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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


Puni tekst: engleski pdf 6.001 Kb

str. 503-510

preuzimanja: 220

citiraj


Sažetak

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.

Ključne riječi

Hrčak ID:

197021

URI

https://hrcak.srce.hr/197021

Posjeta: 350 *