Thieme Chemistry Journals Awardees – Where Are They Now? Stereoselective Cycloaddition of 2,2,2-Trifluorodiazoethane with α-Methylene-β-lactams: Facile Synthesis of Trifluoromethyl-Substituted Spirocyclic β-Lactams
作者:Jun-An Ma、Shen Li、Wen-Jie Cao
DOI:10.1055/s-0036-1588363
日期:——
The cycloadditions of 2,2,2-trifluorodiazoethane with α-methylene-β-lactams were investigated. The reaction proceeded via a [3+2] cycloaddition mode under metal-free conditions, whereas the use of an iron catalyst enabled a cyclopropanation to occur. This protocol offers a facile access to a broad range of trifluoromethyl containing spirocyclic β-lactams.