Method for preparation of N-phosphonomethylglycine

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

1983-06-27

1986-02-11

Sutto, Anton H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260944, C07F 938

Patent

active

045698023

ABSTRACT:
A method of preparing N-phosphonomethylglycine comprising; (a) reacting N-hydroxymethyl haloacetamide with a chlorinating agent, preferably thionyl chloride to form N-chloromethyl haloacetamide; (b) reacting N-chloromethyl haloacetamide with a phosphite to form N-haloacetylaminomethyl phosphonate; (c) reacting the phosphonate with derivative of haloacetic acid to form N-haloacyl-N-(cyanomethyl or carboalkoxymethyl) phosphonate; and (d) hydrolyzing this later phosphonate to yield N-phosphonomethylglycine.

REFERENCES:
Wagner et al., "Synthetic Organic Chemistry", (1953) pp. 92, 666-667, 678-679, and 416.
Kosolapoff, "Organophosphorus Compounds" (1950) pp. 121-124, and 139.

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