Croatica Chemica Acta, Vol. 45 No. 3, 1973.
Original scientific paper
Structures of Protonated Methyl Phenols in Antimony Pentafluoride-Fluorosulfuric Acid at - 60 °C
John W. Larsen
; Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37916, U.S.A . and Institute Rueter Boskovic, 41001 Zagreb, Croatia, Yugoslavia
Mirjana Eckert-Maksić
; Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37916, U.S.A . and Institute Rueter Boskovic, 41001 Zagreb, Croatia, Yugoslavia
Abstract
The site of protonation of a series of methyl substituted phenols
in 11.5 mole '°/o SbF5 in HS03F was determined using NMR spectrometry.
Some substituent effects are explicable without invoking
specific salvation. Protonation para to the hydroxy group was
favored, but was blocked completely in all but one case by .a
p-alkyl group. In para substituted phenols, ortho protonation predominated.
Both oxygen and ring protonation were observed for
the p-cresol.
Keywords
Hrčak ID:
197021
URI
Publication date:
12.11.1973.
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