Kinetics and Mechanism of the Pyridinolysis of O-Aryl Methyl Phosphonochloridothioates in Acetonitrile
作者:Arun Kanti Guha、Md. Ehtesham Ul Hoque、Hai-Whang Lee
DOI:10.5012/bkcs.2011.32.4.1375
日期:2011.4.20
(X)] plots for substituent Xvariations in the nucleophiles exhibit a break region betweenX = H and 3-Cl, resulting in discrete two parts with one partfor the strongly basic pyridines (X = 4-MeO, 4-Me, 3-Me,H) and the other part for the weakly basic pyridines (X = 3-Cl, 3-Ac, 4-Ac), respectively (Fig. 1). The Hammett plots(log k
(X)] 亲核试剂中取代基 X 变化的图显示 X = H 和 3-Cl 之间的断裂区域,导致分离的两部分与强碱性吡啶的一部分(X = 4-MeO、4-Me、3-Me、 H)和弱碱性吡啶(X = 3-Cl,3-Ac,4-Ac)的另一部分分别(图1)。哈米特图(log k