Selective Anti-Markovnikov Cyclization and Hydrofluorination Reaction in Superacid HF/SbF<sub>5</sub>: A Tool in the Design of Nitrogen-Containing (Fluorinated) Polycyclic Systems
The selective synthesis of tetrahydroquinolines and fluorinated arylamines was performed in superacid HF/SbF5 through a superelectrophilic ammonium-carbenium activation process. This anti-Markovnikov oriented reaction was applied to the straightforward synthesis of highly valued (fluorinated) nitrogen-containing heterocyclic compounds.
Tandem superelectrophilic activation for the regioselective chlorofluorination of recalcitrant allylic amines
作者:Alexandre Le Darz、Ugo Castelli、Naima Mokhtari、Agnès Martin-Mingot、Jérôme Marrot、Fodil Bouazza、Omar Karam、Sébastien Thibaudeau
DOI:10.1016/j.tet.2015.12.013
日期:2016.2
An efficient and straightforward regio-controlled route to beta-fluoro-gamma-chlorinated amines was developed via an ammonium-chloronium superelectrophilic activation in superacid HF/SbF5. Through halogen directing effect the method was extended to a variety of (poly)halofluorinated building blocks amenable for further synthetic modifications. The direct synthesis of chlorofluorinated analogues of bioactive compounds via this process confirmed the ability to use this strategy for further applications in medicinal chemistry. (C) 2015 Elsevier Ltd. All rights reserved.