Catalytic aerobic oxidative decarboxylation of α-trifluoromethyl-α-hydroxy acids to trifluoromethyl ketones
摘要:
The oxidative decarboxylation of alpha-trifluoromethyl-alpha-hydroxy acids to trifluoromethyl ketones is carried out under mild catalytic aerobic conditions using a cobalt(Ill) complex in the presence of pivalaldehyde. (C) 2002 Elsevier Science Ltd. All rights reserved.
Catalytic aerobic oxidative decarboxylation of α-trifluoromethyl-α-hydroxy acids to trifluoromethyl ketones
摘要:
The oxidative decarboxylation of alpha-trifluoromethyl-alpha-hydroxy acids to trifluoromethyl ketones is carried out under mild catalytic aerobic conditions using a cobalt(Ill) complex in the presence of pivalaldehyde. (C) 2002 Elsevier Science Ltd. All rights reserved.
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