give corresponding aldehyde.

I hope its helpful to you. ❣

~ITZNEHA~