... 0002-7863/82/1504-1937$01.25/0 0 1982 American Chemical Society ... (22) (a) Vogel, A. I. 'A Textbook of Practical Organic Chemistry"; 3rd ed ... trifluoroethoxide ion concentration for buffer catalysis of the elimination reaction of 2-@-nitrophenyl)ethyl bromide in 60 vol % Me2S0 in ...