Reactions of lithio and Grignard derivatives of 6-halogenohexa-1,2-dienes with an azirine
Abstract
The lithio and Grignard derivatives of the 6-halogeno-1,2-dienes (1) and (2) react with 3,3-dimethyl-2-phenyl-Δ1-azirine (4) to give the methylenecyclopentyl-aziridine (5), indicating that they probably exist in the form of the metallated methylenecyclopentane (9).