Copper-mediated N-Trifluoromethylation of O-Benzoylhydroxylamines

Fleetwood, Thomas D. and Kerr, William J. and Mason, Joseph (2024) Copper-mediated N-Trifluoromethylation of O-Benzoylhydroxylamines. Chemistry - A European Journal, 30 (6). e202303314. ISSN 0947-6539 (https://doi.org/10.1002/chem.202303314)

[thumbnail of Fleetwood-etal-CEJ-2023-Copper-mediated-N-Trifluoromethylation-of-O-Benzoylhydroxylamines]
Preview
Text. Filename: Fleetwood-etal-CEJ-2023-Copper-mediated-N-Trifluoromethylation-of-O-Benzoylhydroxylamines.pdf
Final Published Version
License: Creative Commons Attribution 4.0 logo

Download (6MB)| Preview

Abstract

The use of trifluoromethyl containing compounds is well established within medicinal chemistry, with a range of approved drugs containing C-CF3 and O-CF3 moieties. However, the utilisation of the N-CF3 functional group remains relatively unexplored. This may be attributed to the challenging synthesis of this unit, with many current methods employing harsh conditions or less accessible reagents. A robust methodology for the N-trifluoromethylation of secondary amines has been developed, which employs an umpolung strategy in the form of a copper-catalysed electrophilic amination. The method is operationally simple, uses mild, inexpensive reagents, and has been used to synthesise a range of novel, structurally complex N-CF3 containing compounds.