Monoesters and diesters of n-alkyl substituted amino methyl...

Details Monoesters and diesters of n-alkyl substituted amino methyl... Monoesters and diesters of n-alkyl substituted amino methyl...

C - Chemistry, Metallurgy

07

F

260/327, 260/350

C07F 9/40 (2006.01) A01N 57/18 (2006.01) C07F 9/572 (2006.01) C07F 9/6553 (2006.01)

Patent

CA 1212116

ABSTRACT This invention provides a process for the preparation of phosphonate compounds useful as herbicides of the formula Image (1) wherein Z, R and R, are typically hydrocarbon based substituents. The process comprises (a) reacting (i) a trisubstituted phosphite of the formula P(OR1)3 wherein R1 is as defined above, with (ii) water, and (iii) a compound of the formula Image wherein Z is as aforedefined to prepare a crude phospho- nate composition containing said phosphonate compound, and (b) thereafter recovering said phosphonate compound from said crude phosphonate composition.

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