作者:Nicholas J. Baxter、Andrew P. Laws、Laurent Rigoreau、Michael I. Page
DOI:10.1039/p29960002245
日期:——
N-Methyl β-sultam undergoes acid- and base-catalysed hydrolysis in water at 30 °C and I= 1.0 mol dm–3 with kH+= 2.79 dm3 mol–1s–1 and kOH= 1.38 × 10–2 dm3mol–1 s–1. These second-order rate constants are approximately 109 and 107, respectively, greater than those for a similar acyclic sulfonamide. The entropy of activation for the acid-catalysed hydrolysis of the β-sultam is –80 J K–1 mol–1 which may
N-甲基β-舒马坦在30°C的水中经过酸和碱催化水解,I = 1.0 mol dm –3,k H + = 2.79 dm 3 mol –1 s –1,k OH = 1.38×10 – 2 dm 3摩尔–1 s –1。这些二阶速率常数分别比类似的无环磺酰胺大约10 9和10 7。β-sultam的酸催化水解的活化熵为–80 JK –1 mol –1这可能表示单分子开环,而对于碱催化的反应,–184 JK –1 mol –1,与双分子过程一致。