Diazo-acetic acid 1-tert-butyl-2-trimethylsilanyl-buta-2,3-dienyl ester 在
bis(N-tert-butylsalicylaldiminato)copper(II) 作用下,
以
甲苯 为溶剂,
生成 (1S,4S,5S)-4-tert-Butyl-6-methylene-5-trimethylsilanyl-3-oxa-bicyclo[3.1.0]hexan-2-one 、 (1S,4R,5S)-4-tert-Butyl-6-methylene-5-trimethylsilanyl-3-oxa-bicyclo[3.1.0]hexan-2-one