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 borontrichloride 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 borontrichloride mainly affords chlorinated nitroanilines, whereas with borontrifluoride it gives N-o-nitrophenylaniline. In aromatic solvents at 60 °C in the presence of boron trifluoride–diethyl
The reaction of organic azides with boron trichloride: a new simple route for the production of fused heterocycles containing nitrogen
作者:Paolo Zanirato
DOI:10.1039/c39830001065
日期:——
The reaction of borontrichloride with an ortho-aryl and ortho-diazoaryl phenyl azides at room temperature yielded fused azoles via 1,5-cyclization of a probable singlet nitrenium ion intermediate, arising from displacement of molecular nitrogen from the azido group.