| abstract |
The present invention provides a novel ligand for alkoxycarbonylation capable of achieving a good yield of ester and a mixture of diastereomers as a catalyst containing the ligand. A diastereomeric mixture of 1,1′-bis (phosphino) compounds each substituted on at least one heteroaryl group on two phosphorus atoms, present in a specific molar ratio, Has a specific diastereomer. For example, a diastereomeric mixture of 1.1'-bis (tert-butyl-2-pyridylphosphino) ferrocene. A Pd complex mixture catalyst containing the ligand. [Selection figure] None |