Question

Reaction of sodium hydrogen sulfide to cinnamaldehyde, acetaldehyde, formaldehyde and benzaldehyde.

Answer 1

The reaction of given aldehydes with Sodium hydrogen sulphite gives Bisuphite addition product of the reactant.

• The reaction of these aldehydes with Sodium Hydrogen Sulphite involves nucleophilic addition of Hydrogen Sulphite ion to the aldehyde with results from breakage of Carbon-Oxygen double bond.
• The reactions are given below in the image.