1
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Deng KZ, Sukowski V, Fernández-Ibáñez MÁ. Non-Directed C-H Arylation of Anisole Derivatives via Pd/S,O-Ligand Catalysis. Angew Chem Int Ed Engl 2024; 63:e202400689. [PMID: 38401127 DOI: 10.1002/anie.202400689] [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: 01/10/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/26/2024]
Abstract
Non-directed C-H arylation is one of the most efficient methods to synthesize biaryl compounds without the need of the prefuctionalization of starting materials, or the installment and removal of directing groups on the substrate. A direct C-H arylation of simple arenes as limiting reactants remains a challenge. Here we disclose a non-directed C-H arylation of anisole derivatives as limiting reagents with aryl iodides under mild reaction conditions. The arylated products are obtained in synthetically useful yields and the arylation of bioactive molecules is also demonstrated. Key to the success of this methodology is the use of a one-step synthesized S,O-ligand.
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Affiliation(s)
- Ke-Zuan Deng
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - Verena Sukowski
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
| | - M Ángeles Fernández-Ibáñez
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH, Amsterdam, The Netherlands
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2
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Li X, Liu J, Song R, Luo X, Luo H. Rhodium(III)-Catalyzed Switchable β-C(sp 2)-H Alkenylation and Alkylation of Acyclic Enamides with Allyl Alcohols. Org Lett 2024; 26:3673-3678. [PMID: 38639408 DOI: 10.1021/acs.orglett.4c01234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
Herein, rhodium(III)-catalyzed β-C(sp2)-H alkenylation and alkylation of enamides are presented using readily accessible allylic alcohols by switching the reaction conditions. This tunable transformation has been applied to a wide range of substrates and typically proceeded with excellent regioselectivity and stereoselectivity as well as with good functional group tolerance. The catalytic system offers an efficient approach for synthesizing various functionalized enamides bearing N-(2Z,4E)-butadiene and (Z)-β-C(sp2)-H alkylated enamides. In addition, mechanistic experiments suggest that Rh(III)-catalyzed C-H activation is not related to the critical step.
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Affiliation(s)
- Xiaolan Li
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Jie Liu
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Ruixin Song
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Xuzhong Luo
- College of Chemistry, Nanchang University, Nanchang, Jiangxi 330031, China
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
| | - Haiqing Luo
- Department of Chemistry & Chemical Engineering, Gannan Normal University, Ganzhou 341000, China
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3
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Požgan F, Grošelj U, Svete J, Štefane B, Al Mamari HH. Recent Advances in the Nickel-Catalyzed Alkylation of C-H Bonds. Molecules 2024; 29:1917. [PMID: 38731408 PMCID: PMC11085484 DOI: 10.3390/molecules29091917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
Functionalization of C-H bonds has emerged as a powerful strategy for converting inert, nonfunctional C-H bonds into their reactive counterparts. A wide range of C-H bond functionalization reactions has become possible by the catalysis of metals, typically from the second row of transition metals. First-row transition metals can also catalyze C-H functionalization, and they have the merits of greater earth-abundance, lower cost and better environmental friendliness in comparison to their second-row counterparts. C-H bond alkylation is a particularly important C-H functionalization reaction due to its chemical significance and its applications in natural product synthesis. This review covers Ni-catalyzed C-H bond alkylation reactions using alkyl halides and olefins as alkyl sources.
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Affiliation(s)
- Franc Požgan
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Uroš Grošelj
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Jurij Svete
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Bogdan Štefane
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia; (F.P.); (U.G.); (J.S.); (B.Š.)
| | - Hamad H. Al Mamari
- Department of Chemistry, College of Science, Sultan Qaboos University, Muscat 123, Oman
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4
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Balaso Mohite S, Kousin Mirza Y, Kumar V, Partap S, Baji Baba S, Alake J, Bera M, Karpoormath R. Palladium-Catalyzed C-H Olefination of Imidazo[1,2a] pyridine Carboxamide in Aqueous Ethanol under Oxygen. Chemistry 2024; 30:e202304239. [PMID: 38317443 DOI: 10.1002/chem.202304239] [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: 12/19/2023] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 02/07/2024]
Abstract
The advancement of sustainable chemistry and changes in the economy are strongly intertwined. Reaction time, cost savings, moderate temperatures, and generation of the fewest byproducts are frequently achieved by using catalytic processes. Herein, we report the C-H olefination of imidazo[1,2a] pyridine carboxamides with various acrylates in the presence of Pd (OAc)2 with O2 as the oxidant in aqueous ethanol rather than using non-ecofriendly solvents. The C-H activation features most user-friendly reaction conditions, excellent yield as well as plenty substrate scope and applicable for C-H deuteriation of the corresponding heteroarenes with D2O. Experimental mechanistic studies indicate that C-H activation step succeeded after formation of tetra coordinated square planer Pd-substrate adduct.
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Affiliation(s)
- Sachin Balaso Mohite
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, 4000, South Africa
| | - Yafia Kousin Mirza
- Photocatalysis & Synthetic Methodology Lab (PSML), Amity Institute of Click Chemistry Research & Studies (AICCRS), Amity University, Noida, 201303, India
| | - Vishal Kumar
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, 4000, South Africa
| | - Sangh Partap
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, 4000, South Africa
| | - Shaik Baji Baba
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, 4000, South Africa
| | - John Alake
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, 4000, South Africa
| | - Milan Bera
- Photocatalysis & Synthetic Methodology Lab (PSML), Amity Institute of Click Chemistry Research & Studies (AICCRS), Amity University, Noida, 201303, India
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal (Westville), Durban, 4000, South Africa
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5
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Zhang Y, Zhang JJ, Lou L, Lin R, Cramer N, Wang SG, Chen Z. Recent advances in Rh(I)-catalyzed enantioselective C-H functionalization. Chem Soc Rev 2024; 53:3457-3484. [PMID: 38411467 DOI: 10.1039/d3cs00762f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Chiral carbon-carbon (C-C) and carbon-heteroatom (C-X) bonds are pervasive and very essential in natural products, bioactive molecules, and functional materials, and their catalytic construction has emerged as one of the hottest research fields in synthetic organic chemistry. The last decade has witnessed vigorous progress in Rh(I)-catalyzed asymmetric C-H functionalization as a complement to Rh(II) and Rh(III) catalysis. This review aims to provide the most comprehensive and up-to-date summary covering the recent advances in Rh(I)-catalyzed C-H activation for asymmetric functionalization. In addition to the development of diverse reactions, chiral ligand design and mechanistic investigation (inner-sphere mechanism, outer-sphere mechanism, and 1,4-Rh migration) will also be highlighted.
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Affiliation(s)
- Yue Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, Jiangsu, China.
