Enzymatic preparation of n-(phosphonomethyl) glycine

Details Enzymatic preparation of n-(phosphonomethyl) glycine Enzymatic preparation of n-(phosphonomethyl) glycine

C - Chemistry, Metallurgy

12

P

C12P 13/04 (2006.01) C07C 51/373 (2006.01) C07F 9/38 (2006.01) C12P 7/40 (2006.01) C12P 7/42 (2006.01)

Patent

CA 2123079

The invention provides a process for producing mixtures of glyoxylic acid and aminomethyl phosphonic acid and the subsequent production of N-(phosphonomethyl)glycine, also known as glyphosate. The process comprises preparing in situ a mixture of glyoxylic acid and aminomethylphosphonic acid (AMPA) by enzymatically reacting glycolic acid and oxygen in an aqueous solution in the presence of aminomethylphosphonic acid and catalysts consisting of glycolate oxidase and catalase. The resulting mixture is then hydrogenated to produce N-(phosphonomethyl)glycine, a post-emergent phytotoxicant and herbicide.

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