1
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Bugaenko DI, Tikhanova OA, Andreychev VV, Karchava AV. Arylation of Diethyl Acetamidomalonate with Diaryliodonium Salts En Route to α-Arylglycines. J Org Chem 2024; 89:9923-9928. [PMID: 38950106 DOI: 10.1021/acs.joc.4c00768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Diethyl acetamidomalonate (DEAM) has been widely used for the synthesis of α-amino acids via C-alkylation under basic conditions followed by hydrolysis/decarboxylation. In contrast, the C-arylation of this reagent remains undeveloped. Herein, we report a novel strategy for the synthesis of racemic α-arylglycines based on the selective arylation of DEAM with diaryliodonium salts under mild, transition metal-free conditions. The reaction features good functional group tolerance and easy scalability and is applicable to the chemoselective C-H-modification of arenes including approved drugs, thus enabling a straightforward approach to complex α-arylglycines that would be challenging to make otherwise.
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Affiliation(s)
- Dmitry I Bugaenko
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
| | - Olga A Tikhanova
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
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2
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Galicia J, McDonald NR, Bennett CW, He J, Glossbrenner MD, Romero EA. Exogenous photocatalyst-free aryl radical generation from diaryliodonium salts and use in metal-catalyzed C-H arylation. Chem Commun (Camb) 2024; 60:6929-6932. [PMID: 38884327 DOI: 10.1039/d4cc01259c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2024]
Abstract
We demonstrate (1) detectable halogen bonding is not critical for enabling light-driven radical generation from diaryliodonium salts and (2) radicals generated by this route can be captured by transition-metals for C-H arylation reactions. These results are the first step toward developing new metal-catalyzed aryl radical couplings without exogenous photocatalysts.
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Affiliation(s)
- Jonathan Galicia
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0309, USA.
| | - Nicholas R McDonald
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0309, USA.
| | - Christopher W Bennett
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0309, USA.
| | - Jiajun He
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0309, USA.
| | - Mark D Glossbrenner
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0309, USA.
| | - Erik A Romero
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, CA 92093-0309, USA.
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3
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Bugaenko DI, Malashchenko NA, Kopytov SO, Lukonina NS, Karchava AV. (Indol-3-yl)(DMIX)Iodonium Salts: Novel Electrophilic Indole Reagents. Org Lett 2024; 26:3189-3194. [PMID: 38587312 DOI: 10.1021/acs.orglett.4c00797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
A new umpolung approach to the C3-H functionalization of indoles with diverse nucleophiles based on the intermediate formation of I(III) reagents is described. The 3,5-dimethylisoxazol-4-yl auxiliary allows for selective indole transfer under catalyst-free conditions, which was impossible using previously reported reagents. Combining the mildness of transition-metal-free conditions and the high reactivity of hypervalent iodine reagents, this protocol tolerates various functional groups and provides access to indoles that are difficult to prepare conventionally.
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Affiliation(s)
- Dmitry I Bugaenko
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
| | | | - Sergei O Kopytov
- Department of Chemistry, Moscow State University, Moscow 119991, Russia
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4
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Wu X, Li Y, Chen M, He FS, Wu J. Metal-Free Chemoselective S-Arylation of Sulfenamides To Access Sulfilimines. J Org Chem 2023. [PMID: 37327035 DOI: 10.1021/acs.joc.3c00961] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A novel and efficient S-arylation of sulfenamides with diaryliodonium salts for the synthesis of sulfilimines is developed. The reaction proceeds smoothly under transition-metal-free and air conditions, giving rapid access to sulfilimines in good to excellent yields via selective S-C bond formation. This protocol is scalable and exhibits a broad substrate scope, good functional group tolerance, and excellent chemoselectivity.
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Affiliation(s)
- Xianda Wu
- Jiangxi Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, China
- School of Pharmaceutical and Chemical Engineering and Institute for Advanced Studies, Taizhou University, Taizhou, Zhejiang 3180000, China
| | - Yuqing Li
- School of Pharmaceutical and Chemical Engineering and Institute for Advanced Studies, Taizhou University, Taizhou, Zhejiang 3180000, China
| | - Minghong Chen
- School of Pharmaceutical and Chemical Engineering and Institute for Advanced Studies, Taizhou University, Taizhou, Zhejiang 3180000, China
| | - Fu-Sheng He
- School of Pharmaceutical and Chemical Engineering and Institute for Advanced Studies, Taizhou University, Taizhou, Zhejiang 3180000, China
| | - Jie Wu
- School of Pharmaceutical and Chemical Engineering and Institute for Advanced Studies, Taizhou University, Taizhou, Zhejiang 3180000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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5
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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.
