Process for the preparation of an aldehyde

Details Process for the preparation of an aldehyde Process for the preparation of an aldehyde

1999-05-03

2000-11-28

Padmanabhan, Sreeni

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568451, C07C 4550

Patent

active

061538000

ABSTRACT:
Process for the preparation of an aldehyde through hydroformylation of an unsaturated organic compound in the presence of a catalyst system comprising rhodium of iridium and a multidentate organic phosphite ligand, wherein a monodentate phosphine is present.
The process according to the invention can advantageously be carried out for the preparation of methyl-5-formylvalerate, which is an intermediate product in the preparation of a caprolactam or adipic acid, which are in turn raw materials for the preparation of nylon-6 and nylon-6,6, respectively.

REFERENCES:
patent: 4169861 (1979-10-01), Hughes
patent: 4260828 (1981-04-01), Morell et al.
patent: 5234113 (1993-08-01), Ramey
patent: 5391801 (1995-02-01), Sato et al.
patent: 5663369 (1997-09-01), Kreutzer et al.
patent: 5874641 (1999-02-01), Burke et al.

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