THE BROMINATION OF METHYLARENES WITH NBS BY IRRADIATION USING A TUNGSTEN LAMP. PREPARATION OF BENZOTRIBROMIDES
作者:Shuntaro Mataka、Masayoshi Kurisu、Kazufumi Takahashi、Masashi Tashiro
DOI:10.1246/cl.1984.1969
日期:1984.11.5
Bromination of toluene and its meta- and para-substituted derivatives with NBS by irradiation using a tungsten lamp gave benzotribromides and cis- and trans-1,2-dibromo-1,2-diarylethylenes, while ortho-substituted toluenes gave benzal bromides. o-Xylene gave tetra- and pentabromides and m-xylene afforded a mixture of dibromodiarylethylenes.
用钨灯辐照的NBS对甲苯及其间位和对位取代衍生物进行溴化反应,生成了苯三溴化物以及顺式和反式的1,2-二溴-1,2-二芳烯,而邻位取代的甲苯则生成了苄溴化物。邻二甲苯生成了四溴化物和五溴化物,而间二甲苯则得到了一组二溴二芳烯的混合物。