| abstract |
The present invention relates to a substituted 5- (4,6-dimethoxypyrimidin-2-one) represented by the following general formula (I) which can be usefully used as an intermediate for the preparation of pyrimidyloxybenzoic acid oxime ester compounds having herbicidal activity Yl) oxy-4H- (1,3) -benzodioxin-4-one derivatives and processes for their preparation.n n n n n n n n In this formula,n n n R 1 and R 2 each independently represent hydrogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl having 1 to 5 halogen atoms or an alkylbenzene ring,n n n X and Y each independently represents oxygen or sulfur,n n n R 3 , R 4 , R 5 and R 6 are each independently hydrogen, C 1 -C 4 alkyl or C 1 -C 4 haloalkyl having 1 to 5 halogen atoms,n n n m is 0 or 1; |