期刊
ORGANIC LETTERS
卷 21, 期 16, 页码 6437-6441出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.9b02336
关键词
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资金
- National Natural Science Foundation of China [21202040]
- China Postdoctoral Science Foundation [201ST80771]
- Henan Science and Technology Research Project [192102310296]
- Plan for Scientific Innovation Talents of Henan Province [184200510012]
- 111 Project [D17007]
Rhodium-catalyzed substrate-tunable oxidative annulation and spiroannulation reactions of 2-arylindoles with benzoquinone leading to 9H-dibenzo[a,c]carbazol-3-ols and new spirocyclic products are reported. Intriguingly, with 2-arylsubstituted indoles, benzoquinone could act as a C2 synthon to afford dibenzo[a,c]carbazoles. On the contrary, when 2-aryl-3-substituted indoles were used, benzoquinone switched to act as a C1 synthon to furnish spirocyclic compounds. In addition, further transformations of the obtained products demonstrate the synthetic utility of the present protocol.
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