Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 82, Issue 21, Pages 11505-11511Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.7b02105
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Funding
- National Natural Science Foundation of China [21372102]
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A rhodium-catalyzed intermolecular coupling between arylnitrones and diazo compounds by CH activation/[4 + 1] annulation with a C(N-2)-C(acyl) bond cleavage is reported, and 2,3-disubstituted NH indoles are directly synthesized in up to a 94% yield. A variety of functional groups are applicable to this reaction to give the corresponding products with high selectivity. Compared to other previously reported Rh(III)-catalyzed synthesis of homologous series, this method is simpler, more general, and more efficient.
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