New stereoselective syntheses of cis- and trans-2-methyl-4-arylpiperidines

Autor: Napora Freddy Andre, Khalid Diker, Laurent Delhaye, Alain Merschaert, Daniel Giraud, Michel Vanmarsenille, Pieter Delbeke, Willy Brione, Vincent Mancuso, Jean-Paul Kestemont
Rok vydání: 2003
Předmět:
Zdroj: Tetrahedron Letters. 44:4531-4534
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(03)01021-9
Popis: A stereoselective approach has been developed for the synthesis of cis- and trans-2-methyl-4-arylpiperidines from a common intermediate. The Ni-catalyzed hydrogenolysis of N-Boc-2-methyl-4-aryl-4-piperidinols, obtained by addition of organometallic reagents on N- Boc-2-methyl-4-piperidone, afforded the trans derivatives with Lip to 95% selectivity whereas the corresponding cis isomers were obtained in the presence of palladium catalysts. (C) 2003 Elsevier Science Ltd. All rights reserved.
Databáze: OpenAIRE