Triazolines.<b>XXXIII</b>. Nonregiospecific 1,3-cycloaddition of aryl azides to vinylpyridines: A unique route to the synthesis of 2-pyridyl substituted aziridines<i>via</i>unstable 4-pyridyltriazoline intermediates
作者:Zhaiwei Lin、Pankaja K. Kadaba
DOI:10.1002/jhet.5570340601
日期:1997.11
vinylpyridines with variously substituted phenyl azides, clearly indicates that the electron donating methyl and methoxy groups on the phenyl azide facilitate reaction, while the electron withdrawing nitro group has a retarding effect. This is consistent with an increase in the HOMOazide energy and hence in azide reactivity. According to the FMO model, the 1,3-cycloaddition of aryl azides to vinylpyridines