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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
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6
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Yang T, Li X, Deng S, Qi X, Cong H, Cheng HG, Shi L, Zhou Q, Zhuang L. From N-H Nitration to Controllable Aromatic Mononitration and Dinitration-The Discovery of a Versatile and Powerful N-Nitropyrazole Nitrating Reagent. JACS AU 2022; 2:2152-2161. [PMID: 36186553 PMCID: PMC9516713 DOI: 10.1021/jacsau.2c00413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/16/2022] [Accepted: 08/17/2022] [Indexed: 06/16/2023]
Abstract
Nitroaromatics are tremendously valuable organic compounds with a long history of being used as pharmaceuticals, agrochemicals, and explosives as well as vital intermediates to a wide variety of chemicals. Consequently, the exploration of aromatic nitration has become an important endeavor in both academia and industry. Herein, we report the identification of a powerful nitrating reagent, 5-methyl-1,3-dinitro-1H-pyrazole, from the N-nitro-type reagent library constructed using a practical N-H nitration method. This nitrating reagent behaves as a controllable source of the nitronium ion, enabling mild and scalable nitration of a broad range of (hetero)arenes with good functional group tolerance. Of note, our nitration method could be controlled by manipulating the reaction conditions to furnish mononitrated or dinitrated product selectively. The value of this method in medicinal chemistry has been well established by its efficient late-stage C-H nitration of complex biorelevant molecules. Density functional theory (DFT) calculations and preliminary mechanistic studies reveal that the powerfulness and versatility of this nitrating reagent are due to the synergistic "nitro effect" and "methyl effect".
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Affiliation(s)
- Tao Yang
- The
Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Xiaoqian Li
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Shuang Deng
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Xiaotian Qi
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Hengjiang Cong
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Hong-Gang Cheng
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
| | - Liangwei Shi
- CAS
Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Qianghui Zhou
- The
Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan 430072, China
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
- TaiKang
Center for Life and Medical Sciences, Wuhan
University, 430072 Wuhan, China
- State
Key Laboratory of Bio-Organic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy
of Sciences, 345 Lingling
Road, Shanghai 200032, China
| | - Lin Zhuang
- The
Institute for Advanced Studies, Wuhan University, 299 Bayi Road, Wuhan 430072, China
- Sauvage
Center for Molecular Sciences, Engineering Research Center of Organosilicon
Compounds & Materials (Ministry of Education), Hubei Key Lab on
Organic and Polymeric OptoElectronic Materials, College of Chemistry
and Molecular Sciences, Wuhan University, 299 Bayi Road, Wuhan 430072, China
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7
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Gong B, Zhu H, Yang L, Wang H, Fan Q, Xie Z, Le Z. Base-promoted synthesis of diarylsulfones from sulfonyl hydrazines and diaryliodonium salts. Org Biomol Chem 2022; 20:3501-3505. [PMID: 35420103 DOI: 10.1039/d2ob00389a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient and concise method for the synthesis of diverse substituted sulfones was developed with high selectivity. Using n-PrOH as the solvent, diaryl sulfones are formed even on a gram scale via metal-free coupling from sulfonyl hydrazines with symmetrical or unsymmetrical diaryliodonium salts.
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Affiliation(s)
- Bozhen Gong
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China.
| | - Haibo Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China.
| | - Liu Yang
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China.
| | - Haifeng Wang
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China. .,Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan 430205, China
| | - Qiangwen Fan
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China. .,Jiangxi Key Laboratory for Mass Spectrometry and Instrumentation, East China University of Technology, Nanchang, 330013, China
| | - Zongbo Xie
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China.
| | - Zhanggao Le
- Jiangxi Province Key Laboratory of Synthetic Chemistry, School of Chemistry, Biology and Material Science, East China University of Technology, 330013, Nanchang, China.
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8
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Bera SK, Mal P. Regiodivergent C-N Coupling of Quinazolinones Controlled by the Dipole Moments of Tautomers. Org Lett 2022; 24:3144-3148. [PMID: 35446038 DOI: 10.1021/acs.orglett.2c00847] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Herein, we report that the dipole moments of tautomers can be the controlling factor for regiodivergent synthesis of either 14H-quinazolino[3,2-f]phenanthridin-14-ones or 6H-quinazolino[1,2-f]phenanthridin-6-ones, selectively, from unmasked 2-([1,1'-biphenyl]-2-yl)quinazolin-4(3H)-one. An intramolecular C(sp2)-NH coupling reaction mediated by PhI(OCOOCF3)2 could lead to two different regioisomers selectively at different temperatures when the dielectric constants of solvents like hexafluoroisopropanol and trifluoroacetic acid matched with the tautomer's dipole moments.
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Affiliation(s)
- Shyamal Kanti Bera
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhabha National Institute, 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), An OCC of Homi Bhabha National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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9
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Patra S, Mosiagin I, Katayev D, Giri R. Organic Nitrating Reagents. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractNitro compounds are vital raw chemicals that are widely used in academic laboratories and industries for the preparation of various drugs, agrochemicals, and materials. Thus, nitrating reactions are of great importance for chemists and are even taught in schools as one of the fundamental transformations in organic synthesis. Since the discovery of the first nitrating reactions in the 19th century, progress in this field has been constant. Yet, for many years the classical electrophilic nitration approach using a mixture of strong mineral acids dominated the field. However, in recent decades, the attention of researchers has focused on new reactivity and new reagents that can provide access to nitro compounds in a practical and straightforward way under mild reaction conditions. Organic nitrating reagents have played a special role in this field since they have enhanced reactivity. They also allow nitration to be carried out in an ecofriendly and sustainable manner. This review examines the development and application of organic nitrating reagents.1 Introduction2 Organic Nitrating Reagents2.1 Alkyl Nitrites2.2 Nitroalkanes2.3 Alkyl Nitrates2.4 N-Nitroamides2.5 N-Nitropyrazole2.6 N-Nitropyridinium Salts3 Organic Nitrating Reagents Generated In Situ3.1 Acyl Nitrates3.2 Trimethylsilyl Nitrate3.3 Nitro Onium Salts4 Organic Nitronium Salts5 Organic Nitrates and Nitrites5.1 Ammonium Nitrates5.2 Heteroarylium Nitrates5.3 Other Organic Nitrates5.4 Organic Nitrites6 Conclusion and Outlook
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10
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Li WX, Yang BW, Na JH, Rao W, Chu XQ, Shen ZL. Palladium-catalyzed cross-coupling of alkylindium reagent with diaryliodonium salt. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153729] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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11
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Guo S, Zhu G, Zhan L, Li B. Continuous kilogram-scale process for the synthesis strategy of 1,3,5-trimethyl-2-nitrobenzene in microreactor. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2021.12.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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12
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Shibata K, Takao KI, Ogura A. Diaryliodonium Salt-Based Synthesis of N-Alkoxyindolines and Further Insights into the Ishikawa Indole Synthesis. J Org Chem 2021; 86:10067-10087. [PMID: 34197104 DOI: 10.1021/acs.joc.1c00820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A diaryliodonium salt-based strategy enabled the first systematic synthesis of rarely accessible N-alkoxyindolines. Mechanistic analyses suggested that the reaction likely involves reductive elimination of iodobenzene from iodaoxazepine via a four-membered transition state, followed by Meisenheimer rearrangement. Substrates with N-carbamate protection afforded indole in a manner similar to that of the Ishikawa indole synthesis. Preinstallation of a stannyl group as an iodonium salt precursor greatly expanded the substrate scope, and further mechanistic insights are discussed.
