申请人:CHUGAI SEIYAKU KABUSHIKI KAISHA
公开号:EP0718291A1
公开(公告)日:1996-06-26
The use of, as a reaction solvent in the reaction of a 1,3,5-trialkyl-2-halogenobenzene and an alkali metal salt of 3-mercapto-1H-1,2,4-triazole in the presence of a copper catalyst for the preparation of a 3-(2,4,6-trialkylphenylthio)-1H-1,2,4-triazole useful as an intermediate in the preparation of herbicide compounds, a compound represented by the general formula
in which R is a lower alkyl group, Y is a methylene group or an N-(lower alkyl)imino group and Z is a divalent hydrocarbon group to form a 5-membered ring or 6-membered ring together with the group -N-CO-Y-, such as N-methyl-2-pyrrolidone, N,N'-dimethyl-2-imidazolidinone and N,N'-dimethyl propylene urea, gives the product in high yield without the danger of explosion.
在 1,3,5-三烷基-2-卤代苯和 3-巯基-1H-1,2,4-三唑的碱金属盐在铜催化剂存在下的反应中,作为反应溶剂,用于制备 3-(2,4,6-三烷基苯硫基)-1H-1,2,4-三唑,该化合物可用作制备除草剂化合物的中间体,该化合物由通式代表
其中 R 是低级烷基,Y 是亚甲基或 N-(低级烷基)亚氨基,Z 是二价烃基,与基团-N-CO-Y-一起形成 5 元环或 6 元环,如 N-甲基-2-吡咯烷酮、N,N'-二甲基-2-咪唑烷酮和 N,N'-二甲基丙烯脲,可得到高产率而无爆炸危险的产品。