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen), Nanjing 210014, Jiangsu, China
| | - Jing-Jing Zhang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, Jiangsu, China.
| | - Lujun Lou
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, Jiangsu, China.
| | - Ruofan Lin
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, Jiangsu, China.
| | - Nicolai Cramer
- Institute of Chemical Sciences and Engineering (ISIC), EPFL SB ISIC LCSA, BCH 4305, 1015 Lausanne, Switzerland.
| | - Shou-Guo Wang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China.
| | - Zhen Chen
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass, Jiangsu Key Lab of Biomass-Based Green Fuels and Chemicals, International Innovation Center for Forest Chemicals and Materials, Nanjing Forestry University, Nanjing 210037, Jiangsu, China.
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6
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He X, Liu K, Yan S, Wang Y, Jiang Y, Zhang X, Fan X. Synthesis of 1,7-Fused Indolines Tethered with Spiroindolinone Based on C-H Activation Strategy with Air as a Sustainable Oxidant. J Org Chem 2024; 89:1880-1897. [PMID: 38252142 DOI: 10.1021/acs.joc.3c02630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
Herein, we present an efficient synthesis of 1,7-fused indolines tethered with a spiroindolinonyl moiety through the cascade reaction of indolin-1-yl(aryl)methanimines with diazo oxindoles. To the best of our knowledge, this is the first example in which 1,7-fused indoline skeleton was constructed along with the simultaneous introduction of a spiro element initiated by the C-H bond activation of indoline. In forming the title product, the indoline substrate and the diazo coupling partner demonstrated an unprecedented reaction pattern in which the latter acts as a C1 synthon to participate in the construction of the spirocyclic scaffold through the reductive elimination of a key seven-membered Ru(II) species by using air as an effective and sustainable oxidant to regenerate the active catalyst. Moreover, studies on the cytotoxicity of selected products against several human cancer cell lines demonstrated their potential as lead compounds for the development of anticancer drugs. With notable features such as simple and economical substrates, pharmaceutically valuable products with sophisticated spirocyclic skeleton, mild reaction conditions, cost-free and sustainable oxidants, high efficiency, excellent compatibility with diverse functional groups, and scalability, this method is expected to find wide applications in related areas.
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Affiliation(s)
- Xing He
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Kangli Liu
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Shengnan Yan
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yue Wang
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuqin Jiang
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- State Key Laboratory of Antiviral Drugs, Pingyuan Laboratory, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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7
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Cui PC, Wang GW. Visible-Light-Mediated Bimetal-Catalyzed meta-Alkylation of Arenes. Org Lett 2024. [PMID: 38190630 DOI: 10.1021/acs.orglett.3c03266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
A mild approach to the visible-light-mediated bimetal-catalyzed meta-alkylation of arenes has been accomplished. The regioselective meta-alkylation is realized by a bimetallic ruthenium-palladium system. Ruthenium acts as a catalyst for the directing effect and as a photosensitizer, while the cocatalyst palladium behaves as a catalyst for the generation of fluoroalkyl radicals. This reaction not only is suitable for two-component meta-fluoroalkylation of arenes but can also be extended to three-component reactions to achieve bifunctionalization of olefins.
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Affiliation(s)
- Peng-Cheng Cui
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Guan-Wu Wang
- Hefei National Research Center for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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8
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Nipate DS, Meena N, Swami PN, Rangan K, Kumar A. Rh(III)-catalyzed oxidative [4+2] annulation of 2-arylquinoxalines and 2-aryl-2 H-indazoles with allyl alcohols. Chem Commun (Camb) 2024; 60:344-347. [PMID: 38078491 DOI: 10.1039/d3cc04600a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
Synthesis of functionalized benzo[a]phenazines and indazolo[2,3-a]quinolines has been developed through Rh(III)-catalyzed oxidative annulation of 2-arylquinoxalines and 2-aryl-2H-indazoles with allyl alcohols, respectively. The method features a broad substrate scope, excellent functional group tolerance, good to high yields of annulated products, and scaled-up synthesis capability. Based on a preliminary mechanistic investigation, a tentative mechanism of annulation reaction has been proposed.
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Affiliation(s)
- Dhananjay S Nipate
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Prakash N Swami
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana, 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Rajasthan, 333031, India.
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9
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de Jesus R, Hiesinger K, van Gemmeren M. Preparative Scale Applications of C-H Activation in Medicinal Chemistry. Angew Chem Int Ed Engl 2023; 62:e202306659. [PMID: 37283078 DOI: 10.1002/anie.202306659] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/08/2023]
Abstract
C-H activation is an attractive methodology to increase molecular complexity without requiring substrate prefunctionalization. In contrast to well-established cross-coupling methods, C-H activation is less explored on large scales and its use in the production of pharmaceuticals faces substantial hurdles. However, the inherent advantages, such as shorter synthetic routes and simpler starting materials, motivate medicinal chemists and process chemists to overcome these challenges, and exploit C-H activation steps for the synthesis of pharmaceutically relevant compounds. In this review, we will cover examples of drugs/drug candidates where C-H activation has been implemented on a preparative synthetic scale (range between 355 mg and 130 kg). The optimization processes will be described, and each example will be examined in terms of its advantages and disadvantages, providing the reader with an in-depth understanding of the challenges and potential of C-H activation methodologies in the production of pharmaceuticals.
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Affiliation(s)
- Rita de Jesus
- Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24118, Kiel, Germany
| | - Kerstin Hiesinger
- Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24118, Kiel, Germany
| | - Manuel van Gemmeren
- Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität zu Kiel, Otto-Hahn-Platz 4, 24118, Kiel, Germany
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10
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Zhang J, Xu W, Zhuang W, Chen X, Zhang X, Huang Q. Rhodaelectro-Catalyzed Decarboxylative Cross-Dehydrogenative Coupling of Indole-3-carboxylic Acids and Olefins via Weakly Coordinating Carboxyl Groups. J Org Chem 2023; 88:15198-15208. [PMID: 37863844 DOI: 10.1021/acs.joc.3c01690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
A rhodaelectro-catalyzed C2-H selectively decarboxylative alkenylation of 3-carboxy-1H-indoles employing electricity as the traceless terminal oxidant has been accomplished. The weakly coordinating carboxyl group serves as the traceless directing groups. External oxidant-free in an undivided cell with constant current in aqueous solution ensures the decarboxylative C-H alkenylation to be viable and sustainable.