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Affiliation(s)
- Kouhei Shibata
- Department of Applied Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Ken-Ichi Takao
- Department of Applied Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
| | - Akihiro Ogura
- Department of Applied Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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13
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Takenaga N, Kumar R, Dohi T. Heteroaryliodonium(III) Salts as Highly Reactive Electrophiles. Front Chem 2020; 8:599026. [PMID: 33330391 PMCID: PMC7714995 DOI: 10.3389/fchem.2020.599026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/16/2020] [Indexed: 11/20/2022] Open
Abstract
In recent years, the chemistry of heteroaryliodonium(III) salts has undergone significant developments. Heteroaryliodonium(III) salts have been found to be useful synthetic tools for the transfer of heteroaryl groups under metal-catalyzed and metal-free conditions for the preparation of functionalized heteroarene-containing compounds. Synthetic transformations mediated by these heteroaryliodonium(III) salts are classified into two categories: (1) reactions utilizing the high reactivity of the hypervalent iodine(III) species, and (2) reactions based on unique and new reactivities not observed in other types of conventional diaryliodonium salts. The latter feature is of particular interest and so has been intensively investigated in recent decades. This mini-review therefore aims to summarize the recent synthetic applications of heteroaryliodonium(III) salts as highly reactive electrophiles.
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Affiliation(s)
| | - Ravi Kumar
- J.C. Bose University of Science & Technology, YMCA, Faridabad, India
| | - Toshifumi Dohi
- College of Pharmaceutical Sciences, Ritsumeikan University, Kusatsu, Japan
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14
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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.
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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
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15
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Upadhyay A, Batabyal M, Kanika, Kumar S. Organoseleniums: Generated and Exploited in Oxidative Reactions. CHEM LETT 2020. [DOI: 10.1246/cl.200015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Aditya Upadhyay
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Monojit Batabyal
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Kanika
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
| | - Sangit Kumar
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) Bhopal, Bhopal By-pass Road, Bhauri, Bhopal 462066, Madhya Pradesh India
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16
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Chen JY, Wu HY, Gui QW, Han XR, Wu Y, Du K, Cao Z, Lin YW, He WM. Electrochemical Synthesis of α-Ketoamides under Catalyst-, Oxidant-, and Electrolyte-Free Conditions. Org Lett 2020; 22:2206-2209. [DOI: 10.1021/acs.orglett.0c00387] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Jin-Yang Chen
- College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408000, China
| | - Hong-Yu Wu
- College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408000, China
| | - Qing-Wen Gui
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan 411201, China
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha 410114, China
| | - Xiao-Ran Han
- College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408000, China
| | - Yan Wu
- College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408000, China
| | - Kui Du
- College of Chemistry and Chemical Engineering, Yangtze Normal University, Chongqing 408000, China
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha 410114, China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang 421001, China
| | - Wei-Min He
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, Changsha University of Science and Technology, Changsha 410114, China
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17
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Mudithanapelli C, Kim MH. Metal-free late-stage C(sp 2)-H functionalization of N-aryl amines with various sodium salts. Org Biomol Chem 2020; 18:450-464. [PMID: 31799581 DOI: 10.1039/c9ob02217a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Metal-free consecutive C(sp2)-X (X = Cl, Br, S, N) bond formations of N-aryl amines (cyclic, fused, carbamate, and aminium radicals) were achieved under mild conditions using [bis(trifluoroacetoxy)iodo]benzene (PIFA) and simple nonharmful sodium salts. This direct and selective C(sp2)-H functionalization showed excellent functional group compatibility, cost effectiveness, and late-stage applicability for the synthesis of biologically active natural products. Two mechanisms were proposed to explain the ortho- or para-preference, as well as the accelerating effect of CH3NO2.
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Affiliation(s)
- Chandrashekar Mudithanapelli
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea.
