Method for preparation of n-phosphonomethylglycine

Details Method for preparation of n-phosphonomethylglycine Method for preparation of n-phosphonomethylglycine

C - Chemistry, Metallurgy

07

F

260/501.5

C07F 9/38 (2006.01)

Patent

CA 1212691

METHOD FOR PREPARATION OF N-PHOSPHONOMETHYLGLYCINE Abstract of the Disclosure Disclosed is a method for the preparation of N-phosphononethyl- glycine which comprises the steps of (1) reacting 1,3,5-tris(alkoxy- or aryloxy-substituted carbonylmethyl) hexahydro-s-triazine, with a substi- tuted phosphorus compound having the formula PXYZ wherein X is a halogen, Y and Z are independently selected from the group consisting of halogen, alkoxy having from 1 to 10 carbon atoms, and aryloxy, in the presence of a protic acid and a low molecular weight carboxylic acid; (2) heating said reactants to a temperature ranging from about 10 to about 25°C for a sufficient period of time to cause the formation of an N-phosphonomethyl- glycine ester,; and (3) hydrolyzing said phosphonomethylglycine ester to N-phoshonomethylglycine.

445469

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