Illustrated Glossary of Organic Chemistry

Enamine: A molecule containing the N-C=C functional group. The name is a contraction of alkene amine.

	+		pTsOH
Cyclohexanone, a ketone		Pyrrolidine, a secondary amine		1-Cyclohexenylpyrrolidine, an enamine

An enamine is usually synthesized by reaction of a ketone or an aldehyde with a secondary amine and an acid catalyst such as p-toluenesulfonic acid (pTsOH).