Process for the carbonylation of arylalkyl halides
申请人:HOECHST CELANESE CORPORATION
公开号:EP0338852B1
公开(公告)日:1994-11-30
US6268526B1
申请人:——
公开号:US6268526B1
公开(公告)日:2001-07-31
US6555704B1
申请人:——
公开号:US6555704B1
公开(公告)日:2003-04-29
[EN] PALLADIUM CATALYZED CARBONYLATION PROCESS<br/>[FR] PROCEDE DE CARBONYLATION CATALYSEE PAR PALLADIUM
申请人:ALBEMARLE CORP
公开号:WO2000035849A1
公开(公告)日:2000-06-22
A mixture formed from an aromatic substituted alcohol and/or an aromatic substituted alkyl halide, and a copper-free palladium catalyst is carbonylated with carbon monoxide. Extremely high yields of the desired alpha-substituted carboxylic acid can be obtained in very short reaction periods by use of a palladium catalyst that is formed from a palladium compound with a valence of zero to two and a cycloalkyldiarylphosphine ligand, such as neomenthyldiphenylphosphine.