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Deoxytrifluoromethylation/aromatization of cyclohexan(en)ones to access highly substituted trifluoromethyl arenes.

Pankaj BhattaraiMohammed K Abd El-GaberSuvajit KoleyRyan A Altman
Published in: Nature communications (2024)
Trifluoromethyl arenes (Ar-CF 3 ) are amongst the commonly encountered fluorinated substructures in pharmaceutical, agrochemical, and material sciences. However, predominant methods to access Ar-CF 3 possess several limitations, including harsh conditions, lack of availability of substrates, and poor regioselectivity, which combined restrict access to desirable highly functionalized Ar-CF 3 -containing compounds. To expand the scope of accessible Ar-CF 3 -based molecules, we present an orthogonal deoxyfluoroalkylation/aromatization approach that exploits readily accessible and programable cyclohexan(en)one substrates, which undergo a reliable 1,2-addition reaction with the Ruppert-Prakash reagent (TMSCF 3 ) followed by aromatization to deliver highly functionalized Ar-CF 3 compounds in a one/two-pot sequence. This general strategy enables access to highly substituted Ar-CF 3 -containing molecules that are difficult, expensive, and/or impossible to access by current synthetic methods.
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