Efficient syntheses of functionalized piperidines through extremely regioselective Rh-catalyzed cyclohydrocarbonylation of amido-ω,ω′-dienes
摘要:
The highly regioselective cyclohydrocarbonylation of 4-amido-1,6-heptadienes catalyzed by Rh-BIPHEPHOS complex gives functionalized piperidines quantitatively, which serve as versatile intermediates for the syntheses of a variety of piperidine and quinolizidine alkaloids. Reaction of 3-Boc-amino-1,5-hexadiene affords the corresponding dehydropiperidine-aldehyde exclusively via site and regioselective hydroformylation. Possible mechanisms for these reactions are proposed. (C) 1998 Elsevier Science Ltd. All rights reserved.
PROCESS FOR HYDROCARBONYLATIONS IN SUPERCRITICAL CARBON DIOXIDE
申请人:The Research Foundation ofState University of New York
公开号:EP1066236A1
公开(公告)日:2001-01-10
EP1066236A4
申请人:——
公开号:EP1066236A4
公开(公告)日:2001-06-06
US5962744A
申请人:——
公开号:US5962744A
公开(公告)日:1999-10-05
[EN] PROCESS FOR HYDROCARBONYLATIONS IN SUPERCRITICAL CARBON DIOXIDE<br/>[FR] PROCEDE D'HYDROCARBONYLATION DANS DU DIOXYDE DE CARBONE SUPERCRITIQUE
申请人:THE RESEARCH FOUNDATION OF STATE UNIVERSITY OF NEW YORK
公开号:WO1999050214A1
公开(公告)日:1999-10-07
(EN) A process comprising subjecting at least one compound containing at least one carbon-carbon double bond or at least one carbon-carbon triple bond, hydrogen and carbon monoxide, to a hydrocarbonylation reaction in supercritical carbon dioxide, in the presence of a Group VIII transition metal catalyst precursor, and a phosphite ligand.(FR) L'invention concerne un procédé consistant à soumettre au moins un composé contenant au moins une double liaison carbone-carbone ou au moins une triple liaison cabone-carbone, de l'hydrogène et du monoxyde de carbone, à une réaction d'hydrocarbonylation dans du dioxyde de carbone supercritique, en présence d'un précurseur de catalyseur à métaux de transition du Groupe VIII, et un ligand de phosphite.
Process for hydrocarbonylations in supercritical carbon dioxide
申请人:The Research Foundation of State University of New York
公开号:US05962744A1
公开(公告)日:1999-10-05
A process comprising subjecting at least one compound containing at least one carbon--carbon double bond or at least one carbon--carbon triple bond, hydrogen and carbon monoxide, to a hydrocarbonylation reaction in supercritical carbon dioxide, in the presence of a Group VIII transition metal catalyst precursor, and a phosphite ligand.