ArC(CH 3 )(SO 2 Ph)OMs 和 α-溴亚硫酸盐 ArC(CH 3 )(SO 2 Ph)Br 的溶剂解脱甲磺酸盐的练习曲。L'ordre de reactiverelative lors de la solvolyse des substrats du type p-CH 3 C 6 H 4 C(CH 3 )BrE, ou E est un groupe electronegatif, est COPh>PO(OEt) 2 >CN>SOPh>CF 3 >SO 2 Ph
Solvolysis of 1-aryl-1-(trifloromethyl)ethyl tosylates. Evidence for an extremely high electron demand carbenium ion intermediate due to the presence of α-trifluoromethyl substituent
作者:Kwang-Ting Liu、Ching-Fen Sheu
DOI:10.1016/0040-4039(80)88074-9
日期:1980.1
The rate-retarding effect of ?-trifluoromethyl group observed in the solvolysis of 1-aryl-1-(trifluoromethyl)ethyltosylates is so profound that a very large negative α+ value, −8.82, is resulted and the 1-phenyl derivative becomes even less reactive than benzyl tosylate.