1
|
Groslambert L, Pale P, Mamane V. Telluronium-Catalyzed Halogenation Reactions: Chalcogen-Bond Activation of N-Halosuccinimides and Catalysis. Chemistry 2024; 30:e202401650. [PMID: 38785097 DOI: 10.1002/chem.202401650] [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: 04/26/2024] [Revised: 05/16/2024] [Accepted: 05/24/2024] [Indexed: 05/25/2024]
Abstract
The ability of triaryltelluronium salts to interact with N-halosuccinimides (NXS) through chalcogen bonding (ChB) in the solid state and in solution is demonstrated herein. Cocrystals of the triaryltelluronium bearing two CF3 electron-withdrawing groups per aryl ring with N-chloro-, N-bromo- and N-iodosuccinimide (respectively NCS, NBS and NIS) were analyzed by X-ray diffraction, evidencing a ChB between tellurium and the carbonyl group of NXS. This ChB was confirmed in solution by NMR spectroscopy, especially by 125Te NMR titration experiment, which allowed the determination of the association constant (Ka) between the telluronium and NBS. The so-obtained Ka value of 17.3±0.6 M-1 indicated a moderate interaction in solution because of the competitive role of the solvent. The strength of the Te⋅⋅⋅O ChB was however sufficient enough to promote the catalytic halofunctionalization of aromatics and of alkenes such as the intra- and intermolecular haloalkoxylation and haloesterification of alkenes.
Collapse
Affiliation(s)
- Loic Groslambert
- Institute of Chemistry of Strasbourg, UMR 7177, CNRS and Strasbourg University, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Patrick Pale
- Institute of Chemistry of Strasbourg, UMR 7177, CNRS and Strasbourg University, 4 rue Blaise Pascal, 67000, Strasbourg, France
| | - Victor Mamane
- Institute of Chemistry of Strasbourg, UMR 7177, CNRS and Strasbourg University, 4 rue Blaise Pascal, 67000, Strasbourg, France
| |
Collapse
|
2
|
Yin Y, Wang J, Li J. A concise and scalable chemoenzymatic synthesis of prostaglandins. Nat Commun 2024; 15:2523. [PMID: 38514642 PMCID: PMC10957970 DOI: 10.1038/s41467-024-46960-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 03/15/2024] [Indexed: 03/23/2024] Open
Abstract
Prostaglandins have garnered significant attention from synthetic chemists due to their exceptional biological activities. In this report, we present a concise chemoenzymatic synthesis method for several representative prostaglandins, achieved in 5 to 7 steps. Notably, the common intermediate bromohydrin, a radical equivalent of Corey lactone, is chemoenzymatically synthesized in only two steps, which allows us to complete the synthesis of prostaglandin F2α in five steps on a 10-gram scale. The chiral cyclopentane core is introduced with high enantioselectivity, while the lipid chains are sequentially incorporated through a cost-effective process involving bromohydrin formation, nickel-catalyzed cross-couplings, and Wittig reactions. This cost-efficient synthesis route for prostaglandins holds the potential to make prostaglandin-related drugs more affordable and facilitate easier access to their analogues.
Collapse
Affiliation(s)
- Yunpeng Yin
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, China
| | - Jinxin Wang
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, Shanghai, China
| | - Jian Li
- Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, China.
| |
Collapse
|
3
|
Akulov AA, Varaksin MV, Nelyubina AA, Tsmokaluk AN, Mazhukin DG, Tikhonov AY, Charushin VN, Chupakhin ON. Iodine-Catalyzed Radical C-H Amination of Nonaromatic Imidazole Oxides: Access to Cyclic α-Aminonitrones. J Org Chem 2024; 89:463-473. [PMID: 38092669 DOI: 10.1021/acs.joc.3c02230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A straightforward cross-dehydrogenative coupling approach to incorporate alicyclic amino residues into the structure of model cyclic aldonitrones, 2H-imidazole oxides, is reported. The elaborated C(sp2)-H functionalization is achieved by employing cyclic amines in the presence of the I2-tert-butyl hydroperoxide (TBHP) reagent system. As a result, a series of 19 novel heterocyclic derivatives were obtained in yields of up to 97%. A mechanistic study involving electron paramagnetic resonance spectroscopic experiments allowed the radical nature of the reaction to be confirmed. In particular, the envisioned mechanistic rationale comprises N-iodination of a cyclic amine, followed by N-I bond homolysis of the resulting intermediate and subsequent amination of the nitrone moiety via the newly generated nitrogen-centered radical.
