abstract |
Disclosed are a quaternary triphenylphosphonium salt compound, a preparation method therefor, and the uses thereof. The structure of the quaternary compound is as shown in formula I. The preparation method comprises carrying out a nucleophilic reaction of the compound shown of formula VII and triphenylphosphine in an organic solvent with or without a catalyst to obtain the compound as shown in formula I. The compound as shown in formula I can be used for preventing and treating diseases caused by a plurality of germs such as oomycetes, basidiomycetes, ascomycetes and semi-known fungi on a variety of plants. Excellent results have been obtained in powdery mildew, corn rust, watermelon anthracnose and the like, and a good control effect can be ensured at low concentrations. |