Photoredox Catalysis: A Mild, Operationally Simple Approach to the Synthesis of α-Trifluoromethyl Carbonyl Compounds
作者:Phong V. Pham、David A. Nagib、David W. C. MacMillan
DOI:10.1002/anie.201101861
日期:2011.6.27
A facile and efficient method for the α‐trifluoromethylation of carbonylcompounds and enolsilanes has been accomplished through application of a photoredox catalysis strategy. A one‐flask procedure for the direct α‐trifluoromethylation and α‐perfluoroalkylation of ketone, amide, and ester substrates as well as silylketene acetals is described (see scheme).
Radical Desulfur‐Fragmentation and Reconstruction of Enol Triflates: Facile Access to α‐Trifluoromethyl Ketones
作者:Xiaolong Su、Honggui Huang、Yaofeng Yuan、Yi Li
DOI:10.1002/anie.201608507
日期:2017.1.24
efficient oxidative radical desulfur‐fragmentation and reconstruction of enoltriflates for the synthesis of α‐CF3 ketones. Preliminary mechanistic studies disclosed that oxidative fragmentation to release a CF3 radical from the triflyl group of enoltriflate and subsequent addition of the CF3 radical to another enoltriflate form the desired α‐CF3 ketones. This method provides a new approach to α‐CF3