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18
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Jiang J, Li J. Mechanically Induced
N
‐arylation of Amines with Diaryliodonium Salts. ChemistrySelect 2020. [DOI: 10.1002/slct.201904188] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jun Jiang
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P. R. China
| | - Jianjun Li
- National Engineering Research Center for Process Development of Active Pharmaceutical Ingredients, College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 P. R. China
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19
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Mao Z, Liu M, Zhu G, Zhou J, Zhang X. Transition-metal-free highly regioselective C–H acetoxylation of pyrrolo[2,3-d]pyrimidine derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00702a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Transition-metal-free catalyzed direct C(sp2)–H acetoxylation of pyrrolo[2,3-d]pyrimidine derivatives is reported. This protocol provides a variety of acetoxylated pyrrolo[2,3-d]pyrimidines in good to excellent yields.
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Affiliation(s)
- Zhengtong Mao
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Min Liu
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Gaoyang Zhu
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Jing Zhou
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
| | - Xingxian Zhang
- College of Pharmaceutical Science
- Zhejiang University of Technology
- Hangzhou 310014
- P. R. China
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20
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Matsumoto M, Wada K, Urakawa K, Ishikawa H. Diaryliodonium Salt-Mediated Intramolecular C-N Bond Formation Using Boron-Masking N-Hydroxyamides. Org Lett 2019; 22:781-785. [PMID: 31887048 DOI: 10.1021/acs.orglett.9b04076] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Intramolecular aromatic C-N bond formation reactions using electron-rich aromatic tethered boron-masking N-hydroxyamide as substrate were realized. These new C-N bond formation reactions involve the in situ generation of a diaryliodonium salt by treatment with hypervalent iodine, deborylation by base treatment, spontaneous N → O acyl migration, cyclization, reductive elimination, elimination of benzoic acid, and tautomerization to indole formation. Hereby, we obtained highly functionalized electron-rich indoles and quinoline in practical yields.
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Affiliation(s)
- Makoto Matsumoto
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Kohei Wada
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Kazuki Urakawa
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
| | - Hayato Ishikawa
- Department of Chemistry, Graduate School of Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan.,Faculty of Advanced Science and Technology , Kumamoto University , 2-39-1, Kurokami , Chuo-ku, Kumamoto 860-8555 , Japan
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21
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Sousa E Silva FC, Van NT, Wengryniuk SE. Direct C-H α-Arylation of Enones with ArI(O 2CR) 2 Reagents. J Am Chem Soc 2019; 142:64-69. [PMID: 31841623 DOI: 10.1021/jacs.9b11282] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
α-Arylation of α,β-unsaturated ketones constitutes a powerful synthetic transformation. It is most commonly achieved via cross-coupling of α-haloenones, but this stepwise strategy requires prefunctionalized substrates and expensive catalysts. Direct enone C-H α-arylation would offer an atom- and step-economical alternative, but such reports are scarce. Herein we report the metal-free direct C-H arylation of enones mediated by hypervalent iodine reagents. The reaction proceeds via a reductive iodonium Claisen rearrangement of in situ-generated β-pyridinium silyl enol ethers. The aryl groups are derived from ArI(O2CCF3)2 reagents, which are readily accessed from the parent iodoarenes. The reaction is tolerant of a wide range of substitution patterns, and the incorporated arenes maintain the valuable iodine functional handle. Mechanistic investigations implicate arylation via an umpoled "enolonium" species and show that the presence of a β-pyridinium moiety is critical for the desired C-C bond formation.
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Affiliation(s)
- Felipe Cesar Sousa E Silva
- Department of Chemistry , Temple University , 1901 North 13th Street , Philadelphia , Pennsylvania 19122 , United States
| | - Nguyen T Van
- Department of Chemistry , Temple University , 1901 North 13th Street , Philadelphia , Pennsylvania 19122 , United States
| | - Sarah E Wengryniuk
- Department of Chemistry , Temple University , 1901 North 13th Street , Philadelphia , Pennsylvania 19122 , United States
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22
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Gallagher RT, Basu S, Stuart DR. Trimethoxyphenyl (TMP) as a Useful Auxiliary for
in situ
Formation and Reaction of Aryl(TMP)iodonium Salts: Synthesis of Diaryl Ethers. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901187] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rory T. Gallagher
- Department of ChemistryPortland State University Portland Oregon 97201 United States
| | - Souradeep Basu
- Department of ChemistryPortland State University Portland Oregon 97201 United States
| | - David R. Stuart
- Department of ChemistryPortland State University Portland Oregon 97201 United States
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23
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Affiliation(s)
- Sushobhan Mukhopadhyay
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Sector 10, Jankipuram Extension; Sitapur Road Lucknow 226031 Uttar Pradesh India
| | - Sanjay Batra
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute; Sector 10, Jankipuram Extension; Sitapur Road Lucknow 226031 Uttar Pradesh India
- Academy of Scientific and Innovative Research; CSIR - Human Resource Development Centre, (CSIR-HRDC) Campus, Sector 19; Kamla Nehru Nagar Ghaziabad 201002 Uttar Pradesh India
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24
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Choudhuri K, Pramanik M, Mal P. λ3
-Iodanes as Visible Light Photocatalyst in Thioacetalization of Aldehydes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900753] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Khokan Choudhuri
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; PO Bhimpur-Padanpur, Via Jatni 752050 Bhubaneswar District Khurda, Odisha India
| | - Milan Pramanik
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; PO Bhimpur-Padanpur, Via Jatni 752050 Bhubaneswar District Khurda, Odisha India
| | - Prasenjit Mal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; PO Bhimpur-Padanpur, Via Jatni 752050 Bhubaneswar District Khurda, Odisha India
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25
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Li X, Deng X, Coyne AG, Srinivasan R. meta-Nitration of Arenes Bearing ortho/para Directing Group(s) Using C-H Borylation. Chemistry 2019; 25:8018-8023. [PMID: 30974007 DOI: 10.1002/chem.201901633] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Indexed: 11/07/2022]
Abstract
Herein, we report the meta-nitration of arenes bearing ortho/para directing group(s) using the iridium-catalyzed C-H borylation reaction followed by a newly developed copper(II)-catalyzed transformation of the crude aryl pinacol boronate esters into the corresponding nitroarenes in a one-pot fashion. This protocol allows the synthesis of meta-nitrated arenes that are tedious to prepare or require multistep synthesis using the existing methods. The reaction tolerates a wide array of ortho/para-directing groups, such as -F, -Cl, -Br, -CH3 , -Et, -iPr -OCH3 , and -OCF3 . It also provides regioselective access to the nitro derivatives of π-electron-deficient heterocycles, such as pyridine and quinoline derivatives. The application of this method is demonstrated in the late-stage modification of complex molecules and also in the gram-scale preparation of an intermediate en route to the FDA-approved drug Nilotinib. Finally, we have shown that the nitro product obtained by this strategy can also be directly converted to the aniline or hindered amine through Baran's amination protocol.