Collapse
Affiliation(s)
- Alexey A Akulov
- Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation
| | - Mikhail V Varaksin
- Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation
- I.Ya. Postovsky Institute of Organic Synthesis, 22 S. Kovaleskoy Street, Ekaterinburg 620991, Russian Federation
| | - Anna A Nelyubina
- Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation
| | - Anton N Tsmokaluk
- Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation
| | - Dmitrii G Mazhukin
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Akademika Lavrentieva Avenue, Novosibirsk 630090, Russian Federation
| | - Alexsei Y Tikhonov
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, 9 Akademika Lavrentieva Avenue, Novosibirsk 630090, Russian Federation
| | - Valery N Charushin
- Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation
- I.Ya. Postovsky Institute of Organic Synthesis, 22 S. Kovaleskoy Street, Ekaterinburg 620991, Russian Federation
| | - Oleg N Chupakhin
- Ural Federal University, 19 Mira Street, Ekaterinburg 620002, Russian Federation
- I.Ya. Postovsky Institute of Organic Synthesis, 22 S. Kovaleskoy Street, Ekaterinburg 620991, Russian Federation
| |
Collapse
|
4
|
Li Y, Ge Y, Sun R, Yang X, Huang S, Dong H, Liu Y, Xue H, Ma X, Fu H, Chen Z. Balancing Activity and Stability in Halogen-Bonding Catalysis: Iodopyridinium-Catalyzed One-Pot Synthesis of 2,3-Dihydropyridinones. J Org Chem 2023; 88:11069-11082. [PMID: 37458502 DOI: 10.1021/acs.joc.3c01028] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
A one-pot cascade reaction for 2,3-dihydropyridinone synthesis was accomplished with 3-fluoro-2-iodo-1-methylpyridinium triflate as the halogen bond catalyst. The desired [4+2] cycloaddition products, bearing aryl, heteroaryl, alkyl, and alicyclic substituents, were successfully furnished in 28-99% yields. Mechanistic investigations proved that a strong halogen-bonding interaction forged between the iodopyridinium catalyst and imine intermediate was essential to dynamically masking the vulnerable C-I bond on the catalyst and accelerating the following aza-Diels-Alder reaction.
Collapse
Affiliation(s)
- Yi Li
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Yicen Ge
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Rui Sun
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Xiao Yang
- School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China
| | - Shipeng Huang
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Huajian Dong
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Yunyao Liu
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Haodan Xue
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Xiaoyan Ma
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, Chengdu, Sichuan 610064, China
| | - Zeqin Chen
- College of Materials, Chemistry and Chemical Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China
| |
Collapse
|
5
|
Wang Q, Mu J, Zeng J, Wan L, Zhong Y, Li Q, Li Y, Wang H, Chen F. Additive-controlled asymmetric iodocyclization enables enantioselective access to both α- and β-nucleosides. Nat Commun 2023; 14:138. [PMID: 36627283 PMCID: PMC9831021 DOI: 10.1038/s41467-022-35610-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 12/13/2022] [Indexed: 01/11/2023] Open
Abstract
β-Nucleosides and their analogs are dominant clinically-used antiviral and antitumor drugs. α-Nucleosides, the anomers of β-nucleosides, exist in nature and have significant potential as drugs or drug carriers. Currently, the most widely used methods for synthesizing β- and α-nucleosides are via N-glycosylation and pentose aminooxazoline, respectively. However, the stereoselectivities of both methods highly depend on the assisting group at the C2' position. Herein, we report an additive-controlled stereodivergent iodocyclization method for the selective synthesis of α- or β-nucleosides. The stereoselectivity at the anomeric carbon is controlled by the additive (NaI for β-nucleosides; PPh3S for α-nucleosides). A series of β- and α-nucleosides are prepared in high yields (up to 95%) and stereoselectivities (β:α up to 66:1, α:β up to 70:1). Notably, the introduced iodine at the C2' position of the nucleoside is readily functionalized, leading to multiple structurally diverse nucleoside analogs, including stavudine, an FDA-approved anti-HIV agent, and molnupiravir, an FDA-approved anti-SARS-CoV-2 agent.
