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Wang X, Yang C, Chen D, Chen P, Wang Y, Cao B, Qiao C, Szostak M. Synthesis of Functionalized Indoles by an Iridium-Catalyzed N-H Insertion Cascade: Nucleophilic Cyclization of Naphthylamines with α-Diazocarbonyl Compounds. J Org Chem 2024; 89:18291-18300. [PMID: 39606850 DOI: 10.1021/acs.joc.4c02132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2024]
Abstract
A novel iridium-catalyzed [3 + 2] annulation of naphthylamines and α-diazocarbonyl compounds was developed for the rapid assembly of densely functionalized indoles. This new catalytic process represents the first example of a cascade intramolecular nucleophilic cyclization by the N-H insertion of amines. Various naphthylamines and α-diazocarbonyl compounds could be obtained in high yields with excellent functional group tolerance. The reaction affords valuable indole derivatives, enabling expedient access to novel heterocyclic analogues not easily accessible by other methods.
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Affiliation(s)
- Xiaogang Wang
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean and Efficient Conversion and New Materials, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China
| | - Chi Yang
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean and Efficient Conversion and New Materials, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China
| | - Di Chen
- Institute of Basic Medical Sciences, Xi'an Medical University, Xi'an 710021, China
| | - Pu Chen
- AIE Research Center, Shaanxi Key Laboratory of Phytochemistry, College of Chemistry and Chemical Engineering, Baoji University of Arts and Science, Baoji 721013, China
| | - Yishou Wang
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean and Efficient Conversion and New Materials, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China
| | - Baoyue Cao
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean and Efficient Conversion and New Materials, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China
| | - Chengfang Qiao
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shaanxi Engineering Research Center for Mineral Resources Clean and Efficient Conversion and New Materials, College of Chemical Engineering and Modern Materials, Shangluo University, Shangluo 726000, China
| | - Michal Szostak
- Department of Chemistry, Rutgers University, 73 Warren Street, Newark, New Jersey 07102, United States
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