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Affiliation(s)
- Xuejing Li
- School of Pharmaceutical Science and Technology (SPST), Tianjin University, 92 Weijin Road, Building 24, Nankai District, Tianjin, 300072, P.R. China
| | - Xingwang Deng
- School of Pharmaceutical Science and Technology (SPST), Tianjin University, 92 Weijin Road, Building 24, Nankai District, Tianjin, 300072, P.R. China
| | - Anthony G Coyne
- University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Rajavel Srinivasan
- School of Pharmaceutical Science and Technology (SPST), Tianjin University, 92 Weijin Road, Building 24, Nankai District, Tianjin, 300072, P.R. China
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26
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Gallagher RT, Seidl TL, Bader J, Orella C, Vickery T, Stuart DR. Anion Metathesis of Diaryliodonium Tosylate Salts with a Solid-Phase Column Constructed from Readily Available Laboratory Consumables. Org Process Res Dev 2019. [DOI: 10.1021/acs.oprd.9b00163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rory T. Gallagher
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Thomas L. Seidl
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Joshua Bader
- ExecuPharm, King of Prussia, Pennsylvania 19406, United States
| | - Charles Orella
- Department of Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - Thomas Vickery
- Department of Process Research and Development, Merck & Co., Inc., Rahway, New Jersey 07065, United States
| | - David R. Stuart
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
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27
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Mudithanapelli C, Dhorma LP, Kim MH. PIFA-Promoted, Solvent-Controlled Selective Functionalization of C(sp2)–H or C(sp3)–H: Nitration via C–N Bond Cleavage of CH3NO2, Cyanation, or Oxygenation in Water. Org Lett 2019; 21:3098-3102. [DOI: 10.1021/acs.orglett.9b00751] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Chandrashekar Mudithanapelli
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Lama Prema Dhorma
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea
| | - Mi-hyun Kim
- Gachon Institute of Pharmaceutical Science & Department of Pharmacy, College of Pharmacy, Gachon University, 191 Hambakmoeiro, Yeonsu-gu, Incheon 21936, Republic of Korea
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28
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Kwon YD, Son J, Chun JH. Chemoselective Radiosyntheses of Electron-Rich [18F]Fluoroarenes from Aryl(2,4,6-trimethoxyphenyl)iodonium Tosylates. J Org Chem 2019; 84:3678-3686. [DOI: 10.1021/acs.joc.9b00019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Young-Do Kwon
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jeongmin Son
- Department of Nuclear Medicine, Severance Hospital, Yonsei University Health System, Seoul 03722, Republic of Korea
| | - Joong-Hyun Chun
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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29
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Juárez-Ornelas KA, Jiménez-Halla JOC, Kato T, Solorio-Alvarado CR, Maruoka K. Iodine(III)-Catalyzed Electrophilic Nitration of Phenols via Non-Brønsted Acidic NO2+ Generation. Org Lett 2019; 21:1315-1319. [DOI: 10.1021/acs.orglett.8b04141] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kevin A. Juárez-Ornelas
- Universidad de Guanajuato, Campus Guanajuato,
División de Ciencias Naturales y Exactas, Departamento de Química,
Noria Alta S/N, 36050, Guanajuato, Guanajuato, México
| | - J. Oscar C. Jiménez-Halla
- Universidad de Guanajuato, Campus Guanajuato,
División de Ciencias Naturales y Exactas, Departamento de Química,
Noria Alta S/N, 36050, Guanajuato, Guanajuato, México
| | - Terumasa Kato
- Department of Chemistry, Graduate School of Sciences, Kyoto University, Sakyo, Kyoto 606-8502, Japan
| | - César R. Solorio-Alvarado
- Universidad de Guanajuato, Campus Guanajuato,
División de Ciencias Naturales y Exactas, Departamento de Química,
Noria Alta S/N, 36050, Guanajuato, Guanajuato, México
| | - Keiji Maruoka
- Department of Chemistry, Graduate School of Sciences, Kyoto University, Sakyo, Kyoto 606-8502, Japan
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30
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Bose A, Maiti S, Sau S, Mal P. An intramolecular C(sp3)–H imination using PhI–mCPBA. Chem Commun (Camb) 2019; 55:2066-2069. [DOI: 10.1039/c8cc09100e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Development of sustainable methods for the activation of less reactive undirected C(sp3)–H bonds is challenging but desired in organic synthesis. The present manuscript demonstrates selective activation of acidic C(sp3)–H groups for a dehydrogenative C–H imination reaction by 4H elimination using PhI (10 mol%)–mCPBA as an organocatalyst.
