
%0 Journal Article
%A Kelly, DP 
%A Brown, HC 
%T A convenient procedure for the quantitative generation of carbocations in super acid media
%J Australian Journal of Chemistry
%D 1976/05/01
%V 29
%N 5
%P 957-965
%K 
%R https://doi.org/10.1071/CH9760957
%U https://www.publish.csiro.au/paper/CH9760957 
%X A method is described for the preparation of relatively concentrated (c.1 M) solutions of alkyl carbocations in SbF5-SO2ClF suitable for 13C n.m.r, investigations. This method, which uses syringe techniques, allows the quantitative conversion of precursors, which are soluble in SO2CIF at -78&#xba;, into the corresponding cations. The carbocations prepared in this way include isopropyl (1), t-butyl (2), 1,l-dimethylpropyl (3) 1,l-dimethylbutyl (4), 1-ethyl-1-methylpropyl (5), 1,1,2-trimethylpropyl (6), 1-methylcyclopentyl (7), 1,2-dimethylcyclopentyl (8), 2-norbornyl (10), 2-methylnorbornyl (11) and 1-methyl-1-phenylethyl(12). Other methods were needed to generate the bicyclo[3,3,0]octyl(9), 1-adamantyl (l3), 2-methyladamantyl(14) and benzhydryl(l5) cations. 13C parameters are given for all the cations. 