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Affiliation(s)
- Jiaqi Zhang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Weijie Xu
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Weihui Zhuang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Ximan Chen
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
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11
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Vijaya Sankar R, Mathew A, Pradhan S, Kuniyil R, Gunanathan C. Ruthenium-Catalyzed Selective α-Alkylation of β-Naphthols using Primary Alcohols: Elucidating the Influence of Base and Water. Chemistry 2023; 29:e202302102. [PMID: 37486957 DOI: 10.1002/chem.202302102] [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: 07/02/2023] [Revised: 07/13/2023] [Accepted: 07/24/2023] [Indexed: 07/26/2023]
Abstract
Functionalized arenes and arenols have diverse applications in chemical synthesis and material chemistry. Selective functionalization of arenols is a topic of prime interest. In particular, direct alkylation of arenols using alcohols is a challenging task. In this report, a ruthenium pincer catalyzed direct α-alkylation of β-naphthol using primary alcohols as alkylating reagents is reported. Notably, aryl and heteroaryl methanols and linear and branched aliphatic alcohols underwent selective alkylation reactions, in which water is the only byproduct. Notably, catalytically derived α-alkyl-β-naphthol products displayed high absorbance, emissive properties, and quantum yields (up to 93.2 %). Dearomative bromination on α-alkyl-β-naphthol is demonstrated as a synthetic application. Mechanistic studies indicate that the reaction involves an aldehyde intermediate. DFT studies support this finding and further reveal that a stoichiometric amount of base is required to make the aldol condensation as well as elementary steps required for regeneration of catalytically active species. In situ-generated water molecule from the aldol condensation reaction plays an important role in the regeneration of an active catalyst.
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Affiliation(s)
- Raman Vijaya Sankar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, 752050, India
| | - Abra Mathew
- Department of Chemistry, Indian Institute of Technology Palakkad (IIT Palakkad), Kerala, 678623, India
| | - Subham Pradhan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, 752050, India
| | - Rositha Kuniyil
- Department of Chemistry, Indian Institute of Technology Palakkad (IIT Palakkad), Kerala, 678623, India
| | - Chidambaram Gunanathan
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, Bhubaneswar, 752050, India
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12
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Wei QY, Zhou Z, Yao ML, Liu JK, Wu B, Yang JM. Rhodium(III)-catalyzed intermolecular [3+3] annulation of benzoxazines with quinone compounds: access to spiro-heterocyclic scaffolds. Chem Commun (Camb) 2023; 59:11520-11523. [PMID: 37671924 DOI: 10.1039/d3cc03609j] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
A rhodium(III)-catalyzed redox-neutral spiroannulation approach to access the spiro[benzo[b][1,4]oxazine-benzo[c]chromene skeleton is described in this contribution. A variety of spiro[5.5]-heterocyclic scaffolds were obtained in moderate to excellent yields under mild conditions. Key features of this protocol are good substrate scope, silver-free conditions, low catalyst loadings, easy handling under air and 100% atom economy. Furthermore, scale-up reactions and late-stage derivatizations highlight the potential synthetic utility of this methodology.
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Affiliation(s)
- Qing-Yi Wei
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China.
| | - Ze Zhou
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China.
| | - Meng-Lian Yao
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China.
| | - Ji-Kai Liu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China.
| | - Bin Wu
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China.
| | - Jin-Ming Yang
- School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, People's Republic of China.
- College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang 443002, People's Republic of China
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13
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Liu LY, Fan Z, Hoque ME, Qian S, Meng G, Chekshin N, Tanaka K, Qiao JX, Yeung KS, Yu JQ. Remote C-H Olefination of Heterocyclic Biaryls Enabled by Reversibly Bound Templates. Angew Chem Int Ed Engl 2023; 62:e202307581. [PMID: 37470111 PMCID: PMC10552871 DOI: 10.1002/anie.202307581] [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: 05/30/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/21/2023]
Abstract
Remote C-H functionalization of heterocyclic biaryls will be of great importance in synthesis and medicinal chemistry. Through adjusting the geometric relationship of the directing atom and target C-H bonds, two new catalytic templates have been developed to enable the functionalization of the more hindered ortho-C-H bonds of heterobiaryls bearing directing heteroatom at the meta- or para-positions, affording unprecedented site-selectivity. The use of template chaperone also overcomes product inhibition and renders the directing templates catalytic. The utility of this protocol was demonstrated by olefination of heterocyclic biaryls with various substituents, overriding conventional steric and electronic effects. These ortho-C-H olefinated heterobiaryls are sterically hindered and can often be challenging to prepare through aryl-aryl coupling reactions.
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Affiliation(s)
- Luo-Yan Liu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Zhoulong Fan
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Md Emdadul Hoque
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Shaoqun Qian
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Guangrong Meng
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Nikita Chekshin
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Keita Tanaka
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Jennifer X Qiao
- Discovery Chemistry, Bristol-Myers Squibb Company, P.O. Box 4000, Princeton, NJ, 08543, USA
| | - Kap-Sun Yeung
- Discovery Chemistry, Bristol-Myers Squibb Research and Development, 100 Binney Street, Cambridge, MA, 02142, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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14
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Al Mamari HH, Borel J, Hickey A, Courtney E, Merz J, Zhang X, Friedrich A, Marder TB, McGlacken GP. Regioselective Iridium-Catalyzed C8-H Borylation of 4-Quinolones via Transient O-Borylated Quinolines. Chemistry 2023; 29:e202301734. [PMID: 37280155 DOI: 10.1002/chem.202301734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 06/08/2023]
Abstract
The quinolone-quinoline tautomerization is harnessed to effect the regioselective C8-borylation of biologically important 4-quinolones by using [Ir(OMe)(cod)]2 as the catalyst precursor, the silica-supported monodentate phosphine Si-SMAP as the ligand, and B2 pin2 as the boron source. Initially, O-borylation of the quinoline tautomer takes place. Critically, the newly formed 4-(pinBO)-quinolines then undergo N-directed selective Ir-catalyzed borylation at C8. Hydrolysis of the OBpin moiety on workup returns the system to the quinolone tautomer. The C8-borylated quinolines were converted to their corresponding potassium trifluoroborate (BF3 K) salts and to their C8-chlorinated quinolone derivatives. The two-step C-H borylation-chlorination reaction sequence resulted in various C8-Cl quinolones in good yields. Conversion to C8-OH-, C8-NH2 -, and C8-Ar-substituted quinolones was also feasible by using this methodology.
