1-[3-diazo-2-oxo-3-(2,4,6-trimethylphenylsulfonyl)propyl]-1-methyl-2,5-cyclohexadiene 在
copper(I) trifluoromethanesulfonate benzene 、 [cyclo-{-C=N-(S)CH(iPr)-CH
2O-}]2CBn
2 作用下,
以
甲苯 为溶剂,
反应 27.0h,
生成 (1R,5S,6S,7R)-1-methyl-8-oxo-7-(2,4,6-trimethylphenylsulfonyl)tricyclo[4.3.0.0
5,7]non-2-ene 、 (1S,5R,6R,7S)-1-methyl-8-oxo-7-(2,4,6-trimethylphenylsulfonyl)tricyclo[4.3.0.0
5,7]non-2-ene