4-(2-cyanoacetoxy)methyl-2,4-dimethyl-2-cyclohexen-1-one 在
potassium tert-butylate 作用下,
以
叔丁醇 为溶剂,
反应 3.0h,
生成 (1R*,5RS,6R,7S)-5-cyano-1,7-dimethyl-3-oxabicyclo<4.4.0>decane-4,8-dione 、 (1R*,5S,6R,7R)-5-cyano-1,7-dimethyl-3-oxabicyclo<4.4.0>decane-4,8-dione