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Affiliation(s)
- Hamad H Al Mamari
- Department of Chemistry, College of Science, Sultan Qaboos University, PO Box 36, Al Khoudh 123, Muscat, Sultanate of Oman
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Julie Borel
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Aobha Hickey
- School of Chemistry & Analytical and, Biological Chemistry Research Facility, University College Cork, T12 YN60, Ireland
| | - Eimear Courtney
- School of Chemistry & Analytical and, Biological Chemistry Research Facility, University College Cork, T12 YN60, Ireland
| | - Julia Merz
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Xiaolei Zhang
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Todd B Marder
- Institut für Anorganische Chemie and, Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Gerard P McGlacken
- School of Chemistry & Analytical and, Biological Chemistry Research Facility, University College Cork, T12 YN60, Ireland
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15
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Singh Chauhan AN, Mali G, Dua G, Samant P, Kumar A, Erande RD. [RhCp*Cl 2] 2-Catalyzed Indole Functionalization: Synthesis of Bioinspired Indole-Fused Polycycles. ACS OMEGA 2023; 8:27894-27919. [PMID: 37576617 PMCID: PMC10413382 DOI: 10.1021/acsomega.3c02510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 07/11/2023] [Indexed: 08/15/2023]
Abstract
Polycyclic fused indoles are ubiquitous in natural products and pharmaceuticals due to their immense structural diversity and biological inference, making them suitable for charting broader chemical space. Indole-based polycycles continue to be fascinating as well as challenging targets for synthetic fabrication because of their characteristic structural frameworks possessing biologically intriguing compounds of both natural and synthetic origin. As a result, an assortment of new chemical processes and catalytic routes has been established to provide unified access to these skeletons in a very efficient and selective manner. Transition-metal-catalyzed processes, in particular from rhodium(III), are widely used in synthetic endeavors to increase molecular complexity efficiently. In recent years, this has resulted in significant progress in reaching molecular scaffolds with enormous biological activity based on core indole skeletons. Additionally, Rh(III)-catalyzed direct C-H functionalization and benzannulation protocols of indole moieties were one of the most alluring synthetic techniques to generate indole-fused polycyclic molecules efficiently. This review sheds light on recent developments toward synthesizing fused indoles by cascade annulation methods using Rh(III)-[RhCp*Cl2]2-catalyzed pathways, which align with the comprehensive and sophisticated developments in the field of Rh(III)-catalyzed indole functionalization. Here, we looked at a few intriguing cascade-based synthetic designs catalyzed by Rh(III) that produced elaborate frameworks inspired by indole bioactivity. The review also strongly emphasizes mechanistic insights for reaching 1-2, 2-3, and 3-4-fused indole systems, focusing on Rh(III)-catalyzed routes. With an emphasis on synthetic efficiency and product diversity, synthetic methods of chosen polycyclic carbocycles and heterocycles with at least three fused, bridged, or spiro cages are reviewed. The newly created synthesis concepts or toolkits for accessing diazepine, indol-ones, carbazoles, and benzo-indoles, as well as illustrative privileged synthetic techniques, are included in the featured collection.
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Affiliation(s)
| | - Ghanshyam Mali
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Garima Dua
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Priya Samant
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
| | - Akhilesh Kumar
- Department
of Chemistry and Nano Science, Ewha Womans
University, Seoul 03760, Korea
| | - Rohan D. Erande
- Department
of Chemistry, Indian Institute of Technology
Jodhpur, Jodhpur 342037, India
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16
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Parammal A, Singh S, Kumar M, Xavier JS, Subramanian P. Robust Synthesis of Terpenoid Scaffolds under Mn(I)-Catalysis. J Org Chem 2023. [PMID: 37463248 DOI: 10.1021/acs.joc.3c00816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2023]
Abstract
The 6/6/5-fused tricyclic scaffold is a central feature of structurally complex terpenoid natural products. A step-economical cascade transformation that leads to a complex molecular skeleton is regarded as a sustainable methodology. Therefore, we report the first Mn(I)-catalyzed C(sp2)-H chemoselective in situ dienylation and diastereoselective intramolecular Diels-Alder reaction using iso-pentadienyl carbonate to access 6/6/5-fused tricyclic scaffolds. To the best of our knowledge, there is no such report thus far to utilize iso-pentadienyl carbonate as a substrate in C-H activation catalysis. Extensive mechanistic studies, such as the isolation of catalytically active organo-manganese(I) complexes, 1,3-dienyl-intermediates, and isotopic labeling experiments have supported the proposed mechanism of this cascade reaction.
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Affiliation(s)
- Athira Parammal
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Shubham Singh
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Manoj Kumar
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
| | - Joe Sam Xavier
- Indian Institution of Technology Kanpur, Kanpur, Uttar Pradesh 208016, India
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17
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Bakthadoss M, Reddy TT. Distal meta-C-H functionalization of α-substituted cinnamates. Chem Sci 2023; 14:5880-5886. [PMID: 37293646 PMCID: PMC10246684 DOI: 10.1039/d2sc06206b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/20/2023] [Indexed: 11/03/2023] Open
Abstract
Development of a novel strategy for the palladium-catalyzed selective meta-C-H activation of α-substituted cinnamates and their heterocyclic analogues with various alkenes using nitrile as a directing group (DG) has been described. Importantly, we introduced naphthoquinone, benzoquinones, maleimides and sulfolene as coupling partners in the meta-C-H activation reaction for the first time. Notably, allylation, acetoxylation and cyanation were also achieved through distal meta-C-H functionalization. This novel protocol also includes the coupling of various olefin-tethered bioactive molecules with high selectivity.
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18
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Bhaduri N, Pawar AB. Redox-neutral C-H annulation strategies for the synthesis of heterocycles via high-valent Cp*Co(III) catalysis. Org Biomol Chem 2023; 21:3918-3941. [PMID: 37128760 DOI: 10.1039/d3ob00133d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A variety of biologically active molecules, pharmaceuticals, and natural products consist of a nitrogen-containing heterocyclic backbone. The majority of them are isoquinolones, indoles, isoquinolines, etc.; thereby the synthesis and derivatization of such heterocycles are synthetically very relevant. Also, certain naphthol derivatives have high synthetic utility as agrochemicals and in dye industries. Previous approaches have utilized ruthenium, rhodium, or iridium which may not be desirable due to the high toxicity, low abundance, and high cost of such 4d and 5d metals. Moreover, the need for an external oxidant during the reaction also adds by-products to the system. A high-valent cobalt-catalyzed redox-neutral C-H functionalization strategy has emerged to be a far better alternative in this regard. The use of the non-noble metal cobalt allows for selectivity and specificity in product formation. Also, the redox-neutral concept avoids the use of an external oxidant either due to the presence of a metal in a non-variable oxidation state throughout the catalytic cycle or due to the presence of an oxidizing directing group or an oxidizing coupling partner. Such an oxidizing directing group not only directs the catalyst to a specific reaction site by chelation but also regenerates the catalyst at the end of the cycle. Certain bonds such as N-O, N-N, N-Cl, N-S, and C-S are the main game-players behind the oxidizing property of such directing groups. In the other case, the directing group only chelates the catalyst to a reaction center, whereas the oxidation is carried out by the upcoming group/coupling partner. Overall, merging the redox-neutral concept with the high-valent cobalt catalysis is paving the way forward toward a sustainable and environmentally friendly approach. This review critically describes the mechanistic understanding, scope, limitations, and synthesis of various biologically relevant heterocycles via the redox-neutral concept in the high-valent Cp*Co(III)-catalyzed C-H functionalization chemistry domain.