Collapse
Affiliation(s)
- Qi Wang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jiayi Mu
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jie Zeng
- Pharmaceutical Research Institute, Wuhan Institute of Technology, 430205, Wuhan, China
| | - Linxi Wan
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yangyang Zhong
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Qiuhong Li
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Yitong Li
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Huijing Wang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Fener Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China. .,Engineering Center of Catalysis and synthesis for Chiral Molecules, Department of chemistry, Fudan University, Shanghai, 200433, China. .,Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, China.
| |
Collapse
|
6
|
Baker SI, Yaghoubi M, Bidwell SL, Pierce SL, Hratchian HP, Baxter RD. Enhanced Reactivity for Aromatic Bromination via Halogen Bonding with Lactic Acid Derivatives. J Org Chem 2022; 87:8492-8502. [PMID: 35709498 DOI: 10.1021/acs.joc.2c00611] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a new method for regioselective aromatic bromination using lactic acid derivatives as halogen bond acceptors with N-bromosuccinimide (NBS). Several structural analogues of lactic acid affect the efficiency of aromatic brominations, presumably via Lewis acid/base halogen-bonding interactions. Rate comparisons of aromatic brominations demonstrate the reactivity enhancement available via catalytic additives capable of halogen bonding. Computational results demonstrate that Lewis basic additives interact with NBS to increase the electropositive character of bromine prior to electrophilic transfer. An optimized procedure using catalytic mandelic acid under aqueous conditions at room temperature was developed to promote aromatic bromination on a variety of arene substrates with complete regioselectivity.
Collapse
Affiliation(s)
- Sarah I Baker
- Department of Chemistry and Biochemistry, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Mahshid Yaghoubi
- Department of Chemistry and Biochemistry, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Samantha L Bidwell
- Department of Chemistry and Biochemistry, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Savannah L Pierce
- Department of Chemistry and Biochemistry, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Hrant P Hratchian
- Department of Chemistry and Biochemistry, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Ryan D Baxter
- Department of Chemistry and Biochemistry, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| |
Collapse
|
7
|
Xu H, Hu L, Zhu G, Zhu Y, Wang Y, Wu ZG, Zi Y, Huang W. DABCO as a practical catalyst for aromatic halogenation with N-halosuccinimides. RSC Adv 2022; 12:7115-7119. [PMID: 35424677 PMCID: PMC8982236 DOI: 10.1039/d2ra00197g] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/23/2022] [Indexed: 11/21/2022] Open
Abstract
A simple and practical synthetic approach for synthesis of aromatic halides is developed. Simple Lewis base, DABCO, is used as the catalyst. This arene halogenation process proceedes conveniently and efficiently at ambient conditions, providing the desired products in good to excellent yields and selectivity.
Collapse
Affiliation(s)
- Haiyan Xu
- Nantong Normal College Nantong 226010 Jiangsu P. R. China
| | - Lanping Hu
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Guanghua Zhu
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Yueping Zhu
- Nantong Normal College Nantong 226010 Jiangsu P. R. China
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Zheng-Guang Wu
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - You Zi
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| | - Weichun Huang
- School of Chemistry and Chemical Engineering, Nantong University Nantong 226019 Jiangsu P. R. China
| |
Collapse
|
8
|
Huang S, Su X, Wu Y, Xiong XG, Liu Y. Promoting halogen-bonding catalyzed living radical polymerization through ion-pair strain. Chem Sci 2022; 13:11352-11359. [PMID: 36320570 PMCID: PMC9533465 DOI: 10.1039/d2sc04196k] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/12/2022] [Indexed: 11/25/2022] Open
Abstract
Discovering efficient catalysts is highly desired in expanding the application of halogen-bonding catalysis. We herein report our findings on applying triaminocyclopropenium (TAC) iodides as highly potent catalysts for halogen-bonding catalyzed living radical polymerization. Promoted by the unique effect of ion-pair strain between the TAC cation and the iodide anion, the TAC iodides showed high catalytic efficiency in the halogen-bonding catalysis toward radical generation, and surpassed the previously reported organic iodide catalysts. With the TAC iodide as catalyst, radical polymerization with a living feature was successfully realized, which shows general applicability with a variety of monomers and produced block copolymers. In addition, the TAC-iodides also showed promising feasibility in catalyzing the radical depolymerization of iodo-terminated polymethacrylates. Noteworthily, the catalytic capacity of the TAC iodides is demonstrated to be closely related to the electronic properties of the TAC cation, which offers a molecular platform for further catalyst screening and optimization. Promoted by the unique effect of ion-pair strain between the triaminocyclopropenium (TAC) cation and its iodide counter-anion, the TAC iodides showed high catalytic efficiency in the halogen-bonding catalysis toward radical polymerization.![]()
Collapse
Affiliation(s)
- Shiwen Huang
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Xinjian Su
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Yanzhen Wu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
| | - Xiao-Gen Xiong
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China
| | - Yiliu Liu
- South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou 510640, China
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices, South China University of Technology, Guangzhou 510640, China
| |
Collapse
|
9
|
Nandy A, Sekar G. KO tBu-Promoted Halogen-Bond-Assisted Intramolecular C-S Cross-Coupling of o-Iodothioanilides for the Synthesis of 2-Substituted Benzothiazoles. J Org Chem 2021; 86:15825-15834. [PMID: 34644084 DOI: 10.1021/acs.joc.1c02023] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An efficacious and mild KOtBu-promoted intramolecular C-S cross-coupling of ortho-iodothioanilides in conjunction with a catalytic quantity of phenanthroline as an additive has been described for the convenient synthesis of 2-substituted benzothiazoles. The methodology is suitable for attaining a wide variety of 2-alkyl- and 2-aryl-substituted benzothiazoles. Single-crystal XRD, DFT calculations, NMR, and UV studies suggest that halogen bonds between the units of ortho-iodothioanilides may assist in the electron transfer process.
