Electronic effect, steric hindrance, and anchimeric assistance in oxidation of sulphides. Neighbouring-group participation through sulphur–oxygen non-bonded interaction
作者:Ferenc Ruff、Árpád Kucsman
DOI:10.1039/p29880001123
日期:——
set of sulphides o- and p-XC6H4SMe, the electronic effect, steric hindrance, and anchimeric assistance for electrophilic Cl+ addition by TsNHCl and O-transfer by NalO4 were investigated by a kinetic method. The steric effect and anchimeric assistance of the ortho-substituents were evaluated by comparing the reactivity of ortho- and para-substituted compounds (κ=ko/kp). For neighbouring-group activity
使用一组硫化物o-和p -XC 6 H 4 SMe,通过动力学方法研究了电子效应,空间位阻和TsNHCl加亲电Cl +和NalO 4进行O-转移的邻位助剂。通过比较邻位和对位取代的化合物的反应性(κ= k o / k p),评估了邻位取代基的空间效应和邻位助剂。对于邻居基团的活性,获得以下顺序:CH 2 OH〜CH 2OME〜CH 2 CO 2我