A process for the production of benzal bromides which contain an electrophilic substituent in the ortho- and/or para-position of the formula (Ia), or of mixtures thereof with the corresponding benzyl bromides of the formula (Ib), ##STR1## IN WHICH R represents an electrophilic substituent in the ortho- and/or para position, by treating correspondingly substituted toluenes with elementary bromine under irradiation with visible light in a two-phase system which consists of an aqueous and an organic phase, which process comprises carrying out the reaction in the presence of a base.
一种生产含有配位基取代基的
苯甲酸溴化物的方法,所述取代基位于公式(Ia)的邻-和/或对-位置,或者与公式(Ib)相应的
苯甲酸溴化物的混合物中,其中R代表邻-和/或对-位置的配位基取代基,通过在含有
水相和有机相的两相体系中,在可见光照射下处理相应取代
甲苯和元素
溴,该方法包括在碱存在下进行反应。