申请人:Ishihara Sangyo Kaisha Ltd.
公开号:US04415739A1
公开(公告)日:1983-11-15
4-Benzoyl-5-hydroxypyrazoles useful as herbicidal active ingredients, their intermediate or stabilizers against heat, oxidation or ultraviolet light are produced by a condensation of a pyrazolone, tetrachloromethane and a benzene compound in the presence of an aluminium halide, followed by a hydrolysis reaction with industrial advantages.
4-苯甲酰基-5-羟基吡唑酮作为除草活性成分,它们的中间体或稳定剂可抵抗热、氧化或紫外光,通过在铝卤化物存在下对吡唑酮、四氯甲烷和苯化合物进行缩合反应,随后进行水解反应制备,具有工业优势。