1
|
Yoshimura A, Zhdankin VV. Recent Progress in Synthetic Applications of Hypervalent Iodine(III) Reagents. Chem Rev 2024. [PMID: 39269928 DOI: 10.1021/acs.chemrev.4c00303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
Hypervalent iodine(III) compounds have found wide application in modern organic chemistry as environmentally friendly reagents and catalysts. Hypervalent iodine reagents are commonly used in synthetically important halogenations, oxidations, aminations, heterocyclizations, and various oxidative functionalizations of organic substrates. Iodonium salts are important arylating reagents, while iodonium ylides and imides are excellent carbene and nitrene precursors. Various derivatives of benziodoxoles, such as azidobenziodoxoles, trifluoromethylbenziodoxoles, alkynylbenziodoxoles, and alkenylbenziodoxoles have found wide application as group transfer reagents in the presence of transition metal catalysts, under metal-free conditions, or using photocatalysts under photoirradiation conditions. Development of hypervalent iodine catalytic systems and discovery of highly enantioselective reactions using chiral hypervalent iodine compounds represent a particularly important recent achievement in the field of hypervalent iodine chemistry. Chemical transformations promoted by hypervalent iodine in many cases are unique and cannot be performed by using any other common, non-iodine-based reagent. This review covers literature published mainly in the last 7-8 years, between 2016 and 2024.
Collapse
Affiliation(s)
- Akira Yoshimura
- Faculty of Pharmaceutical Sciences, Aomori University, 2-3-1 Kobata, Aomori 030-0943, Japan
| | - Viktor V Zhdankin
- Department of Chemistry and Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| |
Collapse
|
2
|
Linde E, Olofsson B. Synthesis of Complex Diarylamines through a Ring-Opening Difunctionalization Strategy. Angew Chem Int Ed Engl 2023; 62:e202310921. [PMID: 37847128 DOI: 10.1002/anie.202310921] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 10/13/2023] [Accepted: 10/17/2023] [Indexed: 10/18/2023]
Abstract
The diarylation and skeletal diversification of unstrained cyclic amines was exploited to expand and modify the favorable properties of this important substrate class with pivotal roles in drug discovery. Cyclic amines were employed in the synthesis of a novel class of amino-substituted diaryliodonium salts, which were converted to highly functionalized diarylamines through an atom-efficient one-pot N-arylation/ring opening reaction with external nucleophiles. The reaction proceeds through in situ formation of a diarylammonium intermediate that undergoes a nucleophilic ring opening by cleavage of the strong C-N bond. A wide variety of diarylamines was obtained through introduction of two different aryl groups of varied electronics, and the retained iodo-substituent enables downfield diversifications of the products. More than 20 nucleophiles, including amines, phenols, carboxylic acids, thiols and halides, were alkylated with high functional group tolerance, and the strategy proved efficient also in in late-stage functionalization of natural products and pharmaceuticals.
Collapse
Affiliation(s)
- Erika Linde
- Department of Organic Chemistry Arrhenius Laboratory, Stockholm University, 106 91, Stockholm, Sweden
| | - Berit Olofsson
- Department of Organic Chemistry Arrhenius Laboratory, Stockholm University, 106 91, Stockholm, Sweden
| |
Collapse
|
3
|
Radzhabov AD, Soldatova NS, Ivanov DM, Yusubov MS, Kukushkin VY, Postnikov PS. Metal-free and atom-efficient protocol for diarylation of selenocyanate by diaryliodonium salts. Org Biomol Chem 2023; 21:6743-6749. [PMID: 37552120 DOI: 10.1039/d3ob00833a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
We developed an atom- and reaction mass efficient strategy for the preparation of diarylselenides using iodonium salts as reactants. The developed approach allows the obtaining of diarylselenides from the corresponding trimethoxyphenyl-substituted iodonium salts via a two-step one-pot reaction sequence. The proposed metal-free methodology is based on the involvement of both iodonium aryl groups for diarylation.
Collapse
Affiliation(s)
- Amirbek D Radzhabov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
| | - Natalia S Soldatova
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
| | - Daniil M Ivanov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Mekhman S Yusubov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
| | - Vadim Yu Kukushkin
- Institute of Chemistry, Saint Petersburg State University, Saint Petersburg 199034, Russian Federation
| | - Pavel S Postnikov
- Research School of Chemistry and Applied Biomedical Sciences, Tomsk Polytechnic University, Tomsk 634050, Russian Federation.
- Department of Solid State Engineering, Institute of Chemical Technology, Prague 16628, Czech Republic
| |
Collapse
|
4
|
Mondal S, Di Tommaso EM, Olofsson B. Transition-Metal-Free Difunctionalization of Sulfur Nucleophiles. Angew Chem Int Ed Engl 2023; 62:e202216296. [PMID: 36546892 PMCID: PMC10108051 DOI: 10.1002/anie.202216296] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/21/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Efficient protocols for accessing iodo-substituted diaryl and aryl(vinyl) sulfides have been developed using iodonium salts as reactive electrophilic arylation and vinylation reagents. The reactions take place under transition-metal-free conditions, employing odorless and convenient sulfur reagents. A wide variety of functional groups are tolerated in the S-diarylation, enabling the regioselective late-stage application of several heterocycles and drug molecules under mild reaction conditions. A novel S-difunctionalization pathway was discovered using vinyliodonium salts, which proceeds under additive-free reaction conditions and grants excellent stereoselectivity in the synthesis of aryl(vinyl) sulfides. A one-pot strategy combining transition-metal-free diarylation and subsequent reduction provided facile access to electron-rich thioanilines and a direct synthesis of a potential drug candidate derivative. The retained iodo group allows a wide array of further synthetic transformations. Mechanistic insights were elucidated by isolating the key intermediate, and the relevant energy profile was substantiated by DFT calculations.
