Method for preparation of N-phosphonomethylglycine

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

1984-07-27

1985-10-15

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

548112, 548229, 71 86, C07F 938

Patent

active

045473242

ABSTRACT:
A method for the production of N-phosphonomethylglycine which comprises reacting a 2-oxazolidone starting compound of the formula ##STR1## with p-formaldehyde, then adding a substituted phosphorus compound of the formula PXYZ wherein X is halogen, and Y and Z are independently selected from the group consisting of halogen, alkoxy having from 1-10 carbon atoms, and aryloxy, said reaction being conducted in the presence of a low molecular weight carboxylic acid solvent for the reactants, at a combination of time and temperature sufficient to cause the reaction to go to completion, and converting the 2-oxo-3-oxazolidinyl methyl phosphonic acid thus formed to N-phosphonomethylglycine.

REFERENCES:
patent: 4128558 (1978-12-01), Hendricks et al.
patent: 4374131 (1983-02-01), Petrillo
Kosolapoff et al., Organic Phosphorus Compounds, vol. 7, Wiley-Interscience, New York, (1976), pp. 7 & 8.

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