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Affiliation(s)
- Anima Bose
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar
- India
| | - Saikat Maiti
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar
- India
| | - Sudip Sau
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar
- India
| | - Prasenjit Mal
- School of Chemical Sciences
- National Institute of Science Education and Research (NISER)
- HBNI
- Bhubaneswar
- India
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31
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Zhang H, Wang KH, Wang J, Su Y, Huang D, Hu Y. N-Arylations of trifluoromethylated N-acylhydrazones with diaryliodonium salts as arylation reagents. Org Biomol Chem 2019; 17:2940-2947. [DOI: 10.1039/c9ob00236g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel and efficient N-arylation of trifluoromethylated N-acylhydrazones is described by using diaryliodonium salts as arylation reagents in the presence of copper salts. A wide variety of N-aryl acylhydrazones are obtained with good to excellent yields under mild reaction conditions.
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Affiliation(s)
| | - Ke-Hu Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Junjiao Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Yingpeng Su
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Danfeng Huang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
| | - Yulai Hu
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- P. R. China
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32
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Wan Y, Zhang Z, Ma N, Bi J, Zhang G. Acylamino-Directed Specific Sequential Difunctionalizations of Anilides via Metal-Free Relay Reactions for p-Oxygen and o-Nitrogen Incorporation. J Org Chem 2018; 84:780-791. [DOI: 10.1021/acs.joc.8b02636] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yameng Wan
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Zhiguo Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Nana Ma
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Jingjing Bi
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guisheng Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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33
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Li X, Chen P, Liu G. Palladium-Catalyzed Intermolecular Arylcarbonylation of Unactivated Alkenes: Incorporation of Bulky Aryl Groups at Room Temperature. Angew Chem Int Ed Engl 2018; 57:15871-15876. [PMID: 30295983 DOI: 10.1002/anie.201810405] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Indexed: 12/17/2022]
Abstract
A palladium-catalyzed intermolecular arylcarbonylation of unactivated alkenes has been developed. Unsymmetrical diaryliodonium salts (DAISs) were used as arylation reagents, the bulky aryl group (ArL ) of which was exclusively incorporated into the arylcarbonylated products, which contained the ArL group and a carboxylic ester group at the α- and β-carbon position, respectively, of the original terminal C-C double bond. The reaction features excellent chemo- and regioselectivity, high functional-group tolerance, and very mild reaction conditions.
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Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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34
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Li X, Chen P, Liu G. Palladium-Catalyzed Intermolecular Arylcarbonylation of Unactivated Alkenes: Incorporation of Bulky Aryl Groups at Room Temperature. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810405] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; Shanghai Institute of Organic Chemistry; University of Chinese Academy of Sciences; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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35
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Bugaenko DI, Yurovskaya MA, Karchava AV. N-Arylation of DABCO with Diaryliodonium Salts: General Synthesis of N-Aryl-DABCO Salts as Precursors for 1,4-Disubstituted Piperazines. Org Lett 2018; 20:6389-6393. [PMID: 30265556 DOI: 10.1021/acs.orglett.8b02676] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Employing DABCO as a substrate, aryl(mesityl)iodonium triflates are introduced as arylating agents for a tertiary sp3-nitrogen. Mild conditions and exceptional selectivity of the aryl group transfer allow unprecedented N-aryl-DABCO salts to be obtained, bearing substituents of different electronic natures. This metal-free methodology has no analogy among known transition-metal-based reactions. The utility of isolated N-aryl-DABCO salts is demonstrated for the preparation of flibanserin.
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Affiliation(s)
- Dmitry I Bugaenko
- Department of Chemistry , Moscow State University , Moscow 119234 , Russia
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36
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Bal A, Maiti S, Mal P. Iodine(III)-Enabled Distal C–H Functionalization of Biarylsulfonanilides. J Org Chem 2018; 83:11278-11287. [DOI: 10.1021/acs.joc.8b01857] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ankita Bal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - 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
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37
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Purkait N, Kervefors G, Linde E, Olofsson B. Regiospecific N-Arylation of Aliphatic Amines under Mild and Metal-Free Reaction Conditions. Angew Chem Int Ed Engl 2018; 57:11427-11431. [PMID: 29956877 PMCID: PMC6120470 DOI: 10.1002/anie.201807001] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Indexed: 01/25/2023]
Abstract
A transition metal‐free N‐arylation of primary and secondary amines with diaryliodonium salts is presented. Both acyclic and cyclic amines are well tolerated, providing a large set of N‐alkyl anilines. The methodology is unprecedented among metal‐free methods in terms of amine scope, the ability to transfer both electron‐withdrawing and electron‐donating aryl groups, and efficient use of resources, as excess substrate or reagents are not required.
