Ammonolysis of morpholine-2,5-diones: participation of the primary amide group. Part 2
作者:Antonio Arcelli、Alessandro Bongini、Gianni Porzi、Samuele Rinaldi
DOI:10.1002/poc.1884
日期:2012.2
The ammonolysis of three morpholine‐2,5‐dione derivatives was investigated and the mechanism ascertained by kinetic studies and theoretical calculations. The kinetics, followed by high‐performance liquid chromatography analysis, evidenced the presence of two intermediates, which were isolated and characterized. The ammonolysis occurs with a complex mechanism involving two consecutive reactions followed
研究了三种吗啉-2,5-二酮衍生物的氨解反应,并通过动力学研究和理论计算确定了机理。动力学,然后进行高效液相色谱分析,证明了存在两种中间体,这些中间体已被分离和表征。发生氨解反应的机制复杂,涉及两个连续的反应,然后是两个平行的反应。整个反应的第二步涉及伯酰胺基团的邻氨基苯甲酸酯辅助。伪一阶速率常数是通过适当的方程式计算得出的,这些方程式描述了过程的单个步骤。使用模型化合物进行了邻位伯酰胺基团参与的计算密度泛函理论研究,并生成了过渡态。理论计算证明氨起质子转移的作用。版权所有©2011 John Wiley&Sons,Ltd.