作者:J. Matthew Wood、Paul S. Hinchliffe、Andrew P. Laws、Michael I. Page
DOI:10.1039/b200184e
日期:2002.4.29
2-sultam. Oxyanions, but not amines or thiols, react with N-benzoylethane-1,2-sultam in water by a nucleophilic ring opening reaction confirmed by product analysis and kinetic solvent isotope effects. A Brønsted plot for this reaction has two distinct correlations with βnuc = 0.52 and 0.65 for weak and strong bases, respectively, although a statistically corrected plot may indicate a single correlation.
乙烷1,2-舒马坦在30°C下的ap K a为12.12±0.06,并且其碱水解速率显示出pH依赖性,反映了这一点,因此在高于p K a的pH值下观察到的拟一级反应速率常数为pH值无关。没有证据表明相邻的基团参与N -α-羧基苄基乙烷-1,2-亚马六胺或N-(羟氨基羰基甲基)-2-苄基乙烷-1,2-亚马六胺的水解。通过产物分析和动力学溶剂同位素效应确认,通过亲核开环反应,氧合阴离子而不是胺或硫醇与水中的N-苯甲酰基乙烷-1,2-磺酰胺反应。该反应的布朗斯台德图与β有两个明显的相关性 尽管经统计学校正的图可能指示单一相关性,但弱碱和强碱的nuc分别为0.52和0.65。