pyridinium benzoylmethylide 、
2-benzoyl-2-(2,3-diphenyl-2-cyclopropenylidene)acetonitrile 以
苯 为溶剂,
反应 48.0h,
以49%的产率得到rac-(3a1R,5S,9aR)-5-benzoyl-2,4,10-triphenyl-3a1,4,5,9a-tetrahydro-7H-3a,4,7-(epimethanetriyl)pyrano[2,3,4-hi]indolizine-3-carbonitrile