Ir(III)-catalyzed quadruple C-H activation of N-arylimidazolium and diaryliodonium salts: facile access to polysubstituted imidazo[1,2-f]phenanthridiniums.
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DOI: 10.1039/d2cc01646j
Abstract: Herein, N-heterocyclic carbene-directed Ir(III)-catalyzed cascade C-H arylation/annulation of N-arylimidazolium with diaryliodonium salts has been accomplished for the first time via a quadruple C-H activation strategy to construct imidazo[1,2-f]phenanthridinium structures. This protocol overcomes the compatibility of… read more here.
Keywords: quadruple activation; imidazo phenanthridiniums; polysubstituted imidazo; diaryliodonium salts ... See more keywords
Copper-catalyzed three-component reaction to synthesize polysubstituted imidazo[1,2-a]pyridines
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DOI: 10.1039/d2ra02722d
Abstract: An efficient three-component one-pot and operationally simple cascade of 2-aminopyridines with sulfonyl azides and terminal ynones is reported, providing a variety of polysubstituted imidazo[1,2-a]pyridine derivatives in moderate to excellent yields. In particular, the reaction goes… read more here.
Keywords: reaction; polysubstituted imidazo; catalyzed three; three component ... See more keywords