Journal
ORGANIC LETTERS
Volume 18, Issue 24, Pages 6464-6467Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.6b03355
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Funding
- National Natural Science Foundation of China [NSFC 21572272, NSFC21502232]
- Natural Science Foundation of Jiangsu Province [BK20140655]
- Foundation of State Key Laboratory of Natural Medicines [ZZYQ201605]
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A Rh(III)-catalyzed annulation between salicylaldehydes and diazo compounds with controllable chemoselectivity is described. AgNTf2 favored benzofurans via a tandem C-H activation/decarbonylation/annulation process, while AcOH led to chromones through a C-H activation/annulation pathway. The reaction exhibited good functional group tolerance and scalability. Moreover, only a single regioisomer of benzofuran was obtained due to the in situ decarbonylation orientation effect.
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