Collapse
Affiliation(s)
- Shobhan Mondal
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Ester Maria Di Tommaso
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| |
Collapse
|
5
|
Le Du E, Waser J. Recent progress in alkynylation with hypervalent iodine reagents. Chem Commun (Camb) 2023; 59:1589-1604. [PMID: 36656618 PMCID: PMC9904279 DOI: 10.1039/d2cc06168f] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/23/2022] [Indexed: 01/20/2023]
Abstract
Although alkynes are one of the smallest functional groups, they are among the most versatile building blocks for organic chemistry, with applications ranging from biochemistry to material sciences. Alkynylation reactions have traditionally relied on the use of acetylenes as nucleophiles. The discovery and development of ethynyl hypervalent iodine reagents have allowed to greatly expand the transfer of alkynes as electrophilic synthons. In this feature article the progress in the field since 2018 will be presented. After a short introduction on alkynylation reactions and hypervalent iodine reagents, the developments in the synthesis of alkynyl hypervalent iodine reagents will be discussed. Their recent use in base-mediated and transition-metal catalyzed alkynylations will be described. Progress in radical-based alkynylations and atom-economical transformations will then be presented.
Collapse
Affiliation(s)
- Eliott Le Du
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne EPFL, SB ISIC, LCSO, BCH 4306, 1015, Lausanne, Switzerland.
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering École Polytechnique Fédérale de Lausanne EPFL, SB ISIC, LCSO, BCH 4306, 1015, Lausanne, Switzerland.
| |
Collapse
|
6
|
Elsherbini M, Moran WJ. Toward a General Protocol for Catalytic Oxidative Transformations Using Electrochemically Generated Hypervalent Iodine Species. J Org Chem 2023; 88:1424-1433. [PMID: 36689352 PMCID: PMC9903329 DOI: 10.1021/acs.joc.2c02309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A simple catalytic electrosynthetic protocol for oxidative transformations mediated by hypervalent iodine reagents has been developed. In this protocol, electricity drives the iodine(I)/iodine(III) catalytic cycle enabling catalysis with in situ generated hypervalent iodine species, thereby eliminating chemical oxidants and the inevitable chemical waste associated with their mode of action. In addition, no added electrolytic salts are needed in this process. The developed method has been validated using two different hypervalent iodine-mediated transformations: (i) the oxidative cyclization of N-allylic and N-homoallylic amides to the corresponding dihydrooxazole and dihydro-1,3-oxazine derivatives, respectively, and (ii) the α-tosyloxylation of ketones. Both reactions proceeded smoothly under the developed catalytic electrosynthetic conditions without reoptimization, featuring a wide substrate scope and excellent functional group tolerance. In addition, scale-up to gram-scale and catalyst recovery were easily achieved maintaining the high efficiency of the process.
Collapse
|
7
|
Peng X, Rahim A, Peng W, Jiang F, Gu Z, Wen S. Recent Progress in Cyclic Aryliodonium Chemistry: Syntheses and Applications. Chem Rev 2023; 123:1364-1416. [PMID: 36649301 PMCID: PMC9951228 DOI: 10.1021/acs.chemrev.2c00591] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Indexed: 01/18/2023]
Abstract
Hypervalent aryliodoumiums are intensively investigated as arylating agents. They are excellent surrogates to aryl halides, and moreover they exhibit better reactivity, which allows the corresponding arylation reactions to be performed under mild conditions. In the past decades, acyclic aryliodoniums are widely explored as arylation agents. However, the unmet need for acyclic aryliodoniums is the improvement of their notoriously low reaction economy because the coproduced aryl iodides during the arylation are often wasted. Cyclic aryliodoniums have their intrinsic advantage in terms of reaction economy, and they have started to receive considerable attention due to their valuable synthetic applications to initiate cascade reactions, which can enable the construction of complex structures, including polycycles with potential pharmaceutical and functional properties. Here, we are summarizing the recent advances made in the research field of cyclic aryliodoniums, including the nascent design of aryliodonium species and their synthetic applications. First, the general preparation of typical diphenyl iodoniums is described, followed by the construction of heterocyclic iodoniums and monoaryl iodoniums. Then, the initiated arylations coupled with subsequent domino reactions are summarized to construct polycycles. Meanwhile, the advances in cyclic aryliodoniums for building biaryls including axial atropisomers are discussed in a systematic manner. Finally, a very recent advance of cyclic aryliodoniums employed as halogen-bonding organocatalysts is described.
Collapse
Affiliation(s)
- Xiaopeng Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
| | - Abdur Rahim
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Weijie Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Feng Jiang
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Shijun Wen
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
| |
Collapse
|
8
|
Kuczmera TJ, Dietz A, Boelke A, Nachtsheim BJ. Synthesis and reactivity of azole-based iodazinium salts. Beilstein J Org Chem 2023; 19:317-324. [PMID: 36960303 PMCID: PMC10028571 DOI: 10.3762/bjoc.19.27] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 03/06/2023] [Indexed: 03/18/2023] Open
Abstract
A systematic investigation of imidazo- and pyrazoloiodazinium salts is presented. Besides a robust synthetic protocol that allowed us to synthesize these novel cyclic iodonium salts in their mono- and dicationic forms, we gained in-depth structural information through single-crystal analysis and demonstrated the ring opening of the heterocycle-bridged iodonium species. For an exclusive set of dicationic imidazoiodaziniums, we show highly delicate post-oxidation functionalizations retaining the hypervalent iodine center.
Collapse
Affiliation(s)
- Thomas J Kuczmera
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Annalena Dietz
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Andreas Boelke
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| |
Collapse
|
9
|
Linde E, Knippenberg N, Olofsson B. Synthesis of Cyclic and Acyclic ortho-Aryloxy Diaryliodonium Salts for Chemoselective Functionalizations. Chemistry 2022; 28:e202202453. [PMID: 36083826 PMCID: PMC10092902 DOI: 10.1002/chem.202202453] [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: 08/08/2022] [Indexed: 12/14/2022]
Abstract
Two regioselective, high-yielding one-pot routes to oxygen-bridged cyclic diaryliodonium salts and ortho-aryloxy-substituted acyclic diaryliodonium salts are presented. Starting from easily available ortho-iodo diaryl ethers, complete selectivity in formation of either the cyclic or acyclic product could be achieved by varying the reaction conditions. The complimentary reactivities of these novel ortho-oxygenated iodonium salts were demonstrated through a series of chemoselective arylations under metal-catalyzed and metal-free conditions, to deliver a range of novel, ortho-functionalized diaryl ether derivatives.
