1
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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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2
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Kikushima K, Elboray EE, Jimenez-Halla JOC, Solorio-Alvarado CR, Dohi T. Diaryliodonium(III) Salts in One-Pot Double Functionalization of C–IIII and ortho C–H Bonds. Org Biomol Chem 2022; 20:3231-3248. [DOI: 10.1039/d1ob02501e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Since the 1950s, diaryliodonium(III) salts have been demonstrated to participate in various arylation reactions, forming aryl–heteroatom and aryl–carbon bonds. Incorporating the arylation step into sequential transformations would provide access to...
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3
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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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4
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Ding W, Wang C, Tan JR, Ho CC, León F, García F, Yoshikai N. Site-selective aromatic C-H λ 3-iodanation with a cyclic iodine(iii) electrophile in solution and solid phases. Chem Sci 2020; 11:7356-7361. [PMID: 34123017 PMCID: PMC8159425 DOI: 10.1039/d0sc02737e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
An efficient and site-selective aromatic C-H λ3-iodanation reaction is achieved using benziodoxole triflate (BXT) as an electrophile under room temperature conditions. The reaction tolerates a variety of electron-rich arenes and heteroarenes to afford the corresponding arylbenziodoxoles in moderate to good yields. The reaction can also be performed mechanochemically by grinding a mixture of solid arenes and BXT under solvent-free conditions. The arylbenziodoxoles can be used for various C-C and C-heteroatom bond formations, and are also amenable to further modification by electrophilic halogenation. DFT calculations suggested that the present reaction proceeds via a concerted λ3-iodanation-deprotonation transition state, where the triflate anion acts as an internal base.
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Affiliation(s)
- Wei Ding
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Chen Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore .,Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, Shaoxing University Shaoxing 312000 China
| | - Jie Ren Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Chang Chin Ho
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Felix León
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Felipe García
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
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5
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de Azambuja F, Yang MH, Feoktistova T, Selvaraju M, Brueckner AC, Grove MA, Koley S, Cheong PHY, Altman RA. Connecting remote C-H bond functionalization and decarboxylative coupling using simple amines. Nat Chem 2020; 12:489-496. [PMID: 32152476 PMCID: PMC7192790 DOI: 10.1038/s41557-020-0428-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 01/23/2020] [Indexed: 01/01/2023]
Abstract
Transition metal-catalyzed C–H functionalization and decarboxylative coupling are two of the most notable synthetic strategies developed in the last 30 years. Herein, we connect these two reaction pathways using bases and a simple Pd-based catalyst system to promote a para-selective C–H functionalization reaction from benzylic electrophiles. Experimental and computational mechanistic studies suggest a pathway involving an uncommon Pd-catalyzed dearomatization of the benzyl moiety followed by a base-enabled rearomatization through a formal 1,5-hydrogen migration. This reaction complements “C–H activation” strategies that convert inert C–H bonds into C–metal bonds prior to C–C bond formation. Instead, this reaction exploits an inverted sequence and promotes C–C bond formation prior to deprotonation. These studies provide an opportunity to develop general para-selective C–H functionalization reactions from benzylic electrophiles and show how new reactive modalities may be accessed with careful control of reaction conditions.
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Affiliation(s)
- Francisco de Azambuja
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, KS, USA.,Department of Chemistry, KU Leuven, Leuven, Belgium
| | - Ming-Hsiu Yang
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, KS, USA.,The Scripps Research Institute, La Jolla, CA, USA
| | | | | | | | - Markas A Grove
- Department of Chemistry, Oregon State University, Corvallis, OR, USA
| | - Suvajit Koley
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, KS, USA
| | | | - Ryan A Altman
- Department of Medicinal Chemistry, The University of Kansas, Lawrence, KS, USA.
