Kinetics of desulphonative double Smiles' rearrangement of N-(2-hydroxyalkyl)-p-nitrobenzenesulphonamides
作者:Anthony C. Knipe、Joseph Lound-Keast
DOI:10.1039/p29760001741
日期:——
intramolecular aromatic displacement of the sulphonamide group by the neighbouring hydroxy-group and (ii) rearrangement of the intermediate 2-(p-nitrophenoxy)alkylamine have been determined for this double Smiles' rearrangement sequence. Intermediate aminoethers have been detected spectroscopically for the first time and have in some cases been isolated.
对于形成的机构支承Ñ(2-羟乙基) - - p -nitroanilines通过碱催化的脱磺化ñ - (2-羟乙基) - p -nitrobenzenesulphonamides已经通过动力学调查获得。还研究了在氮上带有烷基和芳基取代基或羟基上的C-烷基取代基α-或β-的衍生物。取代基对(i)磺酰胺基团被相邻羟基的分子内芳族置换和(ii)中间体2-(p的重排)的速率和碱基依赖性的影响已经确定了该双Smiles的重排序列的-硝基苯氧基)烷基胺。中间氨基醚是首次在光谱上检测到,在某些情况下已被分离出来。