Collapse
Affiliation(s)
- Erika Linde
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91, Stockholm, Sweden
| | - Niels Knippenberg
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91, Stockholm, Sweden
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91, Stockholm, Sweden
| |
Collapse
|
10
|
Shimizu A, Shibata A, Kano T, Kumai Y, Kawakami R, Esaki H, Fukushima K, Tada N, Itoh A. Synthesis of 4-Imidazolidinones from Diamides and Ethynyl Benziodoxolones via Double Michael-Type Addition: Ethynyl Benziodoxolones as Electrophilic Ynol Synthons. Org Lett 2022; 24:8859-8863. [DOI: 10.1021/acs.orglett.2c03648] [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)
- Ayaka Shimizu
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Atsushi Shibata
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Takashi Kano
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Yuuichi Kumai
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Ryouhei Kawakami
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Hiroyoshi Esaki
- Hyogo Medical University, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Kazuaki Fukushima
- Hyogo Medical University, 1-1 Mukogawa-cho, Nishinomiya, Hyogo 663-8501, Japan
| | - Norihiro Tada
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Akichika Itoh
- Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| |
Collapse
|
11
|
Sihag M, Soni R, Rani N, Kinger M, Kumar Aneja D. Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment I. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2022.2113964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Monika Sihag
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Rinku Soni
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Neha Rani
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Mayank Kinger
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Deepak Kumar Aneja
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| |
Collapse
|
12
|
A one-pot cascade protocol for diarylation of amines and water. STAR Protoc 2022; 3:101700. [PMID: 36149800 PMCID: PMC9519595 DOI: 10.1016/j.xpro.2022.101700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/27/2022] [Accepted: 08/18/2022] [Indexed: 01/25/2023] Open
Abstract
N- and O-arylated compounds are prevalent in pharmaceuticals and materials, and efficient approaches for their synthesis are important. Herein, we present an efficient protocol for the diarylation of aliphatic amines and water with two structurally different aryl groups in one single step, yielding highly functionalized diaryl amines and ethers. We describe the synthesis of the required diaryliodonium salts and detail the procedure for the diarylation. The protocol is limited to use of unhindered amines and diaryliodonium salts with certain substituents. For complete details on the use and execution of this protocol, please refer to Linde et al. (2022).
Collapse
|
13
|
Wang W, Wang Y. Copper-Catalyzed Chemo-, Regio-, and Stereoselective Multicomponent 1,2,3-Trifunctionalization of Internal Alkynes. Org Lett 2022; 24:1871-1875. [PMID: 35238207 DOI: 10.1021/acs.orglett.2c00499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Herein, we report the first diaryliodonium salts promoted multicomponent 1,2,3-trifunctionalization of alkynes, where both the acetylenic bond and the adjacent nonactivated propargylic C(sp3)-H bond were functionalized synergistically to generate α-arylated enones with high chemo-, regio-, and stereoselectivity. A broad spectrum of diaryliodonium salts and internal alkynes could be utilized in this protocol, and a diverse collection of highly substituted and stereochemically defined linear and cyclic complex structures could be elaborated from the enone products.
Collapse
Affiliation(s)
- Weilin Wang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| | - Youliang Wang
- School of Chemistry, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University (XJTU), Xi'an, 710049, China
| |
Collapse
|
14
|
Conceptually novel diarylation for sustainable synthesis. Chem 2022. [DOI: 10.1016/j.chempr.2022.02.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
15
|
Linde E, Bulfield D, Kervefors G, Purkait N, Olofsson B. Diarylation of N- and O-nucleophiles through a metal-free cascade reaction. Chem 2022. [DOI: 10.1016/j.chempr.2022.01.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
16
|
Patel BK, Dahiya A, Sahoo AK, Chakraborty N, Das B. Updates on hypervalent-iodine reagents in metal-free organic synthesis. Org Biomol Chem 2022; 20:2005-2027. [DOI: 10.1039/d1ob02233d] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Hypervalent iodine (HVI) chemistry is a rapidly growing subdomain of contemporary organic chemistry because of its enormous synthetic applications. The high nucleofugality of the phenyliodonio group (I+Ph) and their radical...
Collapse
|
17
|
Peng H, Liu Q, Sun Y, Luo B, Yu T, Huang P, Zhu D, Wen S. Tandem cyclization/arylation of diaryliodoniums via in situ constructed benzoxazole as a directing group for atom-economical transformation. Org Chem Front 2022. [DOI: 10.1039/d1qo01463c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Linear diaryliodoniums often undergo only single arylation and leave equivalent aryl iodide as waste.
Collapse
Affiliation(s)
- Hui Peng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, People's Republic of China
| | - Qian Liu
- School of Pharmacy, Guangdong Pharmaceutical University, 280 Waihuan East Road, Guangzhou 510006, People's Republic of China
| | - Yameng Sun
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, People's Republic of China
| | - Bingling Luo
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, People's Republic of China
| | - Tianyian Yu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, People's Republic of China
| | - Peng Huang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, People's Republic of China
| | - Daqian Zhu
- School of Pharmacy, Guangdong Pharmaceutical University, 280 Waihuan East Road, Guangzhou 510006, People's Republic of China
| | - Shijun Wen
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, 651 Dongfeng East Road, Guangzhou 510060, People's Republic of China
| |
Collapse
|
18
|
Boelke A, Kuczmera TJ, Lork E, Nachtsheim BJ. N-Heterocyclic Iod(az)olium Salts - Potent Halogen-Bond Donors in Organocatalysis. Chemistry 2021; 27:13128-13134. [PMID: 34160859 PMCID: PMC8519039 DOI: 10.1002/chem.202101961] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Indexed: 01/03/2023]
Abstract
This article describes the application of N-heterocyclic iod(az)olium salts (NHISs) as highly reactive organocatalysts. A variety of mono- and dicationic NHISs are described and utilized as potent XB-donors in halogen-bond catalysis. They were benchmarked in seven diverse test reactions in which the activation of carbon- and metal-chloride bonds as well as carbonyl and nitro groups was achieved. N-methylated dicationic NHISs rendered the highest reactivity in all investigated catalytic applications with reactivities even higher than all previously described monodentate XB-donors based on iodine(I) and (III) and the strong Lewis acid BF3 .
