Method for the preparation of N-phosphonomethyl glycine

Details Method for the preparation of N-phosphonomethyl glycine Method for the preparation of N-phosphonomethyl glycine

1990-06-14

1991-08-20

Evans, J. E.

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

Organic compounds

Phosphorus acids or salts thereof

C07F 938

Patent

active

050416286

ABSTRACT:
N-phosphonomethyl glycine is prepared by the reaction of glycine with an aqueous-alcoholic solution of formaldehyde in the presence of a base selected from the group consisting of alkali and alkaline-earth metal hydroxides, the reaction of the solution thus obtained with a trialkylphosphite and hydrolysis in an aqueous medium, with recovery of the N-phosphonomethyl glycine by crystallization.

REFERENCES:
patent: 2796443 (1957-06-01), Meyer et al.
patent: 4065491 (1977-12-01), Pfliegel et al.
patent: 4237065 (1980-12-01), Ehrat
patent: 4439373 (1984-03-01), Nagubandi
patent: 4486359 (1984-12-01), Hajnoczki et al.
The Merck Index, 8th ed. (1968) pp. 4-69.

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