Method for preparation of N-phosphonomethylglycine or salts

Details Method for preparation of N-phosphonomethylglycine or salts Method for preparation of N-phosphonomethylglycine or salts

1984-11-19

1986-08-12

Evans, J. E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 938

Patent

active

046055223

ABSTRACT:
A method for the production of N-phosphonomethylglycine and soluble salts thereof is disclosed in which glycinemethylenephosphinic acid or its soluble salts are reacted with an excess of an alkali or alkaline earth base for a period of time and at a sufficient temperature to cause oxidation of the glycinemethylenephosphinic acid or its soluble salts thereof to N-phosphonomethylglycine salts, from which N-phosphonomethylglycine may be obtained by acidification. The N-phosphonomethyleglycine or its soluble salts, are used as herbicides.

REFERENCES:
patent: 3052362 (1974-12-01), Lambert
patent: 3160632 (1964-12-01), Toy et al.
patent: 3799758 (1974-03-01), Franz
patent: 4331591 (1982-05-01), Baylis
patent: 4442041 (1984-04-01), Subramanian
Uhing et al., "J. Am. Chem. Soc.", vol. 83 (1961), pp. 2299-2303.

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