Multi-site cyclization via initial C-H activation using a rhodium(III) catalyst: rapid assembly of frameworks containing indoles and indolines.

CHEMICAL COMMUNICATIONS(2015)

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Abstract
Tandem multi-site cyclization triggered by Rh(III)-catalyzed C-H activation has been achieved for highly efficient synthesis of spirocycle indolin-3-one (C2-cyclization), benzo[a] carbazole (C3-cyclization) and an unusual indoxyl core (N1-cyclization). In particular, the synthesis of pseudo-indoxyl is typically completed within 10 min, and the reaction tolerates air, water and a range of solvents.
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Key words
catalyst,cheminform abstract,indolines,indoles,multi-site
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