Collapse
Affiliation(s)
- Andreas Boelke
- Institut für Organische und Analytische ChemieUniversität BremenLeobener Straße NW2C28359BremenGermany
| | - Thomas J. Kuczmera
- Institut für Organische und Analytische ChemieUniversität BremenLeobener Straße NW2C28359BremenGermany
| | - Enno Lork
- Institut für Anorganische Chemie und KristallographieUniversität BremenLeobener Straße NW2C28359BremenGermany
| | - Boris J. Nachtsheim
- Institut für Organische und Analytische ChemieUniversität BremenLeobener Straße NW2C28359BremenGermany
| |
Collapse
|
19
|
Robidas R, Legault CY. Cyclic Haloiodanes: Syntheses, Applications and Fundamental Studies. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202100111] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Raphaël Robidas
- Department of Chemistry Université de Sherbrooke Sherbrooke Québec J1K 2R1 Canada
| | - Claude Y. Legault
- Department of Chemistry Université de Sherbrooke Sherbrooke Québec J1K 2R1 Canada
| |
Collapse
|
20
|
Kafuta K, Rugen CJ, Heilmann T, Liu T, Golz C, Alcarazo M. Reactivity of 5-(Alkynyl)dibenzothiophenium Salts: Synthesis of Diynes, Vinyl Sulfones, and Phenanthrenes. European J Org Chem 2021; 2021:4038-4048. [PMID: 34588919 PMCID: PMC8453815 DOI: 10.1002/ejoc.202100323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/14/2021] [Indexed: 11/13/2022]
Abstract
The reactivity of 5-(alkynyl)dibenzothiophenium salts 1 is explored in the presence of different nucleophiles, dienes, and under photochemical conditions. Reaction with lithium acetylides affords diynes in moderate yields; while depending on the substitution pattern, the reaction with sulfinates delivers either the alkyne transfer products, alkynyl sulfones, or β-(sulfonium) vinyl sulfones through addition to the C-C triple bond. Similar behavior is observed when tosylamines are used as nucleophiles. Salts of general formula 1 also react with dienes to render the corresponding Diels-Alder cycloadducts. The vinyl sulfonium salts obtained by these routes further react with nucleophiles through a Michael addition, dibenzothiophene elimination sequence. Alternatively, they also engage in photoinduced radical cyclizations to produce substituted phenanthrenes. Attempts to use this specific addition/radical cyclization sequence for the construction of the 6a,7-dehydroaporphine skeleton present in several families of alkaloids are also described.
Collapse
Affiliation(s)
- Kevin Kafuta
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr 237077GöttingenGermany
| | - Christian J. Rugen
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr 237077GöttingenGermany
| | - Tobias Heilmann
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr 237077GöttingenGermany
| | - Tianshu Liu
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr 237077GöttingenGermany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr 237077GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr 237077GöttingenGermany
| |
Collapse
|
21
|
Boelke A, Sadat S, Lork E, Nachtsheim BJ. Pseudocyclic bis-N-heterocycle-stabilized iodanes - synthesis, characterization and applications. Chem Commun (Camb) 2021; 57:7434-7437. [PMID: 34231585 DOI: 10.1039/d1cc03097c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Bis-N-heterocycle-stabilized λ3-iodanes (BNHIs) based on azoles are introduced as novel structural motifs in hypervalent iodine chemistry. A performance test in a variety of benchmark reactions including sulfoxidations and phenol dearomatizations revealed a bis-N-bound pyrazole substituted BNHI as the most reactive derivative. Its solid-state structure was characterized via X-ray analysis implying strong intramolecular interactions between the pyrazole nitrogen atoms and the hypervalent iodine centre.
Collapse
Affiliation(s)
- Andreas Boelke
- Institute for Organic and Analytical Chemistry, University of Bremen, Bremen 28359, Germany.
| | - Soleicha Sadat
- Institute for Organic and Analytical Chemistry, University of Bremen, Bremen 28359, Germany.
| | - Enno Lork
- Institute for Inorganic Chemistry and Crystallography, University of Bremen, Bremen 28359, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, Bremen 28359, Germany.
| |
Collapse
|
22
|
Xie R, Lv H, Ye X, Kong X, Li S. Cu-Catalyzed tandem N-arylation of phthalhydrazides with cyclic iodoniums to yield dihydrobenzo[c]cinnolines. Org Biomol Chem 2021; 18:4824-4830. [PMID: 32608470 DOI: 10.1039/d0ob00894j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Dihydrocinnolines have significant pharmacological properties. Herein, we investigate a Cu-catalyzed tandem N-arylation reaction of phthalhydrazides with cyclic iodonium salts to construct dihydrobenzo[c]cinnoline derivatives. Various iodonium salts, such as symmetrical, unsymmetrical, aryl-aryl, and aryl-heteroaryl ones, could react with phthalhydrazides smoothly and give the title products in moderate to high yields. Moreover, the -NH2 group, which has been diarylated by cyclic iodonium salts to form carbazoles in previous reports, is also well tolerated in this work.
Collapse
Affiliation(s)
- Rongrong Xie
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China.
| | - Hongxu Lv
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China.
| | - Xiuqing Ye
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China.
| | - Xiangfei Kong
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China.
| | - Shiqing Li
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materia, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, P. R. China.
| |
Collapse
|
23
|
Kervefors G, Kersting L, Olofsson B. Transition Metal-Free N-Arylation of Amino Acid Esters with Diaryliodonium Salts. Chemistry 2021; 27:5790-5795. [PMID: 33481266 PMCID: PMC8048889 DOI: 10.1002/chem.202005351] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Indexed: 12/31/2022]
Abstract
A transition metal-free approach for the N-arylation of amino acid derivatives has been developed. Key to this method is the use of unsymmetric diaryliodonium salts with anisyl ligands, which proved important to obtain high chemoselectivity and yields. The scope includes the transfer of both electron deficient, electron rich and sterically hindered aryl groups with a variety of different functional groups. Furthermore, a cyclic diaryliodonium salt was successfully employed in the arylation. The N-arylated products were obtained with retained enantiomeric excess.
