1,3 DIMETHYL PYRAZOLE DERIVATIVES

摘要

Pyrazole derivatives of formula (I): (I) (R1 is methyl, halogen or nitro; n is 2 or 3; R2 is hydrogen, C1-4 alkyl, C3-4 alkenyl or aralkyl; R3 is C1-4 alkyl, C3-4 alkenyl or phenyl; A is C1-5 alkylene) are of use as herbicides.