The course of the thermal or base-promoted dehydrohalogenation of the 1 : 1 adducts of primary arylamines and boron trichloride or boron tribromide is profoundly affected by ortho-substitution in the benzene nucleus. On heating in solution the 1 : 1 adducts of boron trichloride and aniline or o-toluidine give excellent yields of the corresponding tri-B-chloroborazole, but the evolution of hydrogen
伯芳基胺与
三氯化硼或
三溴化硼的1:1加合物的热或碱促进的脱氢卤化过程受到苯核中邻位取代的深刻影响。上加热溶液中的1:
三氯化硼和
苯胺或1个加合物Ò甲
苯胺,得到相应的三-优异的产率乙-chloroborazole,但是
氯化氢的进化如下在两种情况下不同的速率变化规律。