1,3-二苯基异苯并呋喃 、
dimethyl 7-bicyclo<2.2.1>hepta-2,5-diene-2,3-dicarboxylate 以
甲苯 为溶剂,
反应 5.5h,
以76%的产率得到dimethyl (4S,4aR,9R,9aS,10S)-12-(bis(methylthio)methylene)-9,10-diphenyl-1,4,4a,9,9a,10-hexahydro-9,10-epoxy-1,4-methanoanthracene-2,3-dicarboxylate