ethyl {[6-(N,N-diphenylcarbamoyloxy)methyl-8,9-dihydro-5H-benzocyclo-hepten-1-yl]oxy}acetate 、 ethyl {[6-(N,N-diphenylcarbamoyloxy)-methyl-8,9-dihydro-7H-benzocyclohepten-1-yl]oxy}acetate 在
sodium carbonate 、
间氯过氧苯甲酸 作用下,
以
二氯甲烷 为溶剂,
生成 ethyl {[6-(N,N-diphenylcarbamoyloxy)methyl-6,7-epoxy-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yl]oxy}acetate 、
ethyl {[6-(N,N-diphenylcarbamoyloxy)methyl-5,6-epoxy-6,7,8,9-tetrahydro-5H-benzocyclohepten-1-yl]oxy}acetate