ethyl 1-benzylidene-7a-hydroxy-6-oxo-4-phenylperhydroindene-5-carboxylate 在
对甲苯磺酸 作用下,
以
苯 为溶剂,
生成 ethyl 1-benzylidene-6-hydroxy-4-phenyl-2,3,3a,4-tetrahydro-1H-indene-5-carboxylate 、
ethyl 1-benzylidene-6-hydroxy-4-phenyl-2,3,4,7-tetrahydro-1H-indene-5-carboxylate