N-(perfluoroacyl)-N-phosphonomethyl glycine compounds, method of preparing same
AssigneeMonsanto Company
InventorMelvin L. Rueppel
Life of this patent
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Abstract
N-(perfluoroacyl)-N-phosphonomethyl glycine compounds are prepared by the reaction of N-phosphonomethyl glycine with perfluoroacyl anhydrides employing an excess of the perfluoroalkanoic acid as the solvent. The N-(perfluoroacyl)-N-phosphonomethyl glycine compounds are useful as post-emergent herbicides.
Claims4
A process for producing a compound of the formula ##EQU7## wherein n is an integer of from 1 to 4 which comprises forming an admixture of N-phosphonomethyl glycine and a perfluoroalkanoic acid and then adding thereto a perfluoroalkanoic acid anhydride of the formula ##EQU8## wherein n has the above-defined meaning and maintaining the resulting admixture at a temperature at which the anhydride and the N-phosphonomethyl glycine react to produce said compound.
Dependencies are inferred from the claim text.