Process for producing N-phosphonomethylglycine derivatives

Details Process for producing N-phosphonomethylglycine derivatives Process for producing N-phosphonomethylglycine derivatives

1983-04-15

1984-12-04

Hollrah, Glennon H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2605025F, C07C 938

Patent

active

044863560

ABSTRACT:
The invention provides a process for producing water-soluble mono and di-N-Phosphonomethylglycine amine and iminourea salts from N-phosphonomethyliminodiacetic acid derivatives comprising oxidizing an aryl substituted iminourea salt of N-phosphonomethyliminodiacetic acid of the general formula VI ##STR1## wherein Ar.sub.1 and Ar.sub.2 are each independently selected from the group consisting of phenyl, alkylphenyl and halophenyl to form a N-phosphonomethylglycine iminourea salt of the general formula VII ##STR2## reacting the salt of formula VII with an amine, iminourea, diamine, or diiminourea having a molecular weight below 600 and a pKa above 10 in aqueous solution and separating the resulting water insoluble aryl iminourea from the resulting water soluble N-phosphonomethylglycine salt product. The invention also provides herbicidal N-phosphonomethylglycine compounds and compositions prepared by the above process.

REFERENCES:
patent: 3853530 (1974-12-01), Franz
patent: 3950402 (1976-04-01), Franz
patent: 3954848 (1976-05-01), Franz
patent: 3969398 (1976-07-01), Hershman
patent: 3977860 (1976-08-01), Franz
patent: 4147719 (1979-04-01), Franz
patent: 4148624 (1979-04-01), Maier
patent: 4397676 (1983-08-01), Bakel

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