(1R,2R,6R,7R)-2,4-Diethyl-3-oxo-5,6-diphenyl-8-aza-tricyclo[5.3.2.02,6]dodeca-4,9,11-triene-8-carboxylic acid ethyl ester 以
苯 为溶剂,
反应 0.33h,
以96%的产率得到rac-ethyl (1R,1aS,1a1S,3R,3aR,7R,7aR,8R)-1a,3-diethyl-2-oxo-1,8-diphenyl-1,1a,1a1,2,3,3a,7,7a-octahydro-6H-6-aza-1,3,7-(epimethanetriyl)cyclobuta[cd]azulene-6-carboxylate