Ruthenium(II)-Catalyzed Oxidative Double C–HActivation and Annulation Reaction: Synthesis of Indolo[2,1‑ a ]isoquinolines
2019
The first metal-catalyzed double aryl C(sp2)–H bond activation of antipyrine and alkyne annulation reaction is reported. This Ru(II)-catalyzed reaction was accomplished in the presence of 20 mol % phosphine ligand tricyclohexylphosphine tetrafluoroborate to afford indolo[2,1-a]isoquinolines that are very important compounds because of their bioactivity and interesting optical properties.
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