1
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Taguchi J, Okuyama T, Tomita S, Niwa T, Hosoya T. Synthesis of Multisubstituted Aromatics via 3-Triazenylarynes. Org Lett 2023; 25:7030-7034. [PMID: 37712445 DOI: 10.1021/acs.orglett.3c02615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023]
Abstract
An efficient method for generating 3-triazenylarynes from ortho-iodoaryl triflate-type precursors was developed. The generated arynes reacted with various arynophiles with high regioselectivity because of the triazenyl group. The 3-triazenylaryne precursors functioned as useful intermediates of diverse multisubstituted aromatic compounds through the transformation of the remaining triazenyl group of aryne adducts and triazenyl group-directed ortho-C-H functionalization.
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Affiliation(s)
- Jumpei Taguchi
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takumi Okuyama
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Satomi Tomita
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Takashi Niwa
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe 650-0047, Japan
- Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
- Laboratory for Chemical Biology, RIKEN Center for Biosystems Dynamics Research (BDR), 6-7-3 Minatojima-Minamimachi, Chuo-ku, Kobe 650-0047, Japan
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2
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Wang J, Li Z, You G, Xu L, Gao P, Rao B. Regioselective transformation of 3-phosphoryl benzyne intermediates to diverse phosphorus-substituted arenes. NEW J CHEM 2022. [DOI: 10.1039/d2nj03638j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pre-functionalized benzyne precursors 5, 6 and 10 bearing a phosphoryl group were efficiently synthesized via a phospho-Fries rearrangement reaction on gram scales, and directly proceed various transformations to poly-substituted organophosphorus arenes in high regioselectivity.
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Affiliation(s)
- Jing Wang
- School of Chemistry, Xi’an Key Laboratory of Sustainable Energy Materials Chemistry, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Zenghui Li
- School of Chemistry, Xi’an Key Laboratory of Sustainable Energy Materials Chemistry, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Gaoqiang You
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, China
| | - Liang Xu
- School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, China
| | - Pin Gao
- School of Chemistry, Xi’an Key Laboratory of Sustainable Energy Materials Chemistry, Xi’an Jiaotong University, Xi’an 710049, P. R. China
| | - Bin Rao
- School of Chemistry, Xi’an Key Laboratory of Sustainable Energy Materials Chemistry, Xi’an Jiaotong University, Xi’an 710049, P. R. China
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3
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Taguchi J, Kimura K, Igawa K, Tomooka K, Hosoya T. 3-Azidoarynes: Generation and Regioselective Reactions. CHEM LETT 2021. [DOI: 10.1246/cl.210632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jumpei Taguchi
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Kota Kimura
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
| | - Kazunobu Igawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-0062, Japan
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4
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Ikawa T, Yamamoto Y, Heguri A, Fukumoto Y, Murakami T, Takagi A, Masuda Y, Yahata K, Aoyama H, Shigeta Y, Tokiwa H, Akai S. Could London Dispersion Force Control Regioselective (2 + 2) Cyclodimerizations of Benzynes? YES: Application to the Synthesis of Helical Biphenylenes. J Am Chem Soc 2021; 143:10853-10859. [PMID: 34197100 DOI: 10.1021/jacs.1c05434] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In recent years, London dispersion interactions, which are the attractive component of the van der Waals potential, have been found to play an important role in controlling the regio- and/or stereoselectivity of various reactions. Particularly, the dispersion interactions between substrates and catalysts (or ligands) are dominant in various selective catalyzes. In contrast, repulsive steric interactions, rather than the attractive dispersion interactions, between bulky substituents are predominant in most of the noncatalytic reactions. Herein, we demonstrate the first example of London dispersion-controlled noncatalytic (2 + 2) cyclodimerization of substituted benzynes to selectively afford proximal biphenylenes in high yields and regioselectivities, depending on the extent of dispersion interactions in the substituents. This method can be applied for the synthesis of novel helical biphenylenes, which would be fascinating for chemists as these compounds are potential skeletons for ligands, catalysts, and medicines.
