Abstract
Diluted acids (typically 0.05 M HCl) are shown to be very effective media to promote the alkylation of phenols with activated alcohols under hydrothermal conditions (from 150 to 200 degrees C). These results are an elegant alternative to "usual" Friedel-Crafts alkylations avoiding the use of alkylchlorides as alkylating agents and the use of Lewis acidic promoters or concentrated acids but also ...
Abstract
Diluted acids (typically 0.05 M HCl) are shown to be very effective media to promote the alkylation of phenols with activated alcohols under hydrothermal conditions (from 150 to 200 degrees C). These results are an elegant alternative to "usual" Friedel-Crafts alkylations avoiding the use of alkylchlorides as alkylating agents and the use of Lewis acidic promoters or concentrated acids but also shade some light on the processes occurring during the hydrothermal carbonisation (HTC) of biomass. (C) 2011 Published by Elsevier Masson SAS on behalf of Academie des sciences.
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