Reaction of cyclopent-2-en-1-one ethylene acetal with dienophiles via its ring-opened enol ether form. Single step synthesis of norbornan-2-one ethylene acetals
Abstract
Cyclopent-2-en-1-one ethylene acetal undergoes Diels–Alder reaction with a variety of dienophiles via its ring-opened enol ether, 2-(2-hydroxyethoxy)cyclopenta-1,3-diene, under neutral conditions to give norbornan-2-one ethylene acetals.