Cinchona Alkaloids/TMAF Combination-Catalyzed Nucleophilic Enantioselective Trifluoromethylation of Aryl Ketones
作者:Satoshi Mizuta、Norio Shibata、Surendar Akiti、Hiroyuki Fujimoto、Shuichi Nakamura、Takeshi Toru
DOI:10.1021/ol701791r
日期:2007.8.1
The catalytic, nucleophilic enantioselective trifluoromethylation reaction of both acyclic and cyclic aryl ketones using the Ruppert-Prakash reagent is now at hand, with an operationally simple procedure, based on the combination of ammonium bromide of cinchona alkaloids with TMAF. The procedure is reliable and general. Trifluoromethyl-substituted tetrasubstituted aryl alcohols have been synthesized
现在,基于金鸡纳生物碱的溴化铵与TMAF的结合,使用Ruppert-Prakash试剂可立即进行无环和环状芳基酮的催化亲核对映选择性三氟甲基化反应。该程序是可靠且通用的。三氟甲基取代的四取代的芳基醇的合成度高达94%ee。