Process for producing n-phosphonomethylglycine

Details Process for producing n-phosphonomethylglycine Process for producing n-phosphonomethylglycine

1990-06-25

1991-09-10

Evans, J. E.

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

Organic compounds

Phosphorus acids or salts thereof

C07F 938

Patent

active

050475797

ABSTRACT:
An improved process is disclosed for the preparation of N-phosphonomethylglycine by the oxidation of N-phosphonomethyliminodiacetic acid. In the process N-phosphonomethyliminodiacetic acid is oxidized with a peroxide to form an intermediate, N-phosphonomethyliminodiacetic acid-N-oxide, and thereafter, adding a metabisulfite compound in the presence of a molybdenum compound to convert the intermediate to N-phosphonomethylglycine.

REFERENCES:
patent: 3950402 (1976-04-01), Franz
patent: 3954848 (1976-05-01), Franz
patent: 4062669 (1977-12-01), Franz
patent: 4579689 (1986-04-01), Hershman et al.
patent: 4582650 (1986-04-01), Felthouse
patent: 4853159 (1989-08-01), Riley et al.
patent: 4898972 (1990-02-01), Fields et al.
patent: 4952723 (1990-08-01), Fields et al.

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