Collapse
Affiliation(s)
- Gabriella Kervefors
- Department of Organic ChemistryArrhenius LaboratoryStockholm UniversitySE-106 91StockholmSweden
| | - Leonard Kersting
- Department of Organic ChemistryArrhenius LaboratoryStockholm UniversitySE-106 91StockholmSweden
| | - Berit Olofsson
- Department of Organic ChemistryArrhenius LaboratoryStockholm UniversitySE-106 91StockholmSweden
| |
Collapse
|
24
|
Heinen F, Reinhard DL, Engelage E, Huber SM. A Bidentate Iodine(III)-Based Halogen-Bond Donor as a Powerful Organocatalyst*. Angew Chem Int Ed Engl 2021; 60:5069-5073. [PMID: 33215804 PMCID: PMC7986438 DOI: 10.1002/anie.202013172] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Revised: 11/11/2020] [Indexed: 12/12/2022]
Abstract
In contrast to iodine(I)-based halogen bond donors, iodine(III)-derived ones have only been used as Lewis acidic organocatalysts in a handful of examples, and in all cases they acted in a monodentate fashion. Herein, we report the first application of a bidentate bis(iodolium) salt as organocatalyst in a Michael and a nitro-Michael addition reaction as well as in a Diels-Alder reaction that had not been activated by noncovalent organocatalysts before. In all cases, the performance of this bidentate XB donor distinctly surpassed the one of arguably the currently strongest iodine(I)-based organocatalyst. Bidentate coordination to the substrate was corroborated by a structural analysis and by DFT calculations of the transition states. Overall, the catalytic activity of the bis(iodolium) system approaches that of strong Lewis acids like BF3 .
Collapse
Affiliation(s)
- Flemming Heinen
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Dominik L. Reinhard
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| |
Collapse
|
25
|
Sun X, Guo XQ, Chen LM, Kang TR. Synthesis, Characterization of Spirocyclic λ 3 -Iodanes and Their Application to Prepare 4,1-Benzoxazepine-2,5-diones and 1,3-Diynes. Chemistry 2021; 27:4312-4316. [PMID: 33326645 DOI: 10.1002/chem.202005124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/15/2020] [Indexed: 11/10/2022]
Abstract
Herein, a [3+2] cycloaddition of aza-oxyallylic cations with ethynylbenziodoxolones for synthesis of new λ3 -iodanes containing spirocyclic 4-oxazolidinone has been developed. This cyclic λ3 -iodanes display stability in air and excellent solubility in organic solvent. Using them as substrate, both the 4,1-benzoxazepine-2,5-diones and symmetrical 1,3-diynes derivatives were afforded in high yield under copper(I)-catalyzed conditions.
Collapse
Affiliation(s)
- Xu Sun
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China.,Collaborative Innovation Center of Tissue Repair Material of, Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong City, Sichuan, 637002, P. R. China
| | - Xiao-Qiang Guo
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China
| | - Lian-Mei Chen
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China
| | - Tai-Ran Kang
- School of Food and Biological Engineering, Chengdu University, Chengdu City, 610106, P. R. China.,Collaborative Innovation Center of Tissue Repair Material of, Sichuan Province, College of Chemistry & Chemical Engineering, China West Normal University, Nanchong City, Sichuan, 637002, P. R. China
| |
Collapse
|
26
|
Zu B, Ke J, Guo Y, He C. Synthesis of Diverse Aryliodine(
III
) Reagents by Anodic Oxidation
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000501] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Bing Zu
- School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin Heilongjiang 150080 China
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Jie Ke
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Yonghong Guo
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Chuan He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| |
Collapse
|
27
|
Reinhard DL, Heinen F, Stoesser J, Engelage E, Huber SM. Tuning the Halogen Bonding Strength of Cyclic Diaryliodonium Salts. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202000221] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Dominik L. Reinhard
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 DE 44801 Bochum Germany
| | - Flemming Heinen
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 DE 44801 Bochum Germany
| | - Julian Stoesser
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 DE 44801 Bochum Germany
| | - Elric Engelage
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 DE 44801 Bochum Germany
| | - Stefan M. Huber
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 DE 44801 Bochum Germany
| |
Collapse
|
28
|
Heinen F, Reinhard DL, Engelage E, Huber SM. Ein zweizähniger Iod(III)‐basierter Halogenbrückendonor als leistungsfähiger Organokatalysator**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013172] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Flemming Heinen
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Dominik L. Reinhard
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Elric Engelage
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Stefan M. Huber
- Fakultät für Chemie und Biochemie Ruhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| |
Collapse
|
29
|
Bauer A, Maulide N. Recent discoveries on the structure of iodine(iii) reagents and their use in cross-nucleophile coupling. Chem Sci 2021; 12:853-864. [PMID: 34163852 PMCID: PMC8178994 DOI: 10.1039/d0sc03266b] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
This perspective article discusses structural features of iodine(iii) compounds as a prelude to presenting their use as umpolung reagents, in particular as pertains to their ability to promote the selective coupling of two nucleophilic species via 2e- oxidation.
Collapse
Affiliation(s)
- Adriano Bauer
- Institute of Organic Chemistry, University of Vienna Währinger Strasse 38 1090 Vienna Austria http://maulide.univie.ac.at
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna Währinger Strasse 38 1090 Vienna Austria http://maulide.univie.ac.at
| |
Collapse
|
30
|
Elsherbini M, Moran WJ. Scalable electrochemical synthesis of diaryliodonium salts. Org Biomol Chem 2021; 19:4706-4711. [PMID: 33960987 DOI: 10.1039/d1ob00457c] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cyclic and acyclic diaryliodonium are synthesised by anodic oxidation of iodobiaryls and iodoarene/arene mixtures, respectively, in a simple undivided electrolysis cell in MeCN-HFIP-TfOH without any added electrolyte salts. This atom efficient process does not require chemical oxidants and generates no chemical waste. More than 30 cyclic and acyclic diaryliodonium salts with different substitution patterns were prepared in very good to excellent yields. The reaction was scaled-up to 10 mmol scale giving more than four grams of dibenzo[b,d]iodol-5-ium trifluoromethanesulfonate (>95%) in less than three hours. The solvent mixture of the large-scale experiment was recovered (>97%) and recycled several times without significant reduction in yield.
