Diazo-acetic acid 2-(tert-butyl-diphenyl-silanyl)-1-cyclohexyl-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)-5-(tert-Butyl-diphenyl-silanyl)-4-cyclohexyl-6-methylene-3-oxa-bicyclo[3.1.0]hexan-2-one 、 (1S,4R,5S)-5-(tert-Butyl-diphenyl-silanyl)-4-cyclohexyl-6-methylene-3-oxa-bicyclo[3.1.0]hexan-2-one