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Asymmetric synthesis. XXXV1. Synthesis of 2-methyl 5-substituted substituted piperidines from chiral non-racemic lactams

✍ Scribed by Teresa Varea; Monique Dufour; Laurent Micouin; Claude Riche; Angèle Chiaroni; Jean-Charles Quirion; Henri-Philippe Husson

Publisher: Elsevier Science
Year: 1995
Tongue: French
Weight: 212 KB
Volume: 36
Category: Article
ISSN: 0040-4039
DOI: 10.1016/0040-4039(94)02435-e

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## Abstract The reaction of substituted phenyl isocyanates with 2‐amino‐2‐phenylpropanenitrile and 2‐amino‐2‐(4‐nitrophenyl)propanenitrile has been used to prepare substituted 1‐(1‐cyanoethyl‐1‐phenyl)‐3‐phenylureas. In anhydrous phosphoric acid the first products to be formed from 1‐(1‐cyanoethyl‐