Rh(III)-Catalyzed Intermolecular C–H Amination
of 1‑Aryl‑1<i>H</i>‑pyrazol-5(4<i>H</i>)‑ones with Alkylamines
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Abstract
An
intermolecular C–H amination of 1-aryl-1<i>H</i>-pyrazol-5(4<i>H</i>)-ones was achieved under mild reaction
conditions, using a low catalyst loading and with a broad scope of
aminating reagents. This protocol not only provides the first example
of rhodium(III)-catalyzed intermolecular aromatic C–H amination
directed by an intrinsic functionality of the substrate/product but
also features aminating an existing drug with either primary or secondary <i>N</i>-benzoate alkylamines as the coupling partners