2-Chloro-4,5-disubstituted-thiazoles, process for their preparation, use as antidotes against damage caused by herbicides and mixtures containing them
申请人:MONSANTO COMPANY
公开号:EP0027019A1
公开(公告)日:1981-04-15
2-chloro-4,5-disubstituted-thiazoles have been found to be effective in reducing herbicidal injury to sorghum plants due to the application thereto of acetanilide and thiocarbamate herbicides.
The compounds of the present invention have the formula
where R is equal to halogen, hydroxy, mercapto, methylthio, lower alkyl carbonyloxy, lower alkoxy, lower alkoxy carbonyl, lower alkoxy carbonyl (lower) alkoxy, lower alkoxy thioxomethylthio, benzyloxy, -NR2R3,
R is lower alkyl, halo (lower) alkyl, phenyl or phenyl substituted by one to three groups, which may be the same or different, selected from the group consisting of halogen, lower alkyl, trifluoromethyl and cyano; R2 and R3 independently equal hydrogen, lower alkyl or lower alkenyl.
研究发现,2-氯-4,5-二取代噻唑类化合物可有效减少乙酰苯胺类和硫代氨基甲酸酯类除草剂对高粱植物造成的除草伤害。
本发明的化合物具有如下式子
其中 R 等于卤素、羟基、巯基、甲硫基、低级烷基羰氧基、低级烷氧基、低级烷氧基羰基、低级烷氧基羰基(低级)烷氧基、低级烷氧基硫代甲硫基、苄氧基、-NR2R3、
R 是低级烷基、卤代(低级)烷基、苯基或被一至三个基团取代的苯基,这些基团可以相同或不同,选自卤素、低级烷基、三氟甲基和氰基组成的组;R2 和 R3 独立地等于氢、低级烷基或低级烯基。