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Affiliation(s)
- Nibadita Purkait
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Gabriella Kervefors
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Erika Linde
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
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38
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Purkait N, Kervefors G, Linde E, Olofsson B. Regiospecific N-Arylation of Aliphatic Amines under Mild and Metal-Free Reaction Conditions. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Nibadita Purkait
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University 10691 Stockholm Sweden
| | - Gabriella Kervefors
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University 10691 Stockholm Sweden
| | - Erika Linde
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University 10691 Stockholm Sweden
| | - Berit Olofsson
- Department of Organic Chemistry; Arrhenius Laboratory; Stockholm University 10691 Stockholm Sweden
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39
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Lu N, Huang L, Xie L, Cheng J. Transition-Metal-Free Selective Iodoarylation of Pyrazoles via Heterocyclic Aryliodonium Ylides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800416] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nannan Lu
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
| | - Liangsen Huang
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
| | - Lili Xie
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
| | - Jiajia Cheng
- State Key Laboratory of Photocatalysis on Energy and Environment; College of Chemistry; Fuzhou University; 350116 Fuzhou P. R. China
- State Key Laboratory of Structural Chemistry; Fujian Institute of Research on the Structure of Matter; Chinese Academy of Sciences; 350002 Fuzhou Fujian P. R. China
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40
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Bugaenko DI, Karchava AV, Yurovskaya MA. Arynes, diaryliodonium salts and azine N-oxides in transition metal-free electrophilic N-arylation. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4781] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Rajkiewicz AA, Kalek M. N-Heterocyclic Carbene-Catalyzed Olefination of Aldehydes with Vinyliodonium Salts To Generate α,β-Unsaturated Ketones. Org Lett 2018. [DOI: 10.1021/acs.orglett.8b00447] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Adam A. Rajkiewicz
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
- Faculty of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw, Poland
| | - Marcin Kalek
- Centre of New Technologies, University of Warsaw, Banacha 2C, 02-097 Warsaw, Poland
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42
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Sun D, Yin K, Zhang R. Visible-light-induced multicomponent cascade cycloaddition involving N-propargyl aromatic amines, diaryliodonium salts and sulfur dioxide: rapid access to 3-arylsulfonylquinolines. Chem Commun (Camb) 2018; 54:1335-1338. [PMID: 29350225 DOI: 10.1039/c7cc09410h] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A visible-light-induced, Eosin Y catalyzed three-component synthesis of 3-arylsulfonylquinoline derivatives through N-propargyl aromatic amines, diaryliodonium salts and sulfur dioxide has been discovered. This transformation represents an efficient and attractive method for the straightforward synthesis of 3-arylsulfonylquinoline derivatives via the formation of C-S bonds and quinolines in one step. In addition, it exhibits good substrate scope and functional group tolerance. The use of easy-to-handle diaryliodonium salts, sulfur dioxide sources and the cheap photocatalyst Eosin Y together with facile operation at room temperature makes this protocol very practical.
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Affiliation(s)
- Deli Sun
- School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
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43
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Villo P, Kervefors G, Olofsson B. Transition metal-free, chemoselective arylation of thioamides yielding aryl thioimidates orN-aryl thioamides. Chem Commun (Camb) 2018; 54:8810-8813. [DOI: 10.1039/c8cc04795b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highlyS-selective arylation of thioamides provided efficient access to aryl thioimidates.
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Affiliation(s)
- Piret Villo
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- Sweden
- Institute of Technology
| | - Gabriella Kervefors
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- Sweden
| | - Berit Olofsson
- Department of Organic Chemistry
- Arrhenius Laboratory
- Stockholm University
- Sweden
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44
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Pothikumar R, Sujatha C, Namitharan K. Transition-Metal-Free In Situ Generation of Terminal Alkenes: Synthesis of Multisubstituted Acrylamidines via Tandem sp3 C–H Olefination/sp2 C–H Arylation Reactions. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02819] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rajagopal Pothikumar
- Organic
Synthesis and Catalysis Laboratory, SRM Research Institute, SRM University, Chennai 603203, India
| | - Chandragiri Sujatha
- Organic
Synthesis and Catalysis Laboratory, SRM Research Institute, SRM University, Chennai 603203, India
| | - Kayambu Namitharan
- Organic
Synthesis and Catalysis Laboratory, SRM Research Institute, SRM University, Chennai 603203, India
- Department
of Chemistry, SRM University-AP, Amaravati 522502, India
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45
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Stridfeldt E, Lindstedt E, Reitti M, Blid J, Norrby P, Olofsson B. Competing Pathways in O-Arylations with Diaryliodonium Salts: Mechanistic Insights. Chemistry 2017; 23:13249-13258. [PMID: 28792102 PMCID: PMC5639379 DOI: 10.1002/chem.201703057] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Indexed: 01/11/2023]
Abstract
A mechanistic study of arylations of aliphatic alcohols and hydroxide with diaryliodonium salts, to give alkyl aryl ethers and diaryl ethers, has been performed using experimental techniques and DFT calculations. Aryne intermediates have been trapped, and additives to avoid by-product formation originating from arynes have been found. An alcohol oxidation pathway was observed in parallel to arylation; this is suggested to proceed by an intramolecular mechanism. Product formation pathways via ligand coupling and arynes have been compared, and 4-coordinated transition states were found to be favored in reactions with alcohols. Furthermore, a novel, direct nucleophilic substitution pathway has been identified in reactions with electron-deficient diaryliodonium salts.