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Affiliation(s)
- Nilanjan Bhaduri
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.
| | - Amit B Pawar
- School of Chemical Sciences, Indian Institute of Technology Mandi, Mandi, Himachal Pradesh, 175005, India.
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19
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Suresh V, Naveen Kumar M, Nagireddy A, Sridhar Reddy M. Rhodium‐Catalyzed Dual C−H Activation for Regioselective Triple Annulation of Enaminones: Access to Polycyclic Naphthopyran Derivatives. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Vavilapalli Suresh
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Muniganti Naveen Kumar
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Attunuri Nagireddy
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
| | - Maddi Sridhar Reddy
- OSPC Division CSIR-Indian Institute of Chemical Technology Habsiguda Hyderabad 500007 India
- Academy of Scientific and Innovative Research Ghaziabad 201002 India
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20
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Wang M, Zhou Q, Zhang X, Fan X. Condition‐Controlled Divergent Synthesis of Imidazoindolone Spiroisoquinolinones from
N
‐Alkoxycarboxamide Indoles and Diazo Homophthalimides. Adv Synth Catal 2023. [DOI: 10.1002/adsc.202300085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
Affiliation(s)
- Manqing Wang
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
| | - Qianting Zhou
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
| | - Xinying Zhang
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
| | - Xuesen Fan
- Pingyuan Laboratory Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and Reactions Ministry of Education School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007, People's Republic of China
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21
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Mao Y, Chen W, Li C, Miao L, Lin Y, Ling F, Chen Z, Yao J. Synthesis of 3,4,5-trisubstituted phenols via Rh(III)-catalyzed alkenyl C-H activation assisted by phosphonium cations. Chem Commun (Camb) 2023; 59:3775-3778. [PMID: 36912283 DOI: 10.1039/d3cc00017f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
An efficient method for the construction of various 3,4,5-trisubstituted phenol derivatives has been achieved via the Rh(III)-catalyzed coupling of phosphonium cations with internal alkynes. This protocol shows good substrate compatibility, as an array of structurally and electronically diverse phosphonium compounds react efficiently with up to 87% yield.
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Affiliation(s)
- Yan Mao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Wenxi Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Changchang Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Lin Miao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Yanfei Lin
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Fei Ling
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Zhangpei Chen
- Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China.
| | - Jinzhong Yao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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22
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Garai B, Ali MR, Mandal R, Sundararaju B. Cp*Co(III)-Catalyzed C(8)-Nucleophilic Cascade Cyclization of Quinoline N-Oxide with 1,6-Enyne. Org Lett 2023; 25:2018-2023. [PMID: 36926924 DOI: 10.1021/acs.orglett.3c00305] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
The C(8)-selective nucleophilic cascade cyclization of quinoline N-oxide with easily derived 1,6-enyne from phenol derivatives is demonstrated. A variety of quinoline N-oxide and alkynes are discovered to be suitable for producing a library of quinoline N-oxide tethered cis-hydrobenzofurans with high yields and excellent functional group tolerance. The utility of the protocol has been accomplished by post-synthetic modification of the cyclized product. The mechanistic studies indicate a base-assisted internal electrophilic-type substitution (BIES)-type pathway for C-H bond activation, and electrospray ionization mass spectrometry (ESI-MS) analysis of the stoichiometric reaction confirmed the formation of a key five-membered cobaltacycle.
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Affiliation(s)
- Bholanath Garai
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Molla Rahamat Ali
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Rajib Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
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23
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Pati BV, Puthalath NN, Banjare SK, Nanda T, Ravikumar PC. Transition metal-catalyzed C-H/C-C activation and coupling with 1,3-diyne. Org Biomol Chem 2023; 21:2842-2869. [PMID: 36917476 DOI: 10.1039/d3ob00238a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Abstract
This review provides a broad overview of the recent developments in the field of transition metal-catalyzed C-H/C-C bond activation and coupling with 1,3-diyne for assembling alkynylated heterocycles, bis-heterocycles, and 1,3-enynes. Transition metal-catalyzed inert bond (C-H/C-C) activation has been the focus of attention among synthetic chemists in recent times. Enormous developments have taken place in C-H/C-C bond activation chemistry in the last two decades. In recent years the use of 2π-unsaturated units as coupling partners for the synthesis of heterocycles through C-H/C-C bond activation and annulation sequence has received immense attention. Among the unsaturated units employed for assembling heterocycles, the use of 1,3-diynes has garnered significant attention due to its ability to render bis-heterocycles in a straightforward manner. The C-H bond activation and coupling with 1,3-diyne has been very much explored in recent years. However, the development of strategies for the use of 1,3-diynes in the analogous C-C bond activation chemistry is less explored. Earlier methods employed to assemble bis-heterocycle used heterocycles that were preformed and pre-functionalized via transition metal-catalyzed coupling reactions. The expensive pre-functionalized halo-heterocycles and sensitive and expensive heterocyclic metal reagents limit its broad application. However, the transition metal-catalyzed C-H activation obviates the need for expensive heterocyclic metal reagents and pre-functionalized halo-heterocycles. The C-H bond activation strategy makes use of C-H bonds as functional groups for effecting the transformation. This renders the overall synthetic sequence both step and cost economic. Hence, this strategy of C-H activation and subsequent reaction with 1,3-diyne could be used for the larger-scale synthesis of chemicals in the pharmaceutical industry. Despite these advances, there is still the possibility of exploration of earth-abundant and cost-effective first-row transition metals (Ni, Cu, Mn. Fe, etc.) for the synthesis of bis-heterocycles. Moreover, the Cp*-ligand-free, simple metal-salt-mediated synthesis of bis-heterocycles is also less explored. Thus, more exploration of reaction conditions for the Cp*-free synthesis of bis-heterocycles is called for. We hope this review will inspire scientists to investigate these unexplored domains.
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Affiliation(s)
- Bedadyuti Vedvyas Pati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Nitha Nahan Puthalath
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Tanmayee Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Ponneri C Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400094, India
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24
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Cobalt(III)-catalyzed asymmetric ring-opening of 7-oxabenzonorbornadienes via indole C-H functionalization. Nat Commun 2023; 14:1094. [PMID: 36841798 PMCID: PMC9968317 DOI: 10.1038/s41467-023-36723-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 02/13/2023] [Indexed: 02/26/2023] Open
Abstract
Asymmetric ring-opening of 7-oxabenzonorbornadienes is achieved via Co-catalyzed indole C-H functionalization. The utilization of chiral Co-catalyst consisting of a binaphthyl-derived trisubstituted cyclopentadienyl ligand resulted in high yields (up to 99%) and excellent enantioselectivity (>99% ee) for the target products with tolerance for diverse functional groups. Opposite diastereoselectivities are obtained with chiral Co-catalyst or Cp*CoI2CO. Combined experimental and computational studies suggest β-oxygen elimination being the selectivity-determining step of the reaction. Meanwhile, the reactions of 7-azabenzonorbornadiene could also be executed in a diastereodivergent manner.
