The Journal of Organic Chemistry

Carbon-13 nuclear magnetic resonance studies of carbocations. 10. Variation of cationic carbon chemical shifts with increasing electron demand in 1, 1-diaryl-1- …

DP Kelly, MJ Jenkins

Index: Kelly, David P.; Jenkins, Margot J. Journal of Organic Chemistry, 1984 , vol. 49, # 3 p. 409 - 413

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Citation Number: 17

Abstract

A series of 28 1-X-phenyl-1-Z-phenyl-1-methyl (benzhydryl) carbocations, where the X and Z substituents have been varied over the range of electron demand (3, 4-CH2CH20, 11; 4- OCH3, 12; 4-CH3, 13; 4-F, 14; 4-H, 1; 4-CF3, 15; 3, 5-(CF&, 16), have been prepared from the corresponding alcohols by ionization in superacids and their 13C NMR spectra recorded at low temperatures (-70 to-10" C). Plots of the substituent chemical shifts of the cationic ...