Collapse
Affiliation(s)
- Anuradha Nandy
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600 036, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, Tamil Nadu 600 036, India
| |
Collapse
|
10
|
Frosch J, Koneczny M, Bannenberg T, Tamm M. Halogen Complexes of Anionic N-Heterocyclic Carbenes. Chemistry 2021; 27:4349-4363. [PMID: 33094865 PMCID: PMC7986712 DOI: 10.1002/chem.202004418] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Indexed: 12/12/2022]
Abstract
The lithium complexes [(WCA-NHC)Li(toluene)] of anionic N-heterocyclic carbenes with a weakly coordinating anionic borate moiety (WCA-NHC) reacted with iodine, bromine, or CCl4 to afford the zwitterionic 2-halogenoimidazolium borates (WCA-NHC)X (X=I, Br, Cl; WCA=B(C6 F5 )3 , B{3,5-C6 H3 (CF3 )2 }3 ; NHC=IDipp=1,3-bis(2,6-diisopropylphenyl)imidazolin-2-ylidene, or NHC=IMes=1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene). The iodine derivative (WCA-IDipp)I (WCA=B(C6 F5 )3 ) formed several complexes of the type (WCA-IDipp)I⋅L (L=C6 H5 Cl, C6 H5 Me, CH3 CN, THF, ONMe3 ), revealing its ability to act as an efficient halogen bond donor, which was also exploited for the preparation of hypervalent bis(carbene)iodine(I) complexes of the type [(WCA-IDipp)I(NHC)] and [PPh4 ][(WCA-IDipp)I(WCA-NHC)] (NHC=IDipp, IMes). The corresponding bromine complex [PPh4 ][(WCA-IDipp)2 Br] was isolated as a rare example of a hypervalent (10-Br-2) system. DFT calculations reveal that London dispersion contributes significantly to the stability of the bis(carbene)halogen(I) complexes, and the bonding was further analyzed by quantum theory of atoms in molecules (QTAIM) analysis.
Collapse
Affiliation(s)
- Jenni Frosch
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Marvin Koneczny
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Thomas Bannenberg
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Matthias Tamm
- Institut für Anorganische und Analytische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| |
Collapse
|
11
|
Sutar RL, Erochok N, Huber SM. Mukaiyama aldol reaction catalyzed by (benz)imidazolium-based halogen bond donors. Org Biomol Chem 2021; 19:770-774. [PMID: 33432958 DOI: 10.1039/d0ob02503h] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of cationic monodentate and bidentate iodo(benz)imidazolium-based halogen bond (XB) donors were employed as catalysts in a Mukaiyama aldol reaction. While 5 mol% of a monodentate variant showed noticeable activity, a syn-preorganized bidentate XB donor provided a strong performance even with 0.5 mol% loading. In contrast to the very active BArF4 salts, PF6 or OTf salts were either inactive or showed background reaction through Lewis base catalysis. Repetition experiments clearly ruled out a potential hidden catalysis by elemental iodine and demonstrated the stability of our catalyst over three consecutive cycles.
Collapse
Affiliation(s)
- Revannath L Sutar
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
| | - Nikita Erochok
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
| | - Stefan M Huber
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany.
