SUBSTITUTED PHENYLUREA DERIVATIVE AND HERBICIDE CONTAINING SAID DERIVATIVE AS ACTIVE COMPONENT

摘要

NEW MATERIAL:The N'-phenyl-N-methylurea derivative of formula I (A is alkylene; R1 is methyl or methoxy; R2 is H or methyl). EXAMPLE:1-[4-(2,3-Dihydro-2-methyl-5-benzofuranylmethyloxy)pheny-l]-3- methoxy-3-methylurea. USE:A herbicide. PREPARATION:The objective compound can be produced e.g. by reacting a compound of formula II [e.g. 4-(2,4-dihydro-2-methyl-5-benzofuranylmethyloxy) aniline] with a compound of formula III (Z is halogen) (e.g. N-methoxy-N- methylcarbamoyl chloride) optionally in a solvent (e.g. acetone) in the presence of a base (e.g. pyridine) at 0-150 deg.C.