Cyanomethyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-...

Details Cyanomethyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-... Cyanomethyl ester of 4-(p-trifluoromethylphenoxy)-.alpha.-...

A - Human Necessities

01

N

260/476.7, 71/10

A01N 39/02 (2006.01)

Patent

CA 1097681

Abstract The present invention provides a novel herbicidally active ester, namely the cyanomethyl ester of 4-(p-trifluorome- thylphenoxy)-.alpha.-phenoxypropionic acid of the formula Image It is a further object of the invention to provide a her- bicidal composition which contains this novel ester as ac- tive component and also a post-emergence method of selec- tively controlling monocotyledonous weeds in crops of di- cotyledonous plants. The invention furthermore provides a process for the manufacture of the novel ester by methods whcih are known per se by reaction of a corresponding tri- fluoromethyl-phenoxy-.alpha.-phenoxypropionic acid halide with hydroxyacetonitrile (cyanomethanol) or by reaction of 4-(p-trifluoromethylphenoxy)-phenol with a .alpha.-halopropionic acid cyanomethyl ester.

320726

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