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Affiliation(s)
- Takashi Ikawa
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Daigaku-Nishi, Gifu 501-1196, Japan
| | - Yuta Yamamoto
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Akito Heguri
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yutaka Fukumoto
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tomonari Murakami
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akira Takagi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yuto Masuda
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kenzo Yahata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Aoyama
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasuteru Shigeta
- Center for Computational Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Hiroaki Tokiwa
- Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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5
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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6
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Ikawa T, Masuda S, Akai S. One‐Pot Generation of Benzynes from Phenols: Formation of Primary Anilines by the Deoxyamination of Phenols. Chemistry 2020; 26:4320-4332. [DOI: 10.1002/chem.201904987] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Takashi Ikawa
- Graduate School of Pharmaceutical Sciences Osaka University Yamadaoka 1–6 Suita Osaka 565-0871 Japan
| | - Shigeaki Masuda
- Graduate School of Pharmaceutical Sciences Osaka University Yamadaoka 1–6 Suita Osaka 565-0871 Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences Osaka University Yamadaoka 1–6 Suita Osaka 565-0871 Japan
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7
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Uchida K, Yoshida S, Hosoya T. Synthetic Aryne Chemistry toward Multicomponent Coupling. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Suguru Yoshida
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
| | - Takamitsu Hosoya
- Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University
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8
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Mirzaei S, Khosravi H. Predicting the regioselectivity of arynes: a simple model based on orbital electronegativity. NEW J CHEM 2019. [DOI: 10.1039/c8nj04027c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple model based on orbital electronegativity to predict the regioselectivity of arynes is reported; the nucleophiles attack the terminus possessing lower OE.
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Affiliation(s)
- Saber Mirzaei
- Department of Chemistry
- Marquette University
- Milwaukee
- USA
| | - Hormoz Khosravi
- Faculty of Chemistry
- K. N. Toosi University of Technology
- Tehran
- Iran
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9
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Ikawa T, Masuda S, Akai S. Microflow Fluorinations of Benzynes: Efficient Synthesis of Fluoroaromatic Compounds. Chem Pharm Bull (Tokyo) 2018; 66:1153-1164. [DOI: 10.1248/cpb.c18-00578] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Takashi Ikawa
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Shigeaki Masuda
- Graduate School of Pharmaceutical Sciences, Osaka University
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University
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10
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Jia H, Guo Z, Liu H, Mao B, Shi X, Guo H. Tandem nucleophilic addition–cycloaddition of arynes with α-iminoesters: two concurrent pathways to imidazolidines. Chem Commun (Camb) 2018; 54:7050-7053. [DOI: 10.1039/c8cc03806f] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The tandem nucleophilic addition-cycloaddition reaction of arynes with α-iminoesters gave functionalized imidazolidine derivatives with high yields, complete regioselectivities, and excellent diastereo- and enantioselectivities.
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Affiliation(s)
- Hao Jia
- College of Science
- China Agricultural University
- Beijing 100193
- China
| | - Zhenyan Guo
- College of Science
- China Agricultural University
- Beijing 100193
- China
| | - Honglei Liu
- College of Science
- China Agricultural University
- Beijing 100193
- China
| | - Biming Mao
- College of Science
- China Agricultural University
- Beijing 100193
- China
| | - Xueyan Shi
- College of Plant Protection
- China Agricultural University
- Beijing 100193
- China
| | - Hongchao Guo
- College of Science
- China Agricultural University
- Beijing 100193
- China
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11
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Takagi A. Development of Efficient Methods for Benzyne Generation. YAKUGAKU ZASSHI 2018; 138:27-35. [DOI: 10.1248/yakushi.17-00157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Akira Takagi
- Graduate School of Pharmaceutical Sciences, Osaka University
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12
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Predicting the regioselectivity of nucleophilic addition to arynes using frontier molecular orbital contribution analysis. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.07.047] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Fine Nathel NF, Morrill LA, Mayr H, Garg NK. Quantification of the Electrophilicity of Benzyne and Related Intermediates. J Am Chem Soc 2016; 138:10402-5. [PMID: 27480639 PMCID: PMC5457803 DOI: 10.1021/jacs.6b06216] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The determination of reactivity parameters for short-lived intermediates provides an indispensable tool for synthetic design. Despite that electrophilicity parameters have now been established for more than 250 reactive species, the corresponding parameters for benzyne and related intermediates have not been uncovered. We report a study that has allowed for the quantification of benzyne's electrophilicity parameter. Our approach relies on the strategic use of the diffusion-clock method and also provides electrophilicity parameters E for other substituted arynes.
