Solvolytic reactivity of 1-(1-methyl-2-pyrrolyl)-2,2,2-trifluoroethyl p-nitrobenzoate
作者:Jean-Marc Kwong-Chip、Thomas T. Tidwell
DOI:10.1016/s0040-4039(00)99454-1
日期:1989.1
1-(1-Methyl-2-pyrrolyl)-2,2,2-trifluoroethyl p-nitrobenzoate (1) solvolyses to form a carbocation intermediate 4 as evidenced by the dependence on the solvent ionizing power YOTs and the formation of substitution products. The rate ratio k(H)/k(CF3) of only 40 indicates strong electron donation to the destabilized carbocation.
对硝基苯甲酸1-(1-甲基-2-吡咯基)-2,2,2-三氟乙基酯(1)溶剂化形成碳正离子中间体4,这取决于对溶剂电离能力Y OT的依赖和取代产物的形成。 。k(H)/ k(CF 3)的比率仅40表示对不稳定的碳正离子的强电子给体。