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6
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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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7
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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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8
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Dohi T, Hayashi T, Ueda S, Shoji T, Komiyama K, Takeuchi H, Kita Y. Recyclable synthesis of mesityl iodonium(III) salts. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.033] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Koseki D, Aoto E, Shoji T, Watanabe K, In Y, Kita Y, Dohi T. Efficient N-arylation of azole compounds utilizing selective aryl-transfer TMP-iodonium(III) reagents. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.04.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Li M, Shang M, Xu H, Wang X, Dai HX, Yu JQ. Remote Para-C–H Acetoxylation of Electron-Deficient Arenes. Org Lett 2019; 21:540-544. [DOI: 10.1021/acs.orglett.8b03871] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Minghong Li
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 20032, China
| | - Ming Shang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 20032, China
| | - Hui Xu
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 555 Road Zu Chong Zhi, Zhangjiang Hi-Tech Park, Shanghai 201203, China
| | - Xing Wang
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 555 Road Zu Chong Zhi, Zhangjiang Hi-Tech Park, Shanghai 201203, China
| | - Hui-Xiong Dai
- Department of Medicinal Chemistry, Shanghai Institute of Materia Medica, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 555 Road Zu Chong Zhi, Zhangjiang Hi-Tech Park, Shanghai 201203, China
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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11
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Taherinia Z, Ghorbani-Choghamarani A. Cu(I)–PNF, an organic-based nanocatalyst, catalyzed C–O and C–S cross-coupling reactions. CAN J CHEM 2019. [DOI: 10.1139/cjc-2017-0733] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Peptide nanofiber has been prepared via a self-assembly protocol and decorated with Cu(I) to prepare a nanostructural catalyst. The catalytic activity of this prepared nanomaterial (Cu(I)–PNF) was examined in C–O and C–S cross-coupling reactions. Compared with conventional copper–ligand catalytic systems, CuNP–PNF has unique advantages such as water solubility, high efficiency, and low cost, which makes it a highly efficient and beneficial catalyst to reuse in cross-coupling reactions.
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Affiliation(s)
- Zahra Taherinia
- Department of Chemistry, Faculty of Science, Ilam University, P.O. Box 69315516, Ilam, Iran
- Department of Chemistry, Faculty of Science, Ilam University, P.O. Box 69315516, Ilam, Iran
| | - Arash Ghorbani-Choghamarani
- Department of Chemistry, Faculty of Science, Ilam University, P.O. Box 69315516, Ilam, Iran
- Department of Chemistry, Faculty of Science, Ilam University, P.O. Box 69315516, Ilam, Iran
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12
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Hu Y, Wang M, Li P, Li H, Wang L. A Highly Efficient Copper‐Catalyzed C(sp2)−H Alkoxylation of the Benzamide Enabled by A Bidendate Directing Group. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800664] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yu Hu
- Department of ChemistryHuaibei Normal University, Huaibei Anhui 235000 P.R. China
| | - Min Wang
- Department of ChemistryHuaibei Normal University, Huaibei Anhui 235000 P.R. China
| | - Pinhua Li
- Department of ChemistryHuaibei Normal University, Huaibei Anhui 235000 P.R. China
| | - Hongji Li
- Department of ChemistryHuaibei Normal University, Huaibei Anhui 235000 P.R. China
| | - Lei Wang
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry Shanghai 200032 People's Republic of China
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13
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Dey A, Maity S, Maiti D. Reaching the south: metal-catalyzed transformation of the aromatic para-position. Chem Commun (Camb) 2018; 52:12398-12414. [PMID: 27559937 DOI: 10.1039/c6cc05235e] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Regioselective functionalization of aromatic arenes has created a rapid insurgence in the modern era of organic chemistry. While the last few years have witnessed significant developments on site-selective ortho- and meta-C-H transformations, there existed very few reports on para-C-H functionalization. Recent advancements on template assisted protocols in para-C-H activation has emerged as a popular and convenient feat in this area. This review highlights the various protocols developed over the years for selective installation of suitable functional groups at the para-position of arenes thereby transforming them into value-added organic cores.
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Affiliation(s)
- Aniruddha Dey
- Department of Chemistry, Indian Institute of Technology Bombay, India.
| | - Soham Maity
- Department of Chemistry, Indian Institute of Technology Bombay, India.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, India.
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14
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Sun Y, Huang X, Li X, Luo F, Zhang L, Chen M, Zheng S, Peng B. Mild Ring Contractions of Cyclobutanols to Cyclopropyl Ketones via Hypervalent Iodine Oxidation. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701237] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yan Sun
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Xin Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Xiaojin Li
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Fan Luo
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Lei Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Mengyuan Chen
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Shiya Zheng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials; Zhejiang Normal University; Jinhua 321004 People's Republic of China
- State Key Laboratory of Fine Chemicals; Dalian University of Technology; Dalian 116024 People's Republic of China
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15
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16
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Lindstedt E, Reitti M, Olofsson B. One-Pot Synthesis of Unsymmetric Diaryliodonium Salts from Iodine and Arenes. J Org Chem 2017; 82:11909-11914. [PMID: 28809562 DOI: 10.1021/acs.joc.7b01652] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first synthesis of unsymmetric diaryliodonium salts directly from iodine and arenes is presented. The methodology provides diaryliodonium salts with the trimethoxyphenyl (TMP) moiety as dummy group. The protocol avoids the customary use of iodoarenes, which can be both expensive and toxic. Excess reagents are not required, and the reactions are performed under mild conditions. O-Arylations with these TMP salts were demonstrated to be highly chemoselective.
