(E)-4-hydroxy-2,3-dimethoxy-4-{2-[2-(2,3,4-trimethoxyphenyl)vinyl]phenyl}cyclobut-2-enone 以
四氢呋喃 为溶剂,
反应 1.0h,
生成 9-hydroxy-7,8-dimethoxy-10-(2,3,4-trimethoxyphenyl)-5,9-dihydro-5,9-methanobenzocyclohepten-6-one 、 9-hydroxy-7,8-dimethoxy-10-(2,3-dimethoxyphenyl)-5,9-dihydro-5,9-methanobenzocyclohepten-6-one