| abstract |
NEW MATERIAL:A pyrimidine derivative shown by the formula I [R 1 is H, phenyl group-substituted methyl, or benzyloxycarbonyl (which may be subjected to nucleus substitution with halogen, alkoxy, or nitro); R 2 is -NR 5 R 6 (R 5 and R 6 are H, or alkyl), -OR 7 (R 7 is alkyl), -SR 8 (R 8 is alkyl); R 3 and R 4 are alkyl]. n EXAMPLE: 2-(4-Benzylpiperazino)-4-ethylaminopyridine-5-carboxyl-ic acid diethyl amide. n USE: A herbicide. n PREPARATION: For example, a mixture of 2-(4-Benzylpiperazino)-4-ethyl aminopyrimidine-5-carboxy-lic acid shown by the formula II and chloroform is reacted with triethylamine, thionyl chloride, and diethylamine, to give the example compound shown by the formula III. n COPYRIGHT: (C)1986,JPO&Japio |