| 摘要 |
The new effective weed-killing pyrimidine derivative of general formula(I) is prepared by inducing a reaction of pyridine thioester compound (general formula(II)) and oxime compound (general formula(III)) in solvents, such as halogenated hydrocarbon (dichloromethane, chloroform, carbon tetrachloride, 1,2-dichloroethane) and nitrile solvents (acetonitrile, propionitrile) containing metallic salts (cupric chloride, cupric bromide) at a high temperature. R1 is hydrogen, halogen, cyano, nitro, etc. R2 is hydrogen, halogen, cyano, alkyl, alkoxy, alkyl thio, etc.
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