An organic compound that does not undergo a rea... - JAMB Chemistry 2020 Question

The addition of hydrogen cyanide to a carbonyl group of an aldehyde or most ketones produces a cyanohydrin.

Sterically hindered ketones, however, don't undergo this reaction. Aldehydes and ketones react with primary amines to form a class of compounds called imines, however, Imines of aldehydes are relatively stable while those of ketones are unstable.