| |
Collapse
|
12
|
Nandy A, Kazi I, Guha S, Sekar G. Visible-Light-Driven Halogen-Bond-Assisted Direct Synthesis of Heteroaryl Thioethers Using Transition-Metal-Free One-Pot C–I Bond Formation/C–S Cross-Coupling Reaction. J Org Chem 2021; 86:2570-2581. [DOI: 10.1021/acs.joc.0c02672] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Anuradha Nandy
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036 Tamil Nadu, India
| | - Imran Kazi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036 Tamil Nadu, India
| | - Somraj Guha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036 Tamil Nadu, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600 036 Tamil Nadu, India
| |
Collapse
|
13
|
Dinh AN, Maddox SM, Vaidya SD, Saputra MA, Nalbandian CJ, Gustafson JL. Catalyst-Controlled Regioselective Chlorination of Phenols and Anilines through a Lewis Basic Selenoether Catalyst. J Org Chem 2020; 85:13895-13905. [PMID: 33044067 DOI: 10.1021/acs.joc.0c01917] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report a highly efficient ortho-selective electrophilic chlorination of phenols utilizing a Lewis basic selenoether catalyst. The selenoether catalyst resulted in comparable selectivities to our previously reported bis-thiourea ortho-selective catalyst, with a catalyst loading as low as 1%. The new catalytic system also allowed us to extend this chemistry to obtain excellent ortho-selectivities for unprotected anilines. The selectivities of this reaction are up to >20:1 ortho/para, while the innate selectivities for phenols and anilines are approximately 1:4 ortho/para. A series of preliminary studies revealed that the substrates require a hydrogen-bonding moiety for selectivity.
Collapse
Affiliation(s)
- Andrew N Dinh
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Sean M Maddox
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Sagar D Vaidya
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Mirza A Saputra
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Christopher J Nalbandian
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| | - Jeffrey L Gustafson
- Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182, United States
| |
Collapse
|
14
|
Qu Z, Zhu H, Grimme S. Mechanistic Insights for Aniline‐Catalyzed Halogenation Reactions. ChemCatChem 2020. [DOI: 10.1002/cctc.202000981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zheng‐Wang Qu
- Mulliken Center for Theoretical Chemistry University of Bonn Beringstr. 4 53115 Bonn Germany
| | - Hui Zhu
- Mulliken Center for Theoretical Chemistry University of Bonn Beringstr. 4 53115 Bonn Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry University of Bonn Beringstr. 4 53115 Bonn Germany
| |
Collapse
|
15
|
Bian HL, Tang SZ, Chen ME, Zhang XM, Lv JW, Chen XW, Qi FM, Chen SW, Zhang FM. Transition-Metal-Free Site-Selective γ-C(sp 2)-H Monoiodination of Arenes Directed by an Aliphatic Keto Group. Org Lett 2020; 22:5314-5319. [PMID: 32589432 DOI: 10.1021/acs.orglett.0c01466] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A general γ-C(sp2)-H iodination method directed by an aliphatic keto group has been developed under transition-metal-free conditions for the first time, generating iodoarenes in good to excellent yields with excellent site selectivity. This protocol features a wide range of aryl-substituted ketones, short reaction times, mild reaction conditions, and scalable synthetic procedures. A possible reaction mechanism was also proposed based on several control experiments.
Collapse
Affiliation(s)
- Hong-Li Bian
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.,School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Shi-Zhong Tang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Meng-En Chen
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Jian-Wei Lv
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Xiao-Wei Chen
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Feng-Ming Qi
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| | - Shi-Wu Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
16
|
Bol’shakov OI, Yushina ID, Stash AI, Aysin RR, Bartashevich EV, Rakitin OA. Structure and properties of 4-phenyl-5H-1,2,3-dithiazole-5-thione polyiodide with S−I+−S bridged complex. Struct Chem 2020. [DOI: 10.1007/s11224-020-01584-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
17
|
Sutar RL, Engelage E, Stoll R, Huber SM. Bidentate Chiral Bis(imidazolium)-Based Halogen-Bond Donors: Synthesis and Applications in Enantioselective Recognition and Catalysis. Angew Chem Int Ed Engl 2020; 59:6806-6810. [PMID: 32045504 PMCID: PMC7187470 DOI: 10.1002/anie.201915931] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Indexed: 01/13/2023]
Abstract
Even though halogen bonding-the noncovalent interaction between electrophilic halogen substituents and Lewis bases-has now been established in molecular recognition and catalysis, its use in enantioselective processes is still very rarely explored. Herein, we present the synthesis of chiral bidentate halogen-bond donors based on two iodoimidazolium units with rigidly attached chiral sidearms. With these Lewis acids, chiral recognition of a racemic diamine is achieved in NMR studies. DFT calculations support a 1:1 interaction of the halogen-bond donor with both enantiomers and indicate that the chiral recognition is based on a different spatial orientation of the Lewis bases in the halogen-bonded complexes. In addition, moderate enantioselectivity is achieved in a Mukaiyama aldol reaction with a preorganized variant of the chiral halogen-bond donor. This represents the first case in which asymmetric induction was realized with a pure halogen-bond donor lacking any additional active functional groups.