Collapse
Affiliation(s)
- Mohamed Elsherbini
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| | - Wesley J Moran
- Department of Chemistry, University of Huddersfield, Queensgate, Huddersfield HD1 3DH, UK.
| |
Collapse
|
31
|
Declas N, Pisella G, Waser J. Vinylbenziodoxol(on)es: Synthetic Methods and Applications. Helv Chim Acta 2020. [DOI: 10.1002/hlca.202000191] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nina Declas
- Laboratory of Catalysis and Organic Synthesis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO Av. Forel 2 CH-1015 Lausanne Switzerland
| | - Guillaume Pisella
- Laboratory of Catalysis and Organic Synthesis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO Av. Forel 2 CH-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO Av. Forel 2 CH-1015 Lausanne Switzerland
| |
Collapse
|
32
|
Breton‐Patient C, Naud‐Martin D, Mahuteau‐Betzer F, Piguel S. Three‐Component C–H Bond Sulfonylation of Imidazoheterocycles by Visible‐Light Organophotoredox Catalysis. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001219] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Chloé Breton‐Patient
- CNRS UMR9187, Inserm U1196 Université Paris‐Saclay 91400 Orsay France
- CNRS UMR9187, Inserm U1196 Institut Curie, Université PSL 91400 Orsay France
| | | | | | - Sandrine Piguel
- CNRS UMR9187, Inserm U1196 Université Paris‐Saclay 91400 Orsay France
- CNRS UMR9187, Inserm U1196 Institut Curie, Université PSL 91400 Orsay France
| |
Collapse
|
33
|
Chen WW, Cunillera A, Chen D, Lethu S, López de Moragas A, Zhu J, Solà M, Cuenca AB, Shafir A. Iodane-Guided ortho C-H Allylation. Angew Chem Int Ed Engl 2020; 59:20201-20207. [PMID: 32721056 DOI: 10.1002/anie.202009369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Indexed: 01/05/2023]
Abstract
A metal-free C-H allylation strategy is described to access diverse functionalized ortho-allyl-iodoarenes. The method employs hypervalent (diacetoxy)iodoarenes and proceeds through the iodane-guided "iodonio-Claisen" allyl transfer. The use of allylsilanes bearing electron-withdrawing functional groups unlocks the functionalization of a broad range of substrates, including electron-neutral and electron-poor rings. The resulting ortho-allylated iodoarenes are versatile building blocks, with examples of downstream transformation including a concise synthesis of the experimental antimitotic core of Dosabulin. DFT calculations shed additional light on the reaction mechanism, with notable aspects including the aromatic character of the transition-state structure for the [3,3] sigmatropic rearrangement, as well as the highly stereoconvergent nature of the trans-product formation.
Collapse
Affiliation(s)
- Wei W Chen
- Dept. of Biological Chemistry, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), c/Jordi Girona 18-26, 08034, Barcelona, Spain.,Dept. of Organic and Pharmaceutical Chemistry, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain
| | - Anton Cunillera
- Dept. of Biological Chemistry, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), c/Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Dandan Chen
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, C/ M. Aurèlia Capmany, 69, 17003, Girona, Catalonia, Spain.,State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Sébastien Lethu
- Institute of Chemical Research of Catalonia, BIST, Avda. Països Catalans 16, 43007, Tarragona, Spain
| | - Albert López de Moragas
- Dept. of Organic and Pharmaceutical Chemistry, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Miquel Solà
- Institute of Computational Chemistry and Catalysis and Department of Chemistry, University of Girona, C/ M. Aurèlia Capmany, 69, 17003, Girona, Catalonia, Spain
| | - Ana B Cuenca
- Dept. of Organic and Pharmaceutical Chemistry, Institut Químic de Sarrià, Universitat Ramon Llull, Via Augusta 390, 08017, Barcelona, Spain
| | - Alexandr Shafir
- Dept. of Biological Chemistry, Centro de Innovación en Química Avanzada (ORFEO-CINQA), Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), c/Jordi Girona 18-26, 08034, Barcelona, Spain
| |
Collapse
|
34
|
Declas N, Waser J. Access to Vinyl Ethers and Ketones with Hypervalent Iodine Reagents as Oxy‐Allyl Cation Synthetic Equivalents. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006707] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nina Declas
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306 1015 Lausanne Switzerland
| |
Collapse
|
35
|
Declas N, Waser J. Access to Vinyl Ethers and Ketones with Hypervalent Iodine Reagents as Oxy-Allyl Cation Synthetic Equivalents. Angew Chem Int Ed Engl 2020; 59:18256-18260. [PMID: 32542955 DOI: 10.1002/anie.202006707] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/08/2020] [Indexed: 12/18/2022]
Abstract
We report an Umpolung strategy of enol ethers to generate oxy-allyl cation equivalents based on the use of hypervalent iodine reagents. Under mild basic conditions, the addition of nucleophiles to aryloxy-substituted vinylbenziodoxolone (VBX) reagents, easily available in two steps from silyl alkynes, resulted in the stereoselective formation of substituted aryl enol ethers. The reaction was most efficient with phenols as nucleophiles, but preliminary results were also achieved for C- and N- nucleophiles. In absence of external nucleophiles, the 2-iodobenzoate group of the reagent was transferred. The obtained aryl enol ethers could then be transformed into α-difunctionalized ketones by oxidation. The described "allyl cation"-like reactivity contrast with the well-established "vinyl-cation" behavior of alkenyl iodonium salts.
Collapse
Affiliation(s)
- Nina Declas
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| |
Collapse
|
36
|
Amos SGE, Nicolai S, Waser J. Photocatalytic Umpolung of N- and O-substituted alkenes for the synthesis of 1,2-amino alcohols and diols. Chem Sci 2020; 11:11274-11279. [PMID: 34094368 PMCID: PMC8162387 DOI: 10.1039/d0sc03655b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We report an organophotocatalytic 1,2-oxyalkynylation of ene-carbamates and enol ethers using Ethynyl BenziodoXolones (EBXs). 1-Alkynyl-1,2-amino alcohols and diols were obtained in up to 89% yield. Photocatalytic formation of radical cations led to Umpolung of the innate reactivity of the alkenes, enabling addition of a nucleophilic benzoate followed by radical alkynylation. Photocatalytic Umpolung with organic dyes overcoming the innate nucleophilicity of enecarbamates and enol ethers for oxyalkynylation with EBX reagents to access 1-alkynyl-1,2-amino alcohols and diols.![]()
Collapse
Affiliation(s)
- Stephanie G E Amos
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institut des Sciences et Ingénierie Chimique, Ecole Polytechnique Fédérale de Lausanne Ch-1015 Lausanne Switzerland
| |
Collapse
|
37
|
Boelke A, Kuczmera TJ, Caspers LD, Lork E, Nachtsheim BJ. Iodolopyrazolium Salts: Synthesis, Derivatizations, and Applications. Org Lett 2020; 22:7261-7266. [PMID: 32880463 DOI: 10.1021/acs.orglett.0c02593] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of iodolopyrazolium triflates via an oxidative cyclization of 3-(2-iodophenyl)-1H-pyrazoles is described. The reaction is characterized by a broad substrate scope, and various applications of these novel cyclic iodolium salts acting as useful synthetic intermediates are demonstrated, in particular in site-selective ring openings. This was finally applied to generate derivatives of the anti-inflammatory drug celecoxib. Their application as highly active halogen-bond donors is shown as well.