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Affiliation(s)
- Erik Lindstedt
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University , SE-106 91 Stockholm, Sweden
| | - Marcus Reitti
- 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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17
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McCammant M, Thompson S, Brooks AF, Krska SW, Scott PJH, Sanford MS. Cu-Mediated C-H 18F-Fluorination of Electron-Rich (Hetero)arenes. Org Lett 2017; 19:3939-3942. [PMID: 28665619 PMCID: PMC5525103 DOI: 10.1021/acs.orglett.7b01902] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Indexed: 12/05/2022]
Abstract
This communication describes a method for the nucleophilic radiofluorination of electron-rich arenes. The reaction involves the initial C(sp2)-H functionalization of an electron-rich arene with MesI(OH)OTs to form a (mesityl)(aryl)iodonium salt. This salt is then used in situ in a Cu-mediated radiofluorination with [18F]KF. This approach leverages the stability and availability of electron-rich arene starting materials to enable mild late-stage radiofluorination of toluene, anisole, aniline, pyrrole, and thiophene derivatives. The radiofluorination has been automated to access a 41 mCi dose of an 18F-labeled nimesulide derivative in high (2800 ± 700 Ci/mmol) specific activity.
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Affiliation(s)
- Matthew
S. McCammant
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Stephen Thompson
- Department
of Radiology, University of Michigan, 1301 Catherine, Ann Arbor, Michigan 48109, United States
| | - Allen F. Brooks
- Department
of Radiology, University of Michigan, 1301 Catherine, Ann Arbor, Michigan 48109, United States
| | - Shane W. Krska
- Chemistry
Capabilities and Screening, Merck Sharp & Dohme, Kenilworth, New Jersey 07033, United States
| | - Peter J. H. Scott
- Department
of Radiology, University of Michigan, 1301 Catherine, Ann Arbor, Michigan 48109, United States
| | - Melanie S. Sanford
- Department
of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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18
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Yang L, Semba K, Nakao Y. para
‐Selective C−H Borylation of (Hetero)Arenes by Cooperative Iridium/Aluminum Catalysis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701238] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Lichen Yang
- Department of Material Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kazuhiko Semba
- Department of Material Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Yoshiaki Nakao
- Department of Material Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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19
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Yang L, Semba K, Nakao Y. para
‐Selective C−H Borylation of (Hetero)Arenes by Cooperative Iridium/Aluminum Catalysis. Angew Chem Int Ed Engl 2017; 56:4853-4857. [DOI: 10.1002/anie.201701238] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Lichen Yang
- Department of Material Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Kazuhiko Semba
- Department of Material Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
| | - Yoshiaki Nakao
- Department of Material Chemistry Graduate School of Engineering Kyoto University Katsura, Nishikyo-ku Kyoto 615-8510 Japan
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20
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Zhao J, Li S. Charge-Transfer-Induced para-Selective sp 2 C-H Bond Activation of Arenes by Use of a Hypervalent Iodine Compound: A Theoretical Study. J Org Chem 2017; 82:2984-2991. [PMID: 28225619 DOI: 10.1021/acs.joc.6b03050] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The reaction mechanism of the C-H bond activation of toluene promoted by the hypervalent iodine compound TIPP-I(OH)OTs was investigated in detail by density functional theory calculations. Our calculations show that a plausible reaction pathway of the C-H bond activation of toluene contains two stages: (1) the ligand exchange process on TIPP-I(OH)OTs, involving the substitution of the hydroxyl group and tosyloxyl group with TfOH, and (2) the C-H bond activation of toluene promoted by the hypervalent iodine center with the assistance of the triflate anion. The second step is the rate-limiting step with a relatively low free energy barrier of 19.6 kcal mol-1 in acetonitrile, which is in accord with the experimental fact that the reaction takes place at room temperature. Frontier molecular orbits and natural population analysis show that partial electron transfer from the toluene to the hypervalent iodine moiety occurs in the charge-transfer complex, resulting in the activation of the C-H bond at the para position of toluene. Further calculations show that this hypervalent iodine compound promoted C-H bond activation reaction will be effective if the substrate is electron-rich and a strong Brønsted acid is used.