Collapse
Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Raphael Stoll
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität BochumUniversitätsstrasse 15044801BochumGermany
| |
Collapse
|
18
|
Sutar RL, Engelage E, Stoll R, Huber SM. Zweizähnige chirale Bis(imidazolium)‐basierte Halogenbrückendonoren: Synthese und Anwendungen in enantioselektiver Erkennung und Katalyse. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201915931] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Elric Engelage
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Raphael Stoll
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| | - Stefan M. Huber
- Fakultät für Chemie und BiochemieRuhr-Universität Bochum Universitätsstraße 150 44801 Bochum Deutschland
| |
Collapse
|
19
|
Sundaravelu N, Guha S, Sekar G. Iodonium Ion—Catalyzed Domino Synthesis of Z-Selective α,β-Diphenylthio Enones from Easily Accessible Secondary Alcohols. J Org Chem 2020; 85:5895-5906. [PMID: 32272834 DOI: 10.1021/acs.joc.0c00183] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nallappan Sundaravelu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036 Tamil Nadu, India
| | - Somraj Guha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036 Tamil Nadu, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036 Tamil Nadu, India
| |
Collapse
|
20
|
Application of Halogen Bonding to Organocatalysis: A Theoretical Perspective. Molecules 2020; 25:molecules25051045. [PMID: 32110944 PMCID: PMC7179134 DOI: 10.3390/molecules25051045] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/23/2020] [Accepted: 02/24/2020] [Indexed: 11/18/2022] Open
Abstract
The strong, specific, and directional halogen bond (XB) is an ideal supramolecular synthon in crystal engineering, as well as rational catalyst and drug design. These attributes attracted strong growing interest in halogen bonding in the past decade and led to a wide range of applications in materials, biological, and catalysis applications. Recently, various research groups exploited the XB mode of activation in designing halogen-based Lewis acids in effecting organic transformation, and there is continual growth in this promising area. In addition to the rapid advancements in methodology development, computational investigations are well suited for mechanistic understanding, rational XB catalyst design, and the study of intermediates that are unstable when observed experimentally. In this review, we highlight recent computational studies of XB organocatalytic reactions, which provide valuable insights into the XB mode of activation, competing reaction pathways, effects of solvent and counterions, and design of novel XB catalysts.
Collapse
|
21
|
Nishii Y, Ikeda M, Hayashi Y, Kawauchi S, Miura M. Triptycenyl Sulfide: A Practical and Active Catalyst for Electrophilic Aromatic Halogenation Using N-Halosuccinimides. J Am Chem Soc 2020; 142:1621-1629. [PMID: 31868360 DOI: 10.1021/jacs.9b12672] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A Lewis base catalyst Trip-SMe (Trip = triptycenyl) for electrophilic aromatic halogenation using N-halosuccinimides (NXS) is introduced. In the presence of an appropriate activator (as a noncoordinating-anion source), a series of unactivated aromatic compounds were halogenated at ambient temperature using NXS. This catalytic system was applicable to transformations that are currently unachievable except for the use of Br2 or Cl2: e.g., multihalogenation of naphthalene, regioselective bromination of BINOL, etc. Controlled experiments revealed that the triptycenyl substituent exerts a crucial role for the catalytic activity, and kinetic experiments implied the occurrence of a sulfonium salt [Trip-S(Me)Br][SbF6] as an active species. Compared to simple dialkyl sulfides, Trip-SMe exhibited a significant charge-separated ion pair character within the halonium complex whose structural information was obtained by the single-crystal X-ray analysis. A preliminary computational study disclosed that the π system of the triptycenyl functionality is a key motif to consolidate the enhancement of electrophilicity.
Collapse
Affiliation(s)
- Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan
| | - Mitsuhiro Ikeda
- Department of Applied Chemistry, Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan
| | - Yoshihiro Hayashi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , 2-12-1-E4-6 Ookayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Susumu Kawauchi
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology , Tokyo Institute of Technology , 2-12-1-E4-6 Ookayama , Meguro-ku , Tokyo 152-8552 , Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering , Osaka University , Suita , Osaka 565-0871 , Japan
| |
Collapse
|
22
|
Abstract
Halonium ions are particularly strong halogen bond donors, and are accordingly valuable tools for a variety of fields, such as supramolecular and synthetic organic chemistry.
