The reaction of ortho-substituted aromatic azides with boron trichloride or trifluoride
作者:Piero Spagnolo、Paolo Zanirato
DOI:10.1039/p19880002615
日期:——
The reaction of boron trichloride or trifuoride with ortho-aryl, -diazoaryl, and -arylazoaryl phenyl azides in benzene at room temperature generally gives fused azoles in high yields. Treatment of 2-nitrophenyl azide with boron trichloride mainly affords chlorinated nitroanilines, whereas with boron trifluoride it gives N-o-nitrophenylaniline. In aromatic solvents at 60 °C in the presence of boron trifluoride–diethyl
在室温下,三氯化硼或三氟硼化物与邻-芳基,-重氮芳基和-芳基偶氮芳基苯基叠氮化物在苯中的反应通常以高收率得到稠合的唑。用三氯化硼2-硝基苯基叠氮化物的治疗主要得到氯化硝基苯胺,而用三氟化硼它给ñ - Ö -nitrophenylaniline。在60°C的芳族溶剂中,在三氟化硼-乙醚的存在下,2-叠氮基联苯形成咔唑和2-(芳基氨基)联苯,其形成很大程度上取决于所用溶剂的亲核性。然而,它的伪一级分解率是在苯比在甲苯或稍大米二甲苯。在相同条件下,苯叠氮化物形成二芳基胺。