Illustrated Glossary of Organic Chemistry

Alpha, beta-unsaturated (α,β-unsaturated): A molecule having a pi bond between the alpha and beta carbons adjacent to a carbonyl group.

Generic α,β-unsaturated molecule		Methyl vinyl ketone An α,β-unsaturated ketone (an enone)		Dimethyl acetylenedicarboxylate An α,β-unsaturated ester