Superacid Catalyzed Hydroxyalkylation of Aromatics with Ethyl Trifluoropyruvate: A New Synthetic Route to Mosher’s Acid Analogs
作者:G. K. Prakash、George A. Olah、Ping Yan、Béla Török
DOI:10.1055/s-2003-37517
日期:——
A new superacid catalyzed Friedel-Crafts hydroxyalkylation of aromatics with ethyl trifluoropyruvate is described. The trifluoromethanesulfonic acid or gallium(III) trifluoromethanesulfonate catalyzed reactions give α-hydroxy α-trifluoromethyl phenyl acetic acid ethyl ester and its derivatives (analogs of Mosher's acid) in good yields for both highly activated hetero-aromatics and substituted benzenes