ChemInform Abstract: Diels‐Alder Reactions with Diacceptor‐Substituted Methylenecyclopropanes ‐ A New Aspect for the Twofold Nucleophilic Substitution at Cyclopropanes.

Abstract

The highly reactive (diacylmethylene)cyclopropanes (II), generated from the cyclopropane (I) and acetyl chloride, are trapped by dienes such as (III) to give the adducts (IV).