2-[[[4-halo-2-fluoro-5(alkyl or alkenyloxy)phenyl]amino]carbonyl or
申请人:Sumitomo Chemical Company, Limited
公开号:US04593094A1
公开(公告)日:1986-06-03
A condensed phenylurazol of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, Y and Z are each an oxygen atom or a sulfur atom and R is a C.sub.1 -C.sub.3 alkyl group, an allyl group or a propargyl group and n is an integer of 4 or 5, which is useful as a herbicide. The condensed phenylurazols of the above formula wherein Z is an oxygen atom and n is an integer of 4 can be produced by treatment of a urea of the formula: ##STR2## wherein R' is a lower alkyl group (e.g. methyl, ethyl, n-propyl, isopropyl) and X, Y and R are each as defined above with a base (e.g. sodium methoxide, sodium hydroxide, potassium hydroxide) in an inert solvent (e.g. water, toluene, benzene, methanol, ethanol) at a temperature of 0.degree. to 200.degree. C.
4-(2-fluoro-4-halo-5-substituted phenyl)urazols, and herbicidal use
申请人:Sumitomo Chemical Company, Limited
公开号:US04622063A1
公开(公告)日:1986-11-11
A condensed phenylurazol of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, Y and Z are each an oxygen atom or a sulfur atom and R is a C.sub.1 -C.sub.3 alkyl group, an allyl group or propargyl group and n is an integer of 4 or 5, which is useful as a herbicide.