Esters of the family of n-phosphonomethylglycine and their...

C - Chemistry – Metallurgy – 07 – F

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260/458.2, 260/5

C07F 9/40 (2006.01) A01N 57/20 (2006.01) A01N 57/22 (2006.01) C07F 9/38 (2006.01)

Patent

CA 1256447

ABSTRACT "ESTERS OF THE FAMILY OF N-PHOSPHONOMETHYLGLYCINE AND THEIR USE IN THE PREPARATION OF KNOWN HERBICIDES" A process for the preparation of phosphonic acid diesters having the formula: Image (I) in which R represents a hydrogenolysable group, preferably an aralkyl group, and R1 represents a hydrolysable group, wherein a phosphonic acid ester of the formula (R10)2P(0)H is reacted with formaldehyde and a compound of the formula R-NH-CH2-COOH, R and R1 having the meanings given above.

473047

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