Collapse
Affiliation(s)
- Andreas Boelke
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Thomas J Kuczmera
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Lucien D Caspers
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| | - Enno Lork
- Institute for Inorganic Chemistry and Crystallography, University of Bremen, 28359 Bremen, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, 28359 Bremen, Germany
| |
Collapse
|
38
|
Chen WW, Cunillera A, Chen D, Lethu S, López de Moragas A, Zhu J, Solà M, Cuenca AB, Shafir A. Iodane‐Guided
ortho
C−H Allylation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202009369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei W. Chen
- Dept. of Biological Chemistry Centro de Innovación en Química Avanzada (ORFEO-CINQA) Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
- Dept. of Organic and Pharmaceutical Chemistry Institut Químic de Sarrià Universitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Anton Cunillera
- Dept. of Biological Chemistry Centro de Innovación en Química Avanzada (ORFEO-CINQA) Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
| | - Dandan Chen
- Institute of Computational Chemistry and Catalysis and Department of Chemistry University of Girona C/ M. Aurèlia Capmany, 69 17003 Girona Catalonia Spain
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Sébastien Lethu
- Institute of Chemical Research of Catalonia BIST Avda. Països Catalans 16 43007 Tarragona Spain
| | - Albert López de Moragas
- Dept. of Organic and Pharmaceutical Chemistry Institut Químic de Sarrià Universitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Jun Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
| | - Miquel Solà
- Institute of Computational Chemistry and Catalysis and Department of Chemistry University of Girona C/ M. Aurèlia Capmany, 69 17003 Girona Catalonia Spain
| | - Ana B. Cuenca
- Dept. of Organic and Pharmaceutical Chemistry Institut Químic de Sarrià Universitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Alexandr Shafir
- Dept. of Biological Chemistry Centro de Innovación en Química Avanzada (ORFEO-CINQA) Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
| |
Collapse
|
39
|
Vlasenko YА, Yusubov MS, Shafir A, Postnikov PS. Hypervalent iodine in the structure of N-heterocycles: synthesis, structure, and application in organic synthesis. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02742-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
40
|
Chen WW, Cuenca AB, Shafir A. The Power of Iodane‐Guided C−H Coupling: A Group‐Transfer Strategy in Which a Halogen Works for Its Money. Angew Chem Int Ed Engl 2020; 59:16294-16309. [DOI: 10.1002/anie.201908418] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 08/27/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Wei W. Chen
- Dept. of Biological Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA) Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
- Dept. of Organic and Pharmaceutical Chemistry Institut Químic de Sarrià Universitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Ana B. Cuenca
- Dept. of Organic and Pharmaceutical Chemistry Institut Químic de Sarrià Universitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Alexandr Shafir
- Dept. of Biological Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA) Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
| |
Collapse
|
41
|
Chen WW, Cuenca AB, Shafir A. The Power of Iodane‐Guided C−H Coupling: A Group‐Transfer Strategy in Which a Halogen Works for Its Money. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201908418] [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]
Affiliation(s)
- Wei W. Chen
- Dept. of Biological Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
- Dept. of Organic and Pharmaceutical ChemistryInstitut Químic de SarriàUniversitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Ana B. Cuenca
- Dept. of Organic and Pharmaceutical ChemistryInstitut Químic de SarriàUniversitat Ramon Llull Via Augusta 390 08017 Barcelona Spain
| | - Alexandr Shafir
- Dept. of Biological Chemistry and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Institute of Advanced Chemistry of Catalonia (IQAC-CSIC) c/Jordi Girona 18–26 08034 Barcelona Spain
| |
Collapse
|
42
|
Abazid AH, Clamor N, Nachtsheim BJ. An Enantioconvergent Benzylic Hydroxylation Using a Chiral Aryl Iodide in a Dual Activation Mode. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02321] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Ayham H. Abazid
- Institute of Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Nils Clamor
- Institute of Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Boris J. Nachtsheim
- Institute of Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| |
Collapse
|
43
|
Caspers LD, Spils J, Damrath M, Lork E, Nachtsheim BJ. One-Pot Synthesis and Conformational Analysis of Six-Membered Cyclic Iodonium Salts. J Org Chem 2020; 85:9161-9178. [PMID: 32539390 DOI: 10.1021/acs.joc.0c01125] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two one-pot procedures for the construction of carbon-bridged diaryliodonium triflates and tetrafluoroborates are described. Strong Brønsted acids enable the effective Friedel-Crafts alkylation with diversely substituted o-iodobenzyl alcohol derivatives, providing diphenylmethane scaffolds, which are subsequently oxidized and cyclized to the corresponding dibenzo[b,e]iodininium salts. Based on NMR investigations and density functional theory (DFT) calculations, we could verify the so-far-undescribed existence of two stable isomers in cyclic iodonium salts substituted with aliphatic side chains in the carbon bridge.
Collapse
Affiliation(s)
- Lucien D Caspers
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Julian Spils
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Mattis Damrath
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| | - Enno Lork
- Institute for Inorganic Chemistry and Crystallography, University of Bremen, 28359 Bremen, Germany
| | - Boris J Nachtsheim
- Institute for Organic and Analytical Chemistry, University of Bremen, Leobener Straße 7, 28359 Bremen, Germany
| |
Collapse
|
44
|
Chai J, Ding W, Wu J, Yoshikai N. Fluorobenziodoxole−BF
3
Reagent for Iodo(III)etherification of Alkynes in Ethereal Solvent. Chem Asian J 2020; 15:2166-2169. [DOI: 10.1002/asia.202000653] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Jinkui Chai
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
- College of ChemistryHenan Institute of Advanced TechnologyZhengzhou University Zhengzhou 450001 P.R. China
| | - Wei Ding
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| | - Junliang Wu
- College of ChemistryHenan Institute of Advanced TechnologyZhengzhou University Zhengzhou 450001 P.R. China
| | - Naohiko Yoshikai
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
| |
Collapse
|
45
|
Chen H, Wang L, Han J. Aryl radical-induced desulfonylative ipso-substitution of diaryliodonium salts: an efficient route to sterically hindered biarylamines. Chem Commun (Camb) 2020; 56:5697-5700. [PMID: 32319473 DOI: 10.1039/d0cc01766c] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
By using vicinal aryl sulfonamide substituted diaryliodonium salts, a cascade of desulfonylation/aryl migration was promoted by triethylamine in the synthesis of sterically hindered biarylamines, which operated via a radical-induced reaction pathway. The products were readily converted into a variety of important synthons. Furthermore, coupling reactions of N-methyl biarylamine and 1,6-dibromopyrene provided a potentially attractive molecule in OLEDs.
