Patent EP-0426476-A1 (EP)
Inventor: HIRATSUKA MITSUNORI
IPC: A01N57/24
Filed: 1990-11-01
Abstract: A pyrimidine derivative useful as a herbicide is represented by the formula
     wherein each of R 1  and R 2 , which may be the same or different, represents a hydrogen atom, a C 1 -C 6  alkyl group, a C 3 -C 6  alkenyl group, a C 3 -C 6  alkynyl group, a halo C 1 -C 6  alkyl group, a C 1 -C 6  alkoxy C 1 -C 6  alkyl group, a C 3 -C 6  alkenyloxy C,-C 6  alkyl group, a C 3 -C 6  alkynyloxy C 1 -C 6  alkyl group, a C 1 -C 6  alkoxycarbonyl Ci-C 6  alkyl group, a C 3 -C 6  alkenyloxycarbonyl C 1 -C 6  alkyl group, a C 3 -C 6  alkynyloxycarbonyl C 1 -C 6  alkyl group, a cyano C 1 -C 6  alkyl group, a group represented by the formula,
     (in which each of R 5  and R 6 , which may be the same or different, represents a hydrogen atom, a C 1 -C 6  alkyl group, a C 3 -C 6  alkenyl group or a C 3 -C 6  alkynyl group, and n represents an integer of 1, 2, 3, or 4), a group represented by the formula,
     (in which n is as defined above, R 7  represents a C 1 -C 6  alkyl group, a C 3 -C 6  alkenyl group or a C 3 -C 6  alkynyl group, and m represents an integer of 0, 1 or 2), a cyclo C 3 -C 8  alkyl group, or an optionally substituted phenyl group, an optionally substituted benzyl group, or R 1  and R 2 , bonded together at their ends, form an optionally substituted C 4 -C 7  alkylene group or an optionally substituted C 3 -C 6  alkylene group containing hetero atom; the hetero atom in R' and R 2  means a nitrogen atom, an oxygen atom or a sulfur atom; each of R 3  and R 4 , which may be the same or different, represents a C 1 -C 6  alkyl group, a C 1 -C 6  alkoxy group, a halo C 1 -C 6  alkoxy group or a halogen atom; X represents an oxygen atom or a sulfur atom; Z represents N or CY 4 ; each of Y 1 , Y 2 , Y 3 , which may be the same or different, represents a hydrogen atom, a halogen atom, a C 1 -C 6  alkyl group, or a Ci-C 6  alkoxy group; and Y 4  represents a hydrogen atom, a hydroxyl group, a mercapto group, a nitro group, a halogen atom, a C 1 -C 6  alkyl group, a C 2 -C 6  alkenyl group, a C 2 -C 6  alkynyl group, a C 1 -C 6  alkoxy group, a C 3 -C 6  alkenyloxy group, a C 3 -C 6  alkynyloxy group, a halo C 1 -C 6  alkyl group, a halo C 2 -C 6  alkenyl group, a halo C 2 -C 6  alkynyl group, a halo C 1 -C 6  alkoxy group, a halo C 3 -C 6  alkenyloxy group, a halo C 3 -C 6  alkynyloxy group, a C 1 -C 6  alkoxy C 1 -C 6  alkyl group, a C 3 -C 6  alkenyloxy C 1 -C 6  alkyl group, a C 3 -C 6  alkynyloxy C 1 -C 6  alkyl group, a cyano group, a formyl group, a carboxyl group, a C 1 -C 6  alkoxycarbonyl group, a C 3 -C 6  alkenyloxycarbonyl group, a alkynyloxycarbonyl group; an optionally substituted phenyl group, an optionally substituted phenoxy group, an optionally substituted phenylthio group, an optionally substituted benzyloxy group, an optionally substituted benzylthio group, a group represented by the formula,
     (in which R 5  and R 6  are as defined above), a group represented by the formula,
     (in which R 5  and R 6  are as defined above),
     (in which R 7  and m are as defined above), a group represented by the formula,
     (in which R 7  and X are as defined above), or a group represented by the formula,
     (in which R 7 , m and n are as defined above), each optionally substituted group in the above being substituted with a C 1 -C 6  alkyl group, a C 1 -C 6  alkoxy group, a halo C 1 -C 6  alkyl group, a C 1 -C 6  alkoxycarbonyl group or a halogen atom.