A novel process for producing a 2-halogenobenzamide compound useful as a raw material or active ingredient for medicines and agricultural chemicals. The process, which is for producing a 2-halogenobenzamide compound represented by the general formula (I):
(wherein R1, R2, R3, R4, and R6 may be the same or different and each represents hydrogen or C1-6 alkyl; R5 represents C1-6 alkyl; k is 1 or 2; Y1, Y2, Y3, and Y4 may be the same or different and each represents hydrogen, halogeno, etc.; and X represents chlorine, bromine, or iodine), is characterized by reacting an benzamide compound with a halogenating agent in the presence of a palladium catalyst to obtain a substituted benzamide compound and then reacting the resultant substituted benzamide compound with an oxidizing agent after or without isolating the substituted benzamide compound.
一种新型生产2-卤代苯甲酰胺化合物的工艺,可用作药品和农业
化学品的原料或活性成分。该工艺用于生产由通式(I)表示的2-卤代苯甲酰胺化合物(其中R1、R2、R3、R4和R6可以相同或不同,每个代表氢或C1-6烷基;R5代表C1-6烷基;k为1或2;Y1、Y2、Y3和Y4可以相同或不同,每个代表氢、卤素等;X代表
氯、
溴或
碘),其特征在于在
钯催化剂存在下,将苯甲酰胺化合物与卤化剂反应以获得取代苯甲酰胺化合物,然后在未分离取代苯甲酰胺化合物或分离后将所得的取代苯甲酰胺化合物与氧化剂反应。