TEMPERATURE DEPENDENCE OF ACTIVATION VOLUME FOR ACETOLYSIS OF 2-ARYL-2-METHYLPROPYL TOSYLATES
作者:Akira Sera、Hiroaki Yamada、Hitoshi Masaki
DOI:10.1246/cl.1980.1533
日期:1980.12.5
The activation volume of the acetolysis of the title compounds was found to have an unexpectedly large temperature dependence. The activation volume—temperature profile of a steep concave was observed which was responsible for the previously reported anomaly of the substituent dependence of the activation volume.
The decarboxylative acetoxylation of carboxylicacids using a combination of PhI(OAc)2 and I2 in a CH2Cl2/AcOH mixed solvent is reported. The reaction was successfully applied to two types of carboxylicacids containing an α-quaternary and a benzylic carbon center under mild reaction conditions. The resulting acetates were readily converted into the corresponding alcohols by hydrolysis.