Method for preparation of N-phosphonomethylglycine

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

1982-08-23

1984-01-31

Ford, John M.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

2605025G, C07D25104

Patent

active

044291248

ABSTRACT:
A method for preparing N-phosphonomethylglycine comprising (a) O,O-dialkylaminomethylphosphonate with formaldehyde to produce a triazine; (b) reacting the triazine formed in step (a) with an acyl halide to form the O,O-dialkyl-N-phosphonomethyl-N-chloromethyl acetamide of the acyl halide; (c) reacting the amide formed in step (b) with metal cyanide to form O,O-dialkyl-N-cyanomethyl-N-acetamide; and (d) hydrolyzing the acetamide formed in step (c) to yield N-phosphonomethylglycine.

REFERENCES:
patent: 2685581 (1954-08-01), Coover
patent: 4376857 (1983-03-01), Valdiserri et al.

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