| 摘要 |
1-Thiadiazolyl-6-acyloxytetrahydropyrimidinones (I; R1 = alkyl, alkenyl, haloalkyl, alkoxy, alkylthio, alkylsulfonyl, alkylsulfinyl or cycloalkyl; R2 = alkyl, alkenyl, haloalkyl; R6 = alkyl, haloalkyl, alkenyl, alkinyl, alkoxyalkyl, cycloalkyl; X = alkyl, halogen, haloalkyl, nitro, cyano, alkoxy; m, n = O-3; R7, R8 = methyl, ethyl), useful as herbicide, were prepd. by reaction of compd. (II) and acid anhydride (III) in the presence of toluene sulfonic acid at 50-90≦̸C. The reaction of compd. (II) and (IV) at 10-30≦̸C also give title compound.
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