2-[(E)-butadienesulfonyl]ethyl methacrylate 以
甲苯 为溶剂,
反应 29.5h,
生成 (4aSR,9aRS)-9a-methyl-5,5-dioxo-1,2,4a,9a-tetrahydro-8-oxa-5λ
6-thiabenzocycloheptan-9-one 、 (4aSR,9aSR)-9a-methyl-5,5-dioxo-1,2,4a,9a-tetrahydro-8-oxa-5λ
6-thiabenzocycloheptan-9-one