期刊
ORGANIC CHEMISTRY FRONTIERS
卷 9, 期 16, 页码 4453-4459出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2qo00503d
关键词
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资金
- National Natural Science Foundation of China [21871044, 21472017]
A novel rhodium-catalyzed coupling-cyclization reaction between o-alkynyl/propargyl arylazides or o-azidoaryl acetylenic ketones and arylisocyanides has been developed. This reaction provides a new and simple strategy for the synthesis of 6H-indolo[2,3-b]quinolines, dibenzonaphthyridones, and dihydrodibenzo[b,g][1,8]-naphthyridines in a single step from readily available non-fused ring precursors, with only nitrogen generated as a by-product.
A novel rhodium-catalyzed coupling-cyclization of o-alkynyl/propargyl arylazides or o-azidoaryl acetylenic ketones with arylisocyanides has been developed. In this transformation, the reactive arylcarbodiimide intermediates generated via the coupling of o-alkynyl/propargyl arylazides or o-azidoaryl acetylenic ketones with arylisocyanides undergo intramolecular [4 + 2] cycloaddition which provides a new and simple strategy for the assembly of 6H-indolo[2,3-b]quinolines, dibenzonaphthyridones and dihydrodibenzo[b,g] [1,8]-naphthyridines in a single step from readily available non-fused ring precursors with only nitrogen as the by-product.
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