Photoredox Activation of SF<sub>6</sub>for Fluorination
作者:T. Andrew McTeague、Timothy F. Jamison
DOI:10.1002/anie.201608792
日期:2016.11.21
We report the first practical use of SF6 as a fluorinating reagent in organic synthesis. Photoredoxcatalysis enables the in situ conversion of SF6, an inert gas, into an active fluorinating species by using visiblelight. Under these conditions, deoxyfluorination of allylic alcohols is effected with high chemoselectivity and is tolerant of a wide range of functional groups. Application of the methodology
Regio- and Stereoselective Allylic Trifluoromethylation and Fluorination using CuCF<sub>3</sub> and CuF Reagents
作者:Johanna M. Larsson、Stalin R. Pathipati、Kálmán J. Szabó
DOI:10.1021/jo4010074
日期:2013.7.19
Copper-mediated trifluoromethylation of allylic chlorides and trifluoroacetates was performed using a convenient Cu–CF3 reagent. The reaction is suitable for selective synthesis of allyl trifluoromethyl species. Mechanistic studies indicate that the reaction proceeds via a nucleophilic substitution mechanism involving allyl copper intermediates. The analogous Cu–F reagent was suitable for fluorination