Manufacture of N-phosphonomethylglycine and its salts

Details Manufacture of N-phosphonomethylglycine and its salts Manufacture of N-phosphonomethylglycine and its salts

1994-06-20

1996-03-19

Dees, Jose G.

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

Organic compounds

Phosphorus acids or salts thereof

C07F 938

Patent

active

055004857

ABSTRACT:
N-Phosphonomethylglycine and its salts are manufactured by hydrolysing N-phosphonomethyl-2-oxazolidinone in an aqueous medium and thereafter oxidising the hydrolysis product in an aqueous alkaline medium using an oxygen-containing gas in the presence of an oxidation catalyst, for example a platinum or palladium catalyst optionally containing a promoter such as bismuth.

REFERENCES:
patent: 3969398 (1976-07-01), Hershman
patent: 4235809 (1980-11-01), Redmore
patent: 4442041 (1984-04-01), Subramanian
patent: 4547324 (1985-10-01), Wong
patent: 4810426 (1989-03-01), Fields, Jr.
patent: 4853159 (1989-08-01), Riley et al.
Vinke et al., Heterogeneous Catalysis and Fine Chemicals II, pp. 385-394, 1991, Amsterdam, Netherlands.
Van Dam et al., Applied Catalysis, 61 (1990) pp. 187-197.
Despeyroux et al., in New Developments in Scientific Oxidation (Centi, ed.), pp. 159 et seq. (1990).

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