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25
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Liu X, Chu X. Metal-Free Synthesis of Functionalized Quinolines from 2-Styrylanilines and 2-Methylbenzothiazoles/2-Methylquinolines. ACS OMEGA 2023; 8:6940-6944. [PMID: 36844512 PMCID: PMC9948197 DOI: 10.1021/acsomega.2c07736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 01/19/2023] [Indexed: 06/18/2023]
Abstract
A facile functionalization of C(sp3)-H bonds and tandem cyclization strategy to synthesize quinoline derivatives from 2-methylbenzothiazoles or 2-methylquinolines and 2-styrylanilines has been developed. This work avoids the requirement for transition metals, offering a mild approach to activation of C(sp3)-H bonds and formation of new C-C and C-N bonds. This strategy features excellent functional group tolerance and scaled-up synthetic capability, thus providing an efficient and environmentally friendly access to medicinally valuable quinolines.
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26
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Li H, Shen M, Li B, Zhang X, Fan X. Solvent-Dependent Selective Synthesis of CF 3-Tethered Indazole Derivatives Based on Multiple Bond Activations. Org Lett 2023; 25:720-725. [PMID: 36706028 DOI: 10.1021/acs.orglett.2c04003] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Presented herein is a solvent-dependent selective synthesis of CF3-tethered indazole derivatives via the cascade reactions of 1-arylpyrazolidinones with trifluoromethyl ynones. Mechanistically, the formation of the title products involves cascade N-H/C-H/C-N/C-C bond cleavage along with pyrazole ring formation and pyrazolidinone ring opening. For the formation of a pyrazole scaffold, 1-phenylpyrazolidinone acts as a C2N2 synthon, while trifluoromethyl ynone serves as a C1 synthon. Meanwhile, trifluoromethyl ynone also acts as an enol unit to facilitate the ring opening of the pyrazolidinone ring and provide a trifluoropropenoxy fragment via cleavage of the alkynyl triple bond and migration of the cleaved moiety. When the reaction was run in trifluoroethanol instead of DCE, it selectively afforded indazole derivatives tethered with a trifluoroethoxy moiety through in situ transesterification. To our knowledge, this is the first synthesis of CF3-tethered indazole derivatives via concurrent alkynyl activation, pyrazole formation, and CF3 migration.
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Affiliation(s)
- Hao Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Mengyang Shen
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bin Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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27
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Zhang J, Yao L, Su JY, Liu YZ, Wang Q, Deng WP. Transition-metal-catalyzed aromatic C–H functionalization assisted by the phosphorus-containing directing groups. GREEN SYNTHESIS AND CATALYSIS 2023. [DOI: 10.1016/j.gresc.2023.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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28
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Chen W, Mao Y, Wang M, Ling F, Li C, Chen Z, Yao J. Rh(III)-catalyzed [4 + 1] cyclization of aryl substituted pyrazoles with cyclopropanols via C-H activation. Org Biomol Chem 2023; 21:775-782. [PMID: 36594518 DOI: 10.1039/d2ob02001g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A rhodium-catalyzed formal [4 + 1]-cyclization reaction of aryl substituted pyrazoles with cyclopropanols via C-H bond activation/cyclization processes to selectively construct a series of carbonyl functionalized pyrazolo[5,1-a]isoindoles is described. The reaction features good functional group compatibility and a broad substrate scope with respect to both cyclization components with up to 84% yields. Mechanistic studies indicated that the C-H cleavage might be the rate-determining step in this transformation.
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Affiliation(s)
- Wenxi Chen
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Yan Mao
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Min Wang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Fei Ling
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Changchang Li
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Zhangpei Chen
- Center for Molecular Science and Engineering, College of Science, Northeastern University, Shenyang 110819, China.
| | - Jinzhong Yao
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
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29
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Li N, Hu B, Zhang X, Fan X. Selective Construction of Spiro or Fused Heterocyclic Scaffolds via One-pot Cascade Reactions of 1-Arylpyrazolidinones with Maleimides. J Org Chem 2023; 88:60-74. [PMID: 36563107 DOI: 10.1021/acs.joc.2c01756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Presented herein is a controllable selective construction of spiro or fused heterocyclic scaffolds through the one-pot cascade reactions of 1-phenylpyrazolidinones with maleimides. To be specific, succinimide spiro pyrazolo[1,2-a]pyrazolones were effectively formed via [4 + 1] spiroannulation of 1-phenylpyrazolidinones with maleimides through simultaneous C(sp2)-H bond activation/functionalization and intramolecular cyclization along with the traceless fusion of the pyrazolidinonyl unit into the final product. In this reaction, air acts as a cost-effective and environmentally sustainable oxidant to assist the regeneration of the Rh(III) catalyst. Alternatively, succinimide-fused pyrazolidinonylcinnolines were formed from the same starting materials through an initial [4 + 1] spiroannulation followed by base-promoted skeleton rearrangement of the in situ formed spiro product without isolation. Notable features of these protocols include easily tunable selectivity, broad substrate scope, cost-effective and sustainable oxidant, excellent atom economy, and facile scalability.
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Affiliation(s)
- Na Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Bing Hu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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30
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Yu C, Xu Y, Zhang X, Fan X. Selective Synthesis of Pyrazolonyl Spirodihydroquinolines or Pyrazolonyl Spiroindolines under Aerobic or Anaerobic Conditions. Org Lett 2022; 24:9473-9478. [PMID: 36524816 DOI: 10.1021/acs.orglett.2c03952] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Presented herein is a condition-controlled selective synthesis of pyrazolonyl spirodihydroquinolines or pyrazolonyl spiroindolines through formal [5 + 1] or [4 + 1] spiroannulation of 2-alkenylanilines with diazopyrazolones. Mechanistically, the formation of the title products involves initial generation of a pyrazolonyl spiro-fused seven-membered ruthenacycle species serving as a key intermediate through Ru(II)-catalyzed C-H/N-H bonds metalation, carbene formation, and its migratory insertion. When the reaction is carried out under air, the key intermediate undergoes reductive elimination to afford spirodihydroquinoline. When the reaction is run under argon, the key intermediate undergoes protonation and intramolecular nucleophilic addition to furnish spiroindoline. This work provides an atom-economical protocol for the effective functionalization of alkenyl C(sp2)-H bond, allowing rapid and selective assembly of valuable spiroscaffolds with a broad range of substrates.