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Affiliation(s)
- Jiyang Zhao
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University , Nanjing 210093, People's Republic of China.,Office of Science and Technology, Nanjing Xiaozhuang University , Nanjing 211171, People's Republic of China
| | - Shuhua Li
- School of Chemistry and Chemical Engineering, Key Laboratory of Mesoscopic Chemistry of Ministry of Education, Institute of Theoretical and Computational Chemistry, Nanjing University , Nanjing 210093, People's Republic of China
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21
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Huang H, Wu Y, Zhang W, Feng C, Wang BQ, Cai WF, Hu P, Zhao KQ, Xiang SK. Copper-Catalyzed Regioselective C-H Sulfonyloxylation of Electron-Rich Arenes with p-Toluenesulfonic Acid and Sulfonyloxylation of Aryl(mesityl)iodonium Sulfonates. J Org Chem 2017; 82:3094-3101. [PMID: 28230367 DOI: 10.1021/acs.joc.7b00081] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Copper-catalyzed regioselective C-H sulfonyloxylation of electron-rich arenes with p-toluenesulfonic acid has been developed. Electron-rich benzene derivatives and heteroarenes can undergo this C-H sulfonyloxylation reaction to generate aryl tosylates. Furthermore, sulfonyloxylation of aryl(mesityl)iodonium sulfonates has also been investigated. Both aryl(mesityl)iodonium tosylates and triflates can react smoothly to get aryl sulfonates. The formed aryl sulfonates can be converted to phenols, as well as used as good partners of cross-coupling reactions.
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Affiliation(s)
- He Huang
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Yang Wu
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Wen Zhang
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Chun Feng
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Wan-Fei Cai
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Ke-Qing Zhao
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
| | - Shi-Kai Xiang
- College of Chemistry and Materials Science, Sichuan Normal University , Chengdu 610068, People's Republic of China
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Alvarado J, Fournier J, Zakarian A. Synthesis of Functionalized Dihydrobenzofurans by Direct Aryl C-O Bond Formation under Mild Conditions. Angew Chem Int Ed Engl 2016; 55:11625-11628. [PMID: 27534735 PMCID: PMC5189712 DOI: 10.1002/anie.201605648] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 07/23/2016] [Indexed: 02/01/2023]
Abstract
A method for the synthesis of dihydrobenzofurans by a direct aryl C-O bond formation is described. A mechanistic pathway for the reaction, distinct from previously described similar transformations, allows for mild reaction conditions that are expected to be compatible with functionalized substrates.
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Affiliation(s)
- Joseph Alvarado
- Department of Chemistry and Biochemistry University of California, Santa Barbara CA 93106 (USA)
| | - Jeremy Fournier
- Department of Chemistry and Biochemistry University of California, Santa Barbara CA 93106 (USA)
| | - Armen Zakarian
- Department of Chemistry and Biochemistry University of California, Santa Barbara CA 93106 (USA)
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Alvarado J, Fournier J, Zakarian A. Synthesis of Functionalized Dihydrobenzofurans by Direct Aryl C−O Bond Formation under Mild Conditions. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605648] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Joseph Alvarado
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Jeremy Fournier
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
| | - Armen Zakarian
- Department of Chemistry and Biochemistry University of California Santa Barbara CA 93106 USA
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24
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Best D, Jean M, van de Weghe P. Modular Synthesis of Arylacetic Acid Esters, Thioesters, and Amides from Aryl Ethers via Rh(II)-Catalyzed Diazo Arylation. J Org Chem 2016; 81:7760-70. [DOI: 10.1021/acs.joc.6b01426] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Daniel Best
- Université de
Rennes 1, UMR CNRS
6226, Institut des Sciences Chimiques de Rennes, Equipe PNSCM, UFR
des Sciences, Biologiques et Pharmaceutiques, 2 Avenue du Prof Leon Bernard, Rennes F-35043 Cedex, France
| | - Mickaël Jean
- Université de
Rennes 1, UMR CNRS
6226, Institut des Sciences Chimiques de Rennes, Equipe PNSCM, UFR
des Sciences, Biologiques et Pharmaceutiques, 2 Avenue du Prof Leon Bernard, Rennes F-35043 Cedex, France
| | - Pierre van de Weghe
- Université de
Rennes 1, UMR CNRS
6226, Institut des Sciences Chimiques de Rennes, Equipe PNSCM, UFR
des Sciences, Biologiques et Pharmaceutiques, 2 Avenue du Prof Leon Bernard, Rennes F-35043 Cedex, France
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