Journal
ORGANIC LETTERS
Volume 21, Issue 10, Pages 3687-3691Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.9b01138
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Funding
- National Natural Science Foundation of China [21871226, 21572194]
- Collaborative Innovation Center of New Chemical Technologies for Environmental Benignity and Efficient Resource Utilization
- Hunan Provincial Innovative Foundation for Postgraduate [CX2018B362]
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A metal-free strategy for the synthesis of benzocarbazoles from 2-arylindoles and aryl ketones is developed. Various 2-aryl-3-vinyl-indoles were generated in situ through dehydrative condensation of aryl ketones and indoles. These key intermediates could be selectively converted into the corresponding benzo[a]carbazoles via a direct cyclization process between two Csp(2)-H bonds. Furthermore, terminal alkynes also could be used as the versatile C2 source to afford the corresponding products in good yields.
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