Process for the preparation of dialkyl malonates

Details Process for the preparation of dialkyl malonates Process for the preparation of dialkyl malonates

1989-05-18

1991-06-25

Shippen, Michael L.

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

Organic compounds

Carboxylic acid esters

502 24, 560190, 560193, 562590, C07C 6736, B01J 3868

Patent

active

050269003

ABSTRACT:
A process for the preparation of alkyl malonates by carbonylation of chloroacetate in the presence of a carbonyl source, a carbonylation catalyst, such as chromium carbonyl and an aliphatic alcohol, this reaction being carried out in a two-phase liquid medium.
A process for recycling the catalyst also forms part of the invention.

REFERENCES:
patent: 3116306 (1963-12-01), Heck et al.
patent: 4399300 (1983-08-01), Prange et al.
patent: 4508917 (1985-04-01), Jenck
patent: 4539423 (1985-09-01), Statani et al.
patent: 4570016 (1986-02-01), Bruner et al.
patent: 4578367 (1986-03-01), Hofmann
patent: 4645855 (1987-02-01), Reuvers et al.

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