thiazolium N-dicyanomethylide 、
乙醇 、
(2,3-diphenylcyclopropen-1-ylidene)propanedinitrile 反应 24.0h,
以85%的产率得到rac-(2R,3S,6R,7S,7aS,8S)-8-(dicyanomethyl)-2-ethoxy-6,7-diphenyltetrahydro-3,6,7-(epimethanetriyl)pyrrolo[2,1-b]thiazole-5,5(6H)-dicarbonitrile