Abstract
In the presence of an equimolar amount of triethylamine, 2,5-diphenyl-3,3,4,4-tetracyanopyrrolidine 1 reacts with vinyl ketones 3 to give l-amino-5-acyl-2,3,3-tricyano-5-[phenyl(benzylidenamino)methyl]cyclopent-l-enes 6; the structure of molecule 6b has been determined by an X-ray study of the monocrystal.
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