Mononuclear heterocyclic rearrangements. Effect of the structure of the side chain on the reactivity. Part 3. Rearrangement of some N-(5-phenyl-1,2,4-oxadiazol-3-yl)-N′-arylformamidines into 1-aryl-3-benzoylamino-1,2,4-triazoles in acetonitrile in the presence of triethylamine
作者:Vincenzo Frenna、Gabriella Macaluso、Nicolò Vivona、Domenico Spinelli、Giovanni Consiglio、Elisabetta Mezzina
DOI:10.1016/s0040-4020(01)85255-8
日期:1994.1
The apparent pseudo-first-order rate constants for the title reaction give a curvilinear plot versus tertiary amine concentration, according to the equation kA (ku, + K1k2[TEA])/(1 + K1[TEA]). This shows the occurrence of two different reaction pathways; the one, independent of [TEA] and the other, dependent on [TEA], which involves a fast conversion of the substrate into an acid-base adduct or an
表观伪一级速率常数为标题反应得到的曲线绘图与叔胺浓度,根据以下等式ķ甲(ķ ü,+ ķ 1 ķ 2 [TEA])/(1 + ķ 1 [TEA ])。这表明发生了两种不同的反应途径。一个独立于[TEA],另一个独立于[TEA],这涉及将底物快速转化为酸碱加合物或离子对,然后缓慢转化为相应的三唑。还研究了取代基对这些反应的影响。