abstract |
A herbicidal compound, N-phosphonomethyl glycine is prepared by reacting 1,3,5-tricyanomethyl-hexahydro-1,3,5,-triazine with a dihydrocarbyl hydrogen phosphite in the presence of a catalyst such as a Lewis acid to form an ester of N-phosphonomethylglyconitrile which ester is thereafter hydrolyzed and the desired N-phosphonomethyl glycine is recovered. |