1-diazo-6-methyl-1-(2,4,6-trimethylphenylsulfonyl)-5-hepten-2-one 在
(4S)-2,2'-(1-phenylmethyl-2-phenylethylidene)bis[4-(1-methylethyl)-4,5-dihydrooxazole] 、
三氟甲烷磺酸亚铜(I)苯联合体 (2:1) 作用下,
以
甲苯 为溶剂,
以84%的产率得到(1S,5S)-6,6-dimethyl-2-oxo-1-(2,4,6-trimethylphenylsulfonyl)bicyclo[3.1.0]hexane