Gas-phase heteroaromatic substitution. 8. Electrophilic attack of ethyl cation on pyrrole, N-methylpyrrole, furan, and thiophene
…, R Bucci, F Grandinetti, M Speranza
Index: Laguzzi; Bucci; Grandinetti; Speranza Journal of the American Chemical Society, 1990 , vol. 112, # 8 p. 3064 - 3068
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Abstract
Abstract: Ethyl cation, obtained in the dilute gas state, together with CH5+, from the y- radiolysis of methane, has been allowed to react with pyrrole, N-methylpyrrole, furan, and thiophene, in the pressure range 50-760 Torr and in the presence of variable concentrations of a gaseous base (NMe3). The mechanism of the substitution and of the subsequent isomerization of the relevant ionic intermediates is discussed, and the intrinsic positional ...
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