Collapse
Affiliation(s)
- Lotta Turunen
- Department of Chemistry – BMC
- Uppsala University
- SE-751 23 Uppsala
- Sweden
| | - Máté Erdélyi
- Department of Chemistry – BMC
- Uppsala University
- SE-751 23 Uppsala
- Sweden
| |
Collapse
|
23
|
Bamberger J, Ostler F, Mancheño OG. Frontiers in Halogen and Chalcogen-Bond Donor Organocatalysis. ChemCatChem 2019; 11:5198-5211. [PMID: 31894187 PMCID: PMC6919929 DOI: 10.1002/cctc.201901215] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Indexed: 01/01/2023]
Abstract
Non-covalent molecular interactions on the basis of halogen and chalcogen bonding represent a promising, powerful catalytic activation mode. However, these "unusual" non-covalent interactions are typically employed in the solid state and scarcely exploited in catalysis. In recent years, an increased interest in halogen and chalcogen bonding has been awaken, as they provide profound characteristics that make them an appealing alternative to the well-explored hydrogen bonding. Being particularly relevant in the binding of "soft" substrates, the similar strength to hydrogen bonding interactions and its higher directionality allows for solution-phase applications with halogen and chalcogen bonding as the key interaction. In this mini-review, the special features, state-of-the-art and key examples of these so-called σ-hole interactions in the field of organocatalysis are presented.
Collapse
Affiliation(s)
- Julia Bamberger
- Organic Chemistry InstituteMünster UniversityCorrensstraße 40MünsterD-48149Germany
| | - Florian Ostler
- Organic Chemistry InstituteMünster UniversityCorrensstraße 40MünsterD-48149Germany
| | - Olga García Mancheño
- Organic Chemistry InstituteMünster UniversityCorrensstraße 40MünsterD-48149Germany
| |
Collapse
|
24
|
Affiliation(s)
- Revannath L. Sutar
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, Bochum, 44801, Germany
| | - Stefan M. Huber
- Fakultät für Chemie und Biochemie, Ruhr-Universität Bochum, Universitätsstraße 150, Bochum, 44801, Germany
| |
Collapse
|
25
|
Wang Z, Yu Z, Yao Y, Zhang Y, Xiao X, Wang B. A practical synthesis of β-carbolines by tetra-n-butylammonium bromide (TBAB)-mediated cycloaromatization reaction of aldehydes with tryptophan derivatives. CHINESE CHEM LETT 2019. [DOI: 10.1016/j.cclet.2019.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
26
|
Lee HE, Lee MJ, Park JK. Rapid Base‐ and Metal‐Free Oxidative C‐H Cyclization for the Synthesis of Benzo[4,5]imidazo[1,2‐
a
]pyridine Derivatives. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900347] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Hae Eun Lee
- Department of Chemistry and Chemistry Institute of Functional MaterialsPusan National University 63 Beon-gil 2, Busandaehag-ro, Geumjeoung-gu Busan 46241 Republic of Korea
| | - Mi Jung Lee
- Department of Chemistry and Chemistry Institute of Functional MaterialsPusan National University 63 Beon-gil 2, Busandaehag-ro, Geumjeoung-gu Busan 46241 Republic of Korea
| | - Jin Kyoon Park
- Department of Chemistry and Chemistry Institute of Functional MaterialsPusan National University 63 Beon-gil 2, Busandaehag-ro, Geumjeoung-gu Busan 46241 Republic of Korea
| |
Collapse
|
27
|
Bal A, Maiti S, Mal P. Steric and Electronic Effect on C
2
‐H Arylation of Sulfonamides. ChemistrySelect 2019. [DOI: 10.1002/slct.201900944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ankita Bal
- School of Chemical SciencesNational Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur Via Jatni, District Khurda Odisha 752050, India
| | - Saikat Maiti
- School of Chemical SciencesNational Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur Via Jatni, District Khurda Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical SciencesNational Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur Via Jatni, District Khurda Odisha 752050, India
| |
Collapse
|
28
|
Kazi I, Guha S, Sekar G. Halogen Bond-Assisted Electron-Catalyzed Atom Economic Iodination of Heteroarenes at Room Temperature. J Org Chem 2019; 84:6642-6654. [DOI: 10.1021/acs.joc.9b00174] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Imran Kazi
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Somraj Guha
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| | - Govindasamy Sekar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India
| |
Collapse
|
29
|
Hirose Y, Yamazaki M, Nogata M, Nakamura A, Maegawa T. Aromatic Halogenation Using N-Halosuccinimide and PhSSiMe3 or PhSSPh. J Org Chem 2019; 84:7405-7410. [DOI: 10.1021/acs.joc.9b00817] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuuka Hirose
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Mirai Yamazaki
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Misa Nogata
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Akira Nakamura
