Process for preparing n-phosphonomethylglycinonitrile or...

Details Process for preparing n-phosphonomethylglycinonitrile or... Process for preparing n-phosphonomethylglycinonitrile or...

C - Chemistry, Metallurgy

07

F

C07F 9/38 (2006.01) C07F 9/40 (2006.01)

Patent

CA 2158472

A process for the manufacture of an acid salt of an alkyl ester of N-phosphonomethylglycinonitrile comprises reacting methyleneaminoacetonitrile trimer with a trialkylphosphite under anhydrous conditions and in the presence of an anhydrous acid and an inert solvent in which the methyleneaminoacetonitrile trimer starting material is at least partially soluble and the acid salt of the alkyl ester of N-phosphonomethylglycinonitrile product is substantially insoluble and thereafter recovering the precipitated acid salt of the alkyl ester of N-phosphonomethylglycinonitrile.

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