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Affiliation(s)
- Caiyun Yu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuanshuang Xu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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31
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Chen Q, You J, Tian T, Li Z, Kashihara M, Mori H, Nishihara Y. Nickel-Catalyzed Decarbonylative Reductive Alkylation of Aroyl Fluorides with Alkyl Bromides. Org Lett 2022; 24:9259-9263. [PMID: 36516299 DOI: 10.1021/acs.orglett.2c03823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This paper describes the nickel-catalyzed reductive alkylation of aroyl fluorides with alkyl bromides in a decarbonylative manner. In this reaction, various functional groups are well tolerated and the C(sp2)-C(sp3) bond can be constructed directly without the use of organometallic reagents. The present reaction is a cross-electrophile coupling via the radical pathway, affording the corresponding alkylarenes in moderate to good yields.
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Affiliation(s)
- Qiang Chen
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Jingwen You
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Tian Tian
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Zhenyao Li
- Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Myuto Kashihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Hiroki Mori
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yasushi Nishihara
- Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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32
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Ghosh P, Kwon NY, Byun Y, Mishra NK, Park JS, Kim IS. Cobalt(II)-Catalyzed C–H Alkylation of N-Heterocycles with 1,4-Dihydropyridines. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Prithwish Ghosh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Na Yeon Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Youjung Byun
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | | | - Jung Su Park
- Department of Chemistry, Sookmyung Women’s University, Seoul 04310, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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33
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Singh A, Shukla RK, Volla CMR. Ru(II)-Catalyzed Regioselective Annulation of 2-Hydroxystyrenes with Allenyl Acetates via Vinylic C–H Activation. Org Lett 2022; 24:8936-8941. [DOI: 10.1021/acs.orglett.2c03192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Anurag Singh
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Rahul K. Shukla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Chandra M. R. Volla
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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34
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Bora D, John SE, Galla MS, Sathish M, Shankaraiah N. Rh(III)-catalysed site-selective alkylation of β-carbolines/isoquinolines and tandem C H/C N functionalization to construct indolizine-indole frameworks. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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35
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Borrego E, Caballero A, Pérez PJ. Micellar Catalysis as a Tool for C-H Bond Functionalization toward C-C Bond Formation. Organometallics 2022; 41:3084-3098. [PMID: 37810590 PMCID: PMC10552653 DOI: 10.1021/acs.organomet.2c00309] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Indexed: 11/29/2022]
Abstract
Micelles generated upon dissolving surfactants in water can be employed as nanovessels for catalytic transformations, in the so-called micellar catalysis methodology. This review is focused on the use of micellar catalysis in the context of the catalytic functionalization of carbon-hydrogen bonds. The micelles accumulate catalyst and reactants in their inner volume in such a high local concentration that kinetics are favored. The consequence is that, in most cases, processes that in conventional organic solvents require high temperatures and long reaction times are achieved in milder conditions when micellar catalysis is employed.
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Affiliation(s)
- Elena Borrego
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
| | - Ana Caballero
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
| | - Pedro J. Pérez
- Laboratorio de Catálisis
Homogénea, Unidad Asociada al CSIC, CIQSO Centro de Investigación
en Química Sostenible and Departamento de Química, Universidad de Huelva, Campus de El Carmen, 21007 Huelva, Spain
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36
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Yang C, Shi L, Wang F, Su Y, Xia JB, Li F. Rhodium-Catalyzed Asymmetric (3 + 2 + 2) Annulation via N–H/C–H Dual Activation and Internal Alkyne Insertion toward N-Fused 5/7 Bicycles. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chao Yang
- School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
| | - Lijun Shi
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Fang Wang
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Yijin Su
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Ji-Bao Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Fuwei Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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37
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Wang Y, Jiang Y, Zhang X, Fan X. Synthesis of 1,3-benzooxazine spirosuccinimides through the cascade reaction of 2-phenoxy-1H-benzo[d]imidazoles with maleimides. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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38
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Yang L, Liu Z, Tang T, Tang S, Li B, Wang B. Ruthenium(II)-Catalyzed Grignard-Type Nucleophilic Addition of C(sp 2)-H Bonds to Unactivated Aldehydes. J Org Chem 2022; 87:14723-14730. [PMID: 36256602 DOI: 10.1021/acs.joc.2c02039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Grignard-type nucleophilic addition of C(sp2)-H bonds to aldehydes catalyzed by high-oxidation-state transition metal complexes is limited to activated aldehydes. Herein, we report the first example of Grignard-type nucleophilic addition of C(sp2)-H bonds to unactivated aldehydes catalyzed by high-oxidation-state ruthenium(II). The reaction has mild reaction conditions and good functional group tolerance. The corresponding alcohol products are obtained in good to excellent yields.
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Affiliation(s)
- Lidong Yang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Zezhao Liu
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Tingyu Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Shibiao Tang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Bin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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39
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Sakamoto K, Nishimura T. Asymmetric addition of an N-methyl C(sp 3)-H bond to cyclic alkenes enabled by an iridium/phosphine-olefin catalyst. Chem Commun (Camb) 2022; 58:11783-11786. [PMID: 36172832 DOI: 10.1039/d2cc04642c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Iridium-catalyzed asymmetric C-H addition of an N-methyl group on 3-trifluoromethyl-2-(N-methylamino)pyridine to cyclic alkenes was realized by using a phosphine-olefin ligand. Indene and its 7-substituted derivatives, acenaphthylene, and some bicyclic alkenes underwent the addition to give the corresponding products in good yields with high enantioselectivity.
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Affiliation(s)
- Kana Sakamoto
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sumiyoshi, Osaka 558-8585, Japan.
| | - Takahiro Nishimura
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sumiyoshi, Osaka 558-8585, Japan.
