期刊
ASIAN JOURNAL OF ORGANIC CHEMISTRY
卷 7, 期 7, 页码 1362-1367出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ajoc.201800251
关键词
[4+2] annulation; benzamides; C-H activation; cobalt; heterobicyclic alkenes
资金
- Science and Engineering Research Board, India (SERB) [EMR/2015/002047]
- IIT Bombay
An efficient and convenient cobalt(III)-catalyzed highly diastereoselective strategy was demonstrated for the synthesis of epoxybenzophenanthridinone derivatives. The sp(2) C-H activation of N-methoxybenzamides and their annulation reaction with 7-oxa/aza benzonorbornadienes proceeds under mild conditions and exhibits excellent functional group tolerance. In addition, the products were transformed to biologically relevant phenanthridinones by an acid-catalyzed ring opening/aromatization sequence.
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