thiazolium N-dicyanomethylide 、
ethyl 2-cyano-2-(2,3-diphenyl-2-cyclopropenylidene)-acetate 以
四氢呋喃 为溶剂,
反应 144.0h,
以96%的产率得到rac-(1R,2a1S,3S,4aS,7aR,8S)-6-ethoxy-1,8-diphenyl-2a1,4a-dihydro-3H-5-oxa-4-thia-2a-aza-1,3,7a-(epimethanetriyl)cyclopenta[cd]indene-2,2,7(1H)-tricarbonitrile