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- W2331468909 endingPage "5431" @default.
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- W2331468909 abstract "A unique synthetic utility of a Cp*CoIII catalyst in comparison with related Cp*RhIII catalysts is described. A C2-selective indole alkenylation/annulation sequence proceeded smoothly with catalytic amount of a [Cp*CoIII(C6H6)](PF6)2 complex and KOAc. Intramolecular addition of an alkenyl-Cp*Co species to a carbamoyl moiety gave pyrroloindolones in 58–89% yield in one pot. Clear difference was observed between the catalytic activity of the Cp*CoIII complex and those of Cp*RhIII complexes, highlighting the unique nucleophilic activity of the organocobalt species. The Cp*CoIII catalysis was also suitable for simple alkenylation process of N-carbamoyl indoles, and broad range of alkynes, including terminal alkynes, were applicable to give C2-alkenylated indoles in 50–99% yield. Mechanistic studies on C–H activation step under Cp*CoIII catalysis with the aid of an acetate unit as well as evaluation of the difference between organo-CoIII species and organo-RhIII species are also described." @default.
- W2331468909 created "2016-06-24" @default.
- W2331468909 creator A5012058996 @default.
- W2331468909 creator A5017998169 @default.
- W2331468909 creator A5023959517 @default.
- W2331468909 creator A5039224020 @default.
- W2331468909 creator A5088288669 @default.
- W2331468909 date "2014-03-31" @default.
- W2331468909 modified "2023-10-18" @default.
- W2331468909 title "Pyrroloindolone Synthesis via a Cp*Co<sup>III</sup>-Catalyzed Redox-Neutral Directed C–H Alkenylation/Annulation Sequence" @default.
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