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Cao M, Wang H, Ma Y, Tung CH, Liu L. Site- and Enantioselective Manganese-Catalyzed Benzylic C-H Azidation of Indolines. J Am Chem Soc 2022; 144:15383-15390. [PMID: 35951549 DOI: 10.1021/jacs.2c07089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A manganese-catalyzed highly site- and enantioselective benzylic C-H azidation of indolines has been described. The practical method is applicable for azidation of a tertiary benzylic C-H bond with good functional group tolerance, allowing facile access to structurally diverse tertiary azide-containing indolines in high efficiency with excellent site-, chemo-, and enantioselectivity. The generality of the method was further demonstrated by site- and enantioselective azidation of the secondary benzylic C-H bond for a range of secondary azide-containing indolines. The benzylic C-H azidation method allows to straightforwardly and enantioselectively install a variety of nitrogen-based functional groups and diverse bioactive molecules at the C3 position of indoline frameworks through post-azidation manipulations. Gram-scale synthesis was also demonstrated, further highlighting the synthetic potential of the method. Mechanistic studies by combined experiments and computations elucidated the reaction mechanism and origins of stereoselectivity.
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Affiliation(s)
- Min Cao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Hongliang Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Yingang Ma
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Chen-Ho Tung
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Lei Liu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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Baenziger M, Baierl M, Devanathan K, Eswaran S, Fu P, Gschwend B, Haller M, Kasinathan G, Kovacic N, Langlois A, Li Y, Schuerch F, Shen X, Wan Y, Wickendick R, Xie S, Zhang K. Synthesis Development of the Selective Estrogen Receptor Degrader (SERD) LSZ102 from a Suzuki Coupling to a C–H Activation Strategy. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00076] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Markus Baenziger
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Marcel Baierl
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | | | - Sumesh Eswaran
- Anthem Biosciences Private Ltd., 49 Canara Bank Road, Bommasandra 560099, Karnataka, India
| | - Peng Fu
- Chemical & Analytical Development, Suzhou Novartis Technical Development Co. Ltd., 18-1 Tonglian Road, Bixi Subdistrict, Changshu 215537, Jiangsu, China
| | - Bjoern Gschwend
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Michael Haller
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Gopu Kasinathan
- Anthem Biosciences Private Ltd., 49 Canara Bank Road, Bommasandra 560099, Karnataka, India
| | - Nikola Kovacic
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Audrey Langlois
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Yongfeng Li
- Lianhe Chemical Technology Co. Ltd., 8 Yongjiao Road, Jiangkou Economic Zone, Huangyan, Taizhou 318020, Zhejiang, China
| | - Friedrich Schuerch
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Xiaodong Shen
- Chemical & Analytical Development, Suzhou Novartis Technical Development Co. Ltd., 18-1 Tonglian Road, Bixi Subdistrict, Changshu 215537, Jiangsu, China
| | - Yinbo Wan
- Chemical & Analytical Development, Suzhou Novartis Technical Development Co. Ltd., 18-1 Tonglian Road, Bixi Subdistrict, Changshu 215537, Jiangsu, China
| | - Regina Wickendick
- Chemical & Analytical Development, Novartis Pharma AG, 4056 Basel, Switzerland
| | - Siwei Xie
- Lianhe Chemical Technology Co. Ltd., 8 Yongjiao Road, Jiangkou Economic Zone, Huangyan, Taizhou 318020, Zhejiang, China
| | - Kai Zhang
- Lianhe Chemical Technology Co. Ltd., 8 Yongjiao Road, Jiangkou Economic Zone, Huangyan, Taizhou 318020, Zhejiang, China
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3
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Kobayashi K, Chikazawa Y, Nogi T. Synthesis of 2,3-Dihydrobenzo[b]thiophen-3-amine 1,1-Dioxide Derivatives via LDA-Mediated Cyclization of o-(Alkylsulfonyl)benzyl Azides with Denitrogenation. HETEROCYCLES 2017. [DOI: 10.3987/com-17-13743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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