The Conversion of Mixed N,O-Diacylated 2-Aminophenols to 2-Substituted Benzoxazoles
作者:Sean M. Kerwin、Mark R. DeLuca、Irach B. Taraporewala
DOI:10.3987/com-99-8509
日期:——
Base-Catalyzed Acyl Exchange Reactions of<i>N</i>,<i>O</i>-Diacyl-<i>o</i>-aminophenols. Substituent and Temperature Effects on the Equilibrium Constants
Substituent and temperature effects on the equilibrium constants for the triethylamine-catalyzed acyl exchange reactions of N-(substituted benzoyl)-O-acetyl-o-aminophenols have been investigated by 1H NMR spectroscopy. It was found that the standard enthalpy change ΔH° in acyl exchange processes, estimated from temperature dependence of the equilibrium constant, correlates well with the standard free