Collapse
Affiliation(s)
- Huangguan Chen
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Limin Wang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Jianwei Han
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| |
Collapse
|
46
|
Heinen F, Engelage E, Cramer CJ, Huber SM. Hypervalent Iodine(III) Compounds as Biaxial Halogen Bond Donors. J Am Chem Soc 2020; 142:8633-8640. [PMID: 32286829 PMCID: PMC7252947 DOI: 10.1021/jacs.9b13309] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
![]()
“Hypervalent”
iodine(III) derivatives have been established as powerful reagents
in organic transformations, but so far only a handful of studies have
addressed their potential use as halogen-bonding noncovalent Lewis
acids. In contrast to “classical” halogen-bond donors
based on iodine(I) compounds, iodine(III) salts feature two directional
electrophilic axes perpendicular to each other. Herein we present
the first systematic investigation on biaxial binding to such Lewis
acids in solution. To this end, hindered and unhindered iodolium species
were titrated with various substrates, including diesters and diamides,
via 1H NMR spectroscopy and isothermal titration calorimetry.
Clear evidence for biaxial binding was obtained in two model systems,
and the association strengths increased by 2 orders of magnitude.
These findings were corroborated by density functional theory calculations
(which reproduced the trend well but underestimated the absolute binding
constants) and a cocrystal featuring biaxial coordination of a diamide
to the unhindered iodolium compound.
Collapse
Affiliation(s)
- Flemming Heinen
- Fakultät für Chemie und Biochemie, Organische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150,44801 Bochum, Germany
| | - Elric Engelage
- Fakultät für Chemie und Biochemie, Organische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150,44801 Bochum, Germany
| | - Christopher J Cramer
- Department of Chemistry, Chemical Theory Center, and Minnesota Supercomputing Institute, University of Minnesota, 207 Pleasant Street SE, Minneapolis 55455-0431, Minnesota, United States
| | - Stefan M Huber
- Fakultät für Chemie und Biochemie, Organische Chemie I, Ruhr-Universität Bochum, Universitätsstraße 150,44801 Bochum, Germany
| |
Collapse
|
47
|
Diaryliodoniums Salts as Coupling Partners for Transition-Metal Catalyzed C- and N-Arylation of Heteroarenes. Catalysts 2020. [DOI: 10.3390/catal10050483] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Owing to the pioneering works performed on the metal-catalyzed sp2 C–H arylation of indole and pyrrole by Sanford and Gaunt, N– and C-arylation involving diaryliodonium salts offers an attractive complementary strategy for the late-stage diversification of heteroarenes. The main feature of this expanding methodology is the selective incorporation of structural diversity into complex molecules which usually have several C–H bonds and/or N–H bonds with high tolerance to functional groups and under mild conditions. This review summarizes the main recent achievements reported in transition-metal-catalyzed N– and/or C–H arylation of heteroarenes using acyclic diaryliodonium salts as coupling partners.
Collapse
|
48
|
Abazid AH, Nachtsheim BJ. A Triazole-Substituted Aryl Iodide with Omnipotent Reactivity in Enantioselective Oxidations. Angew Chem Int Ed Engl 2020; 59:1479-1484. [PMID: 31600009 PMCID: PMC7003988 DOI: 10.1002/anie.201912023] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 10/10/2019] [Indexed: 12/29/2022]
Abstract
A widely applicable triazole‐substituted chiral aryl iodide is described as catalyst for enantioselective oxidation reactions. The introduction of a substituent in ortho‐position to the iodide is key for its high reactivity and selectivity. Besides a robust and modular synthesis, the main advantage of this catalyst is the excellent performance in a plethora of mechanistically diverse enantioselective transformations, such as spirocyclizations, phenol dearomatizations, α‐oxygenations, and oxidative rearrangements. DFT‐calculations of in situ generated [hydroxy(tosyloxy)iodo]arene isomers give an initial rational for the observed reactivity.
Collapse
Affiliation(s)
- Ayham H Abazid
- Institut für Organische und Analytische Chemie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany
| | - Boris J Nachtsheim
- Institut für Organische und Analytische Chemie, Universität Bremen, Leobener Straße 7, 28359, Bremen, Germany
| |
Collapse
|
49
|
Yu Y, Lv H, Li S. The C-H functionalization of organic cations: an interesting and fresh journey. Org Biomol Chem 2020; 18:8810-8826. [PMID: 33112319 DOI: 10.1039/d0ob01453b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic ionic compounds, especially those with organic cations, are commonly applied in ionic liquids (ILs), organocatalysts, (a)NHC ligands, ion recognition, and optoelectronic materials. The direct C-H functionalization of organic cations offers valuable opportunities for the rapid assembly of diverse functionalized cations and for their further exploitation in material science applications. This review summarizes the substantial progress that has been made in the C-H functionalization of organic cations from the 1960s to May 2020, including transition metal-mediated/catalyzed C-H alkylation, arylation, and annulation, and photo-induced C-H functionalization. Substrate scopes, limitations, regio-/chemoselectivity, and reaction mechanisms are discussed. In addition, the applications of some new organic functional materials are briefly exemplified. This review also aims to serve as a reminder that much care should be taken when using organic ionic compounds as solvents, because they can behave as reactants that can break up desired coupling reactions.
Collapse
Affiliation(s)
- Yu Yu
- Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004, China.
| | | | | |
Collapse
|
50
|
Borrel J, Pisella G, Waser J. Copper-Catalyzed Oxyalkynylation of C–S Bonds in Thiiranes and Thiethanes with Hypervalent Iodine Reagents. Org Lett 2019; 22:422-427. [DOI: 10.1021/acs.orglett.9b04157] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Julien Borrel
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| | - Guillaume Pisella
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 1402, 1015 Lausanne, Switzerland
| |
Collapse
|