Preparation of phosphonomethylated amino acids

Details Preparation of phosphonomethylated amino acids Preparation of phosphonomethylated amino acids

1984-08-30

1985-10-22

Evans, J. E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260456A, C07F 938

Patent

active

045487596

ABSTRACT:
A process for preparing phosphonomethylated amino acids comprising reacting a glycine derivative with a halosulfonic acid to form a N-sulfonylglycine derivative, then phosphonomethylating the N-sulfonylglycine derivative with formaldehyde and a phosphorus source to obtain a phosphonomethylated N-sulfonylglycine derivative which is then hydrolyzed to the corresponding phosphonomethylated amino acid, e.g. glyphosate or the acid derivative.

REFERENCES:
patent: 2609390 (1952-09-01), Bersworth
patent: 3288846 (1966-11-01), Irani et al.
patent: 3977860 (1976-08-01), Franz
patent: 4422982 (1983-12-01), Subramian
patent: 4439373 (1984-03-01), Nagubandi
patent: 4457873 (1984-07-01), Nagubandi
patent: 4491548 (1985-01-01), Nagubandi

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