| 摘要 |
PROBLEM TO BE SOLVED: To obtain a pyrimidine-based herbicide, having a high herbicidal effect on weeds, while exhibiting less damage to crops such as rice, wheat, barley, cone, cotton, soybean, also showing less environmental pollution such as exhibiting less toxicity to mammalian animals, fishes and shellfishes, having less remaining property, and further having properties of long lasting, easy for producing its preparation, or the like. SOLUTION: The pyrimidine derivative is expressed by formula (A) (wherein, R is a 1-6C haloalkyl or a 1-6C alkoxy group which may be substituted with a halogen atom; R' is cyano or fluorine; and Ph is a phenyl which may be substituted). COPYRIGHT: (C)2004,JPO
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