An O --> N Acyl Transfer. An Important Activation Step for a Formal Nucleophilic Substitution in a Cyclopropane Derivative

Article abstract of DOI:10.1021/jo00231a016

Acylated (piperidinocyclopropyl)dimedone 8 proved to be a suitable starting material for smooth generation of a highly reactive cyclopropylidenedimedone species (9).The latter can be trapped in a < 2 + 4 > cycloaddition with enol ethers 14 leading to 15 o