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tomohiro Maegawa
- School of Pharmaceutical Sciences, Kindai University, Higashi-Osaka, Osaka 577-8502, Japan
| |
Collapse
|
30
|
Iida K, Ishida S, Watanabe T, Arai T. Disulfide-Catalyzed Iodination of Electron-Rich Aromatic Compounds. J Org Chem 2019; 84:7411-7417. [DOI: 10.1021/acs.joc.9b00769] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Keisuke Iida
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), and Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Shunsuke Ishida
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), and Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| | - Takamichi Watanabe
- Nippoh Chemicals Co., Ltd. Neo Kawai Building, 8-15,4-Chome, Nihonbashi-Honchou,
Chuo-Ku, Tokyo 103-0023, Japan
| | - Takayoshi Arai
- Soft Molecular Activation Research Center (SMARC), Chiba Iodine Resource Innovation Center (CIRIC), Molecular Chirality Research Center (MCRC), and Department of Chemistry, Graduate School of Science, Chiba University, 1-33 Yayoi, Inage, Chiba 263-8522, Japan
| |
Collapse
|
31
|
Hua AM, Bidwell SL, Baker SI, Hratchian HP, Baxter RD. Experimental and Theoretical Evidence for Nitrogen–Fluorine Halogen Bonding in Silver-Initiated Radical Fluorinations. ACS Catal 2019. [DOI: 10.1021/acscatal.9b00623] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alyssa M. Hua
- Department of Chemistry and Chemical Biology, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Samantha L. Bidwell
- Department of Chemistry and Chemical Biology, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Sarah I. Baker
- Department of Chemistry and Chemical Biology, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Hrant P. Hratchian
- Department of Chemistry and Chemical Biology, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| | - Ryan D. Baxter
- Department of Chemistry and Chemical Biology, University of California, 5200 N. Lake Road, Merced, California 95343, United States
| |
Collapse
|
32
|
Kazi I, Sekar G. An efficient synthesis of benzothiazole using tetrabromomethane as a halogen bond donor catalyst. Org Biomol Chem 2019; 17:9743-9756. [DOI: 10.1039/c9ob02125f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A CBr4 catalyzed simple, mild, and efficient protocol has been developed for the synthesis of 2-substituted benzothiazole from 2-aminothiophenols and N-methylthioamides under solvent free conditions.
Collapse
Affiliation(s)
- Imran Kazi
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai
- India
| | - Govindasamy Sekar
- Department of Chemistry
- Indian Institute of Technology Madras
- Chennai
- India
| |
Collapse
|
33
|
Pramanik M, Choudhuri K, Mal P. N
-Iodosuccinimide as Bifunctional Reagent in (E
)-Selective C(sp2
)−H Sulfonylation of Styrenes. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800644] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Milan Pramanik
- Milan Pramanik, Khokan Choudhuri, Dr. Prasenjit Mal, School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda; Odisha 752050 India
| | - Khokan Choudhuri
- Milan Pramanik, Khokan Choudhuri, Dr. Prasenjit Mal, School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda; Odisha 752050 India
| | - Prasenjit Mal
- Milan Pramanik, Khokan Choudhuri, Dr. Prasenjit Mal, School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda; Odisha 752050 India
| |
Collapse
|
34
|
Metal‐Free Halogen(I) Catalysts for the Oxidation of Aryl(heteroaryl)methanes to Ketones or Esters: Selectivity Control by Halogen Bonding. Chemistry 2018; 24:14171-14182. [DOI: 10.1002/chem.201801717] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Indexed: 12/17/2022]
|
35
|
Breugst M, von der Heiden D. Mechanisms in Iodine Catalysis. Chemistry 2018; 24:9187-9199. [DOI: 10.1002/chem.201706136] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Martin Breugst
- Department of Chemistry; University of Cologne; Greinstraße 4 50939 Köln Germany
| | | |
Collapse
|
36
|
Maiti S, Alam T, Mal P. Soft-Hard Acid-Base-Controlled C−H Trifluoroethoxylation and Trideuteriomethoxylation of Anilides. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Saikat Maiti
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur; Via Jatni District Khurda Odisha 752050 India
| | - Toufique Alam
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur; Via Jatni District Khurda Odisha 752050 India
| | - Prasenjit Mal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur; Via Jatni District Khurda Odisha 752050 India
| |
Collapse
|
37
|
Maiti S, Mal P. Soft–Hard Acid/Base-Controlled, Oxidative, N-Selective Arylation of Sulfonanilides via a Nitrenium Ion. J Org Chem 2018; 83:1340-1347. [DOI: 10.1021/acs.joc.7b02841] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Saikat Maiti
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| |
Collapse
|