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Zhang T, Zhang C, Lu X, Peng C, Zhang Y, Zhu X, Zhong G, Zhang J. Synthesis of silyl indenes by ruthenium-catalyzed aldehyde- and acylsilane-enabled C-H alkylation/cyclization. Org Biomol Chem 2024; 22:466-471. [PMID: 38099332 DOI: 10.1039/d3ob01699d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
A ruthenium-catalyzed C-H alkylation/cyclization sequence is presented to prepare silyl indenes with atom and step-economy. This domino reaction is triggered by acyl silane-directed C-H activation, and an aldehyde controlled the following enol cyclization/condensation other than β-H elimination. The protocol tolerates a broad substitution pattern, and the further synthetic elaboration of silyl indenes allows access to a diverse range of interesting indene and indanone derivatives.
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Affiliation(s)
- Tao Zhang
- School of Engineering, China Pharmaceutical University, No. 24, Tongjiaxiang, Nanjing 210009, Jiangsu, China.
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
| | - Cheng Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
| | - Xiunan Lu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
| | - Chengxing Peng
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
| | - Yawei Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
| | - Xiong Zhu
- School of Engineering, China Pharmaceutical University, No. 24, Tongjiaxiang, Nanjing 210009, Jiangsu, China.
| | - Guofu Zhong
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
- Department of Chemistry, Eastern Institute for Advanced Study, Ningbo 315200, Zhejiang, China.
| | - Jian Zhang
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 Zhejiang, China.
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Lai EY, Yuan B, Ackermann L, Johansson MJ. Ruthenium-Catalyzed Aminocarbonylation with Isocyanates Through Weak Coordinating Groups. Chemistry 2023; 29:e202302023. [PMID: 37737512 DOI: 10.1002/chem.202302023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Indexed: 09/23/2023]
Abstract
Introducing amide functional groups under mild conditions has growing importance owing to the prevalence of such moiety in biologically active molecules. Herein, we disclose a mild protocol for the directed ruthenium-catalyzed C-H aminocarbonylation with isocyanates as the amidating agents developed through high-throughput experimentation (HTE). The redox-neutral and base-free reaction is guided by weakly Lewis basic functional groups, including anilides, lactams and carbamates to access anthranilamide derivatives. The synthetic utility of this transformation is reflected by large-scale synthesis and late-stage functionalization.
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Affiliation(s)
- Elisa Y Lai
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden1, 431 50, Mölndal, Sweden
- Institut für Organische und Biomolekulare Chemie and, Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Binbin Yuan
- Institut für Organische und Biomolekulare Chemie and, Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie and, Wöhler Research Institute for Sustainable Chemistry (WISCh), Georg-August-Universität Göttingen, Tammannstraße 2, 37077, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Potsdamer Strasse 58, 10785, Berlin, Germany
| | - Magnus J Johansson
- Medicinal Chemistry, Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), Biopharmaceuticals R&D, AstraZeneca, Gothenburg, Pepparedsleden1, 431 50, Mölndal, Sweden
- Department of Organic Chemistry, Stockholm University, 106 91, Stockholm, Sweden
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Atkin L, Ross HJ, Priebbenow DL. Acylsilanes in Transition-Metal-Catalyzed and Photochemical Reactions: Clarifying Product Formation. J Org Chem 2023; 88:14205-14209. [PMID: 37738455 DOI: 10.1021/acs.joc.3c01454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Acylsilanes are able to react as nucleophilic carbene precursors, electrophiles, and directing groups in C-H functionalization. To date, some of the products reportedly formed during transition-metal-catalyzed and photochemical reactions involving acylsilanes have been incorrectly assigned. To provide clarity, we herein address these structural misassignments and detail the revised structures. New insights into the reactivity of acylsilanes were also afforded via the discovery that light-induced siloxy carbenes participate in intramolecular 1,2-carbonyl addition to proximal esters.
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Affiliation(s)
- Liselle Atkin
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Hannah J Ross
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Daniel L Priebbenow
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
- School of Chemistry, University of Melbourne, Parkville, Victoria 3010, Australia
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Noji M, Ishimaru S, Obata H, Kumaki A, Seki T, Hayashi S, Takanami T. Facile electrochemical synthesis of silyl acetals: An air-stable precursor to formylsilane. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Atkin L, Priebbenow DL. Cobalt-catalysed acyl silane directed ortho C–H functionalisation of benzoyl silanes. Chem Commun (Camb) 2022; 58:12604-12607. [DOI: 10.1039/d2cc05350k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acyl silanes can be engaged as weakly coordinating directing groups in cobalt catalysed C–H functionalisation reactions to prepare benzoyl silanes that are highly amenable to subsequent synthetic manipulations yet inaccessible via existing methods.
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Affiliation(s)
- Liselle Atkin
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, 3052, Victoria, Australia
| | - Daniel L. Priebbenow
- Department of Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, 3052, Victoria, Australia
- School of Chemistry, University of Melbourne, Parkville, 3010, Victoria, Australia
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