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40
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Saha A, Ghosh A, Guin S, Panda S, Mal DK, Majumdar A, Akita M, Maiti D. Substrate‐Rhodium Cooperativity in Photoinduced
ortho
‐Alkynylation of Arenes. Angew Chem Int Ed Engl 2022; 61:e202210492. [DOI: 10.1002/anie.202210492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Argha Saha
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Animesh Ghosh
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Srimanta Guin
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Sanjib Panda
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Dibya Kanti Mal
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Abhirup Majumdar
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Munetaka Akita
- Tokyo Tech World Research Hub Initiative (WRHI) Laboratory for Chemistry and Life Science Tokyo Institute of Technology Tokyo Japan
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay Powai Mumbai 400076 India
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41
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Ramachandran K, Anbarasan P. Rhodium-Catalyzed C2-Alkylation of Indoles with Cyclopropanols Using N, N-Dialkylcarbamoyl as a Traceless Directing Group. Org Lett 2022; 24:6745-6749. [DOI: 10.1021/acs.orglett.2c02527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kuppan Ramachandran
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, India
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42
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Ruthenium (II) catalysed regioselective C-2ʹ-alkenylation of 2-phenylimidazo[1,2-a]pyridine-3-carbaldehydes. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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43
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Zou P, Wang K, Luo G. Continuous deacylation of amides in a high-temperature and high-pressure microreactor. Front Chem Sci Eng 2022. [DOI: 10.1007/s11705-022-2182-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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44
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Das D, Das AR. Access to π-Extended Heterocycles Containing Pyrrolo-Coumarin Cores Involving -COCH 3 as a Traceless Directing Group and Materializing Two Successive sp 2C-H/sp 3N-H and sp 2C-H/sp 2N-H Activations. J Org Chem 2022; 87:11443-11456. [PMID: 36000720 DOI: 10.1021/acs.joc.2c00958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient protocol has been developed for the preparation of π-extended N-heterocycles involving a Rh(III)-catalyzed C-H activation reaction starting from 3-acetamidocoumarins and internal alkynes. The isolation of the intermediate pyrrolo-coumarin suggests that the -COCH3 group in acetamidocoumarins performs the role of a traceless directing group. Besides, the use of commercially available [Cp*RhCl2]2 adds more importance as no additional modification of the catalyst is required. A two-step protocol bearing intermediate pyrrolo-coumarin can be further functionalized to highly decorated heterocyclic moieties materializing sp2 C-H and sp2 N-H coupling. Moreover, one of the pyrrolo-coumarin compounds (3da) is capable of differentiating between Cr(III) and Cr(VI) ions as revealed via fluorescence spectroscopy. In addition, intermediate pyrrolo-coumarin is further functionalized to spirocyclic N-heterocycles.
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Affiliation(s)
- Dwaipayan Das
- Department of Chemistry, University of Calcutta, Kolkata 700009, India
| | - Asish R Das
- Department of Chemistry, University of Calcutta, Kolkata 700009, India
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45
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Saha A, Ghosh A, Guin S, Panda S, Mal DK, Majumdar A, Akita M, Maiti D. Substrate‐Rhodium Cooperativity in Photoinduced ortho‐Alkynylation of Arenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Argha Saha
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Animesh Ghosh
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Srimanta Guin
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Sanjib Panda
- Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Dibya Kanti Mal
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Abhirup Majumdar
- IIT Bombay: Indian Institute of Technology Bombay CHEMISTRY INDIA
| | - Munetaka Akita
- Tokyo Institute of Technology Chemistry and Life Science JAPAN
| | - Debabrata Maiti
- Indian Institute of Technology-Bombay Department of Chemistry Powai 400076 Mumbai INDIA
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46
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Cai X, Song X, Zhu Q, Zhang X, Fan X. Concise Synthesis of Spirocyclic Dihydrophthalazines through Spiroannulation Reactions of Aryl Azomethine Imines with Cyclic Diazo Compounds. J Org Chem 2022; 87:11048-11062. [PMID: 35921479 DOI: 10.1021/acs.joc.2c01312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Spiroannulation reactions are fundamental and invaluable for the synthesis of spirocyclic compounds. Presented herein are novel cascade reactions of aryl azomethine imines with cyclic diazo compounds leading to the formation of spirocyclic dihydrophthalazine derivatives. Based on experimental mechanistic studies, the formation of the title products is believed to go through azomethine imine-assisted cylcometalation, Rh-carbene formation through dediazonization, and migratory insertion followed by reductive elimination and azomethine imine ring opening. Control experiments revealed that air acts as an effective and sustainable co-oxidant to facilitate the cascade reaction. In general, this concise synthesis of the unprecedented spirocyclic dihydrophthalazine derivatives has advantages such as easily accessible substrates, good functional group compatibility, mild reaction conditions, high efficiency and selectivity, and excellent atom-economy. In addition, the value of this protocol is underlined by its ready scalability and divergent derivation of products.
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Affiliation(s)
- Xinyuan Cai
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xia Song
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qiuhui Zhu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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47
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Niu J, Wu H, Niu C, Huang G, Zhang C. Palladium and Amino Acid Co-Catalyzed Highly Regio- and Enantioselective Hydroarylation of Unbiased Alkenes. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jiapan Niu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Hongli Wu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Changhao Niu
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Genping Huang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
| | - Chun Zhang
- Institute of Molecular Plus, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Weijin Road 92, Tianjin 300072, China
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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48
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Rani N, Mazumder S. Why Does an Inert C4–H Bond in Indolyl Aldehyde Get Activated Unexpectedly by a Rh(III) Catalyst over a More Reactive C2–H Bond while the Opposite Is True for Acetophenone? Guidelines for Inverting Regioselectivity. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Neha Rani
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India
| | - Shivnath Mazumder
- Department of Chemistry, Indian Institute of Technology Jammu, Jammu 181221, India
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49
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Liang H, Guo W, Li J, Jiang J, Wang J. Chiral Arene Ligand as Stereocontroller for Asymmetric C-H Activation. Angew Chem Int Ed Engl 2022; 61:e202204926. [PMID: 35445516 DOI: 10.1002/anie.202204926] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Indexed: 12/20/2022]
Abstract
Development of chiral ligands is the most fundamental task in metal-catalyzed asymmetric synthesis. In the last 60 years, various kinds of ligands have been sophisticatedly developed. However, it remains a long-standing challenge to develop practically useful chiral η6 -arene ligands, thereby seriously hampering the asymmetric synthesis promoted by arene-metal catalysts. Herein, we report the design and synthesis of a class of readily tunable, C2 -symmetric chiral arene ligands derived from [2.2]paracyclophane. Its ruthenium(II) complexes have been prepared and successfully applied in the enantioselective C-H activation to afford a series of axially chiral isoquinolones (up to 99 % yield and 96 % ee). This study not only lays chemists' longstanding doubts about whether it is possible to use chiral arene ligands to stereocontrol ruthenium(II)-catalyzed asymmetric C-H activation, but also opens up a new avenue to achieve asymmetric C-H activation.
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Affiliation(s)
- Hao Liang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510006, P. R. China.,Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Weicong Guo
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510006, P. R. China.,Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Junxuan Li
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510006, P. R. China.,Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Jijun Jiang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510006, P. R. China.,Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
| | - Jun Wang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510006, P. R. China.,Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, Guangzhou, 510006, P. R. China
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50
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Kejriwal A. Non-heme iron coordination complexes for alkane oxidation using hydrogen peroxide (H 2O 2) as powerful oxidant. J COORD CHEM 2022. [DOI: 10.1080/00958972.2022.2085567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Ambica Kejriwal
- Department of Chemistry, Raiganj University, Raiganj, West Bengal, India
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