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Affiliation(s)
- Elin Stridfeldt
- Department of Organic ChemistryArrhenius LaboratoryStockholm University106 91StockholmSweden
| | - Erik Lindstedt
- Department of Organic ChemistryArrhenius LaboratoryStockholm University106 91StockholmSweden
| | - Marcus Reitti
- Department of Organic ChemistryArrhenius LaboratoryStockholm University106 91StockholmSweden
| | - Jan Blid
- Department of Organic ChemistryArrhenius LaboratoryStockholm University106 91StockholmSweden
| | - Per‐Ola Norrby
- Pharmaceutical SciencesAstraZeneca Gothenburg431 83MölndalSweden
| | - Berit Olofsson
- Department of Organic ChemistryArrhenius LaboratoryStockholm University106 91StockholmSweden
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46
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Dohi T, Koseki D, Sumida K, Okada K, Mizuno S, Kato A, Morimoto K, Kita Y. Metal-Free O
-Arylation of Carboxylic Acid by Active Diaryliodonium(III) Intermediates Generated in situ
from Iodosoarenes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700843] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Toshifumi Dohi
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Daichi Koseki
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Kohei Sumida
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Kana Okada
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Serina Mizuno
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Asami Kato
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Koji Morimoto
- College of Pharmaceutical Sciences; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
| | - Yasuyuki Kita
- Research Organization of Science and Technology; Ritsumeikan University; 1-1-1 Nojihigashi Kusatsu, Shiga 525-8577 JAPAN
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47
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Stuart DR. Aryl Transfer Selectivity in Metal-Free Reactions of Unsymmetrical Diaryliodonium Salts. Chemistry 2017; 23:15852-15863. [PMID: 28793179 DOI: 10.1002/chem.201702732] [Citation(s) in RCA: 85] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Indexed: 11/07/2022]
Abstract
Aromatic rings are found in a wide variety of products, including pharmaceuticals, agrochemicals, and functional materials. Diaryliodonium salts are new reagents used to transfer aryl groups under both metal-free and metal-catalyzed reactions and thereby synthesize arene-containing compounds. This minireview focuses on recent studies in selective aryl transfer reactions from unsymmetrical diaryliodonium salts under metal-free conditions. Reactions reported from 2007 to 2017, which represents a period of significant growth in diaryliodonium salt chemistry, are presented and organized by the type of reactive intermediate formed in the reaction. Specifically, reactions involving λ3 -iodane, λ3 -iodane radical anions, aryl radicals, and arynes are discussed. Chemoselectivity trends in aryl transfer are compared and contrasted across reaction intermediates and translation to potential auxiliaries are posited.
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Affiliation(s)
- David R Stuart
- Department of Chemistry, Portland State University, 1719 SW 10thAve, Portland, OR, 97201, USA
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48
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Shao Y, Zheng H, Wu Z, Huang L, Tong J, Wu M, Sun X. NH4I/tert-Butyl Hydroperoxide-Promoted Oxidative C–N Cleavage of Tertiary Amines Leading to Nitroaromatic Compounds. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x15022797727991] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A NH4I/ tert-butyl hydroperoxide-promoted oxidation of tertiary N-aryl- N,N-dialkylamines in DMSO has been developed to access nitroaromatic compounds. This methodology involves sequential N-dealkylation reactions in one-pot and a radical pathway is proposed.
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Affiliation(s)
- Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
| | - Hao Zheng
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
| | - Zhuhong Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
| | - Lei Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
| | - Jingjing Tong
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
| | - Ming Wu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
| | - Xiaoqiang Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Advanced Catalysis and Green Manufacturing Collaborative Innovation Centre, Changzhou University, Changzhou 213164, P.R. China
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49
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Koleda O, Broese T, Noetzel J, Roemelt M, Suna E, Francke R. Synthesis of Benzoxazoles Using Electrochemically Generated Hypervalent Iodine. J Org Chem 2017; 82:11669-11681. [DOI: 10.1021/acs.joc.7b01686] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Olesja Koleda
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Timo Broese
- Institute
of Chemistry, Rostock University, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Jan Noetzel
- Lehrstuhl
für Theoretische Chemie, Ruhr-University Bochum, 44780 Bochum, Germany
| | - Michael Roemelt
- Lehrstuhl
für Theoretische Chemie, Ruhr-University Bochum, 44780 Bochum, Germany
- Max-Planck Institut für Kohlenforschung, Kaiser-Wilhelm Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Edgars Suna
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia
| | - Robert Francke
- Institute
of Chemistry, Rostock University, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
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50
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Seidl TL, Stuart DR. An Admix Approach To Determine Counter Anion Effects on Metal-Free Arylation Reactions with Diaryliodonium Salts. J Org Chem 2017; 82:11765-11771. [PMID: 28800238 DOI: 10.1021/acs.joc.7b01599] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A method to determine the effect of counter anions in metal-free arylation reactions of diaryliodonium salts is described. This approach avoids the independent synthesis of individual diaryliodonium salts and potentially enables assessment of a large number of different counter anions, including those that are synthetically challenging to install. Diaryliodonium tosylate salts serve as a general precursor for this approach, and an azide arylation reaction was used to develop this strategy. Further optimization and representative scope of azide arylation is demonstrated in yields that range from 74-95% (89% average). The use of this method as a screening tool has also been validated with arylation reactions of three different nucleophiles employing diphenyliodonium tosylate.
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Affiliation(s)
- Thomas L Seidl
- Department of Chemistry, Portland State University , Portland, Oregon 97201, United States
| | - David R Stuart
- Department of Chemistry, Portland State University , Portland, Oregon 97201, United States
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