Solvolytic studies of the highly crowded 1-aryl-1-phenyl-1-(trifluoromethyl)methyl bromide and tosylates
作者:Kwang-Ting Liu、Mann-Yan Kuo
DOI:10.1016/s0040-4039(01)80816-9
日期:——
In the titled system the remarkably high tosylate/bromide solvolysis rate ratio of 1.56 × 106 : 1 indicates a highly strained ground state, and the reverse order of reactivity for substrate having 1-(4-trifluoromethyl)phenyl vs. that having 1-(3-trifluoromethyl)phenyl suggests the twisting of the aryl group from coplanarity in the cationic transition state.