Highly reactive sulfinates. The synthesis, solvolysis and rearrangement of benzyl trichloromethanesulfinates
作者:Samuel Braverman、Ytzhak Duar
DOI:10.1016/s0040-4020(01)88389-7
日期:1990.1
Benzyl trichloromethanesulfinates are easily obtained by oxidation of the corresponding sulfenates, in excellent yields. Examination of their reactivity revealed some unique features. In contrast to benzyl arenesulfinates which undergo solvolysis with complete S-O bond fission, these esters undergo solvolysis with exclusive C-O bond fission, and with a rate enhancement by a factor of 6 powers of ten
苄基三氯甲烷亚磺酸盐很容易通过氧化相应的亚磺酸盐而获得,产率很高。检查它们的反应性显示出一些独特的特征。与通过完全SO键裂变进行溶剂分解的苄基亚芳基磺酸盐相反,这些酯通过独家CO键裂变进行溶剂分解,并且速率可提高10倍6的倍数,与甲苯磺酸甲苯磺酸酯相当。类似地,与苄基亚芳基磺酸盐不同,这些酯在极性非羟基溶剂中加热时,容易重排成亚砜。已在各种条件下对这些反应进行了动力学研究,并通过检查Hammett和Winstein相关性分析了溶剂分解对取代基和溶剂作用的敏感性。讨论了两种反应的机理。