[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.