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Affiliation(s)
- Noah F. Fine Nathel
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Lucas A. Morrill
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Herbert Mayr
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstraße 5-13 (Haus F), 81377 München, Germany
| | - Neil K. Garg
- Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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14
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Molloy JJ, Watson AJB. B-Protected Boronic Acids: Methodology Development and Strategic Application. BORON REAGENTS IN SYNTHESIS 2016. [DOI: 10.1021/bk-2016-1236.ch012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- John J. Molloy
- Department of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, United Kingdom
| | - Allan J. B. Watson
- Department of Pure and Applied Chemistry, WestCHEM, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, United Kingdom
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15
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Demory E, Devaraj K, Orthaber A, Gates PJ, Pilarski LT. Boryl (Hetero)aryne Precursors as Versatile Arylation Reagents: Synthesis through C-H Activation and Orthogonal Reactivity. Angew Chem Int Ed Engl 2015; 54:11765-9. [PMID: 26270451 PMCID: PMC4600243 DOI: 10.1002/anie.201503152] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 07/11/2015] [Indexed: 11/25/2022]
Abstract
(Pinacolato)boryl ortho-silyl(hetero)aryl triflates are presented as a new class of building blocks for arylation. They demonstrate unique versatility by delivering boronate or (hetero)aryne reactivity chemoselectively in a broad range of transformations. This approach enables the unprecedented postfunctionalization of fluoride-activated (hetero)aryne precursors, for example, as substrates in transition-metal catalysis, and offers valuable new possibilities for aryl boronate postfunctionalization without the use of specialized protecting groups.
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Affiliation(s)
- Emilien Demory
- Department of Chemistry-BMC, Uppsala University, Box 576, 75-123 Uppsala (Sweden) http://www.pilarskigroup.org
| | - Karthik Devaraj
- Department of Chemistry-BMC, Uppsala University, Box 576, 75-123 Uppsala (Sweden) http://www.pilarskigroup.org
| | - Andreas Orthaber
- Department of Chemistry-Ångström Laboratories, Uppsala University, Box 523, 75-120 Uppsala (Sweden)
| | - Paul J Gates
- School of Chemistry, University of Bristol, Cantock's Close, Clifton, Bristol, BS8 1TS (UK)
| | - Lukasz T Pilarski
- Department of Chemistry-BMC, Uppsala University, Box 576, 75-123 Uppsala (Sweden) http://www.pilarskigroup.org.
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16
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Demory E, Devaraj K, Orthaber A, Gates PJ, Pilarski LT. Boryl (Hetero)aryne Precursors as Versatile Arylation Reagents: Synthesis through CH Activation and Orthogonal Reactivity. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503152] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Ikawa T, Kaneko H, Masuda S, Ishitsubo E, Tokiwa H, Akai S. Trifluoromethanesulfonyloxy-group-directed regioselective (3 + 2) cycloadditions of benzynes for the synthesis of functionalized benzo-fused heterocycles. Org Biomol Chem 2015; 13:520-6. [PMID: 25378144 DOI: 10.1039/c4ob01627k] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Highly regioselective (3 + 2) cycloadditions of (trifluoromethanesulfonyloxy)benzynes [(triflyloxy)benzynes] with 1,3-dipoles followed by cross-coupling reactions provided multisubstituted benzo-fused heterocycles. The triflyloxy group at the 3-position of benzynes, and even that at the remote 4-position, greatly affected the regiocontrol of the cycloaddition. These groups also served to install other substituents at their ipso-positions.
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Affiliation(s)
- Takashi Ikawa
- Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka, Suita, Osaka 565-0871, Japan.
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18
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Ikawa T, Yamamoto R, Takagi A, Ito T, Shimizu K, Goto M, Hamashima Y, Akai S. 2-[(Neopentyl glycolato)boryl]phenyl Triflates and Halides for Fluoride Ion-Mediated Generation of Functionalized Benzynes. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500315] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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19
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Medina JM, Mackey JL, Garg NK, Houk KN. The role of aryne distortions, steric effects, and charges in regioselectivities of aryne reactions. J Am Chem Soc 2014; 136:15798-805. [PMID: 25303232 PMCID: PMC4221504 DOI: 10.1021/ja5099935] [Citation(s) in RCA: 236] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2014] [Indexed: 12/16/2022]
Abstract
The distortion/interaction model has been used to explain and predict reactivity in a variety of reactions where more common explanations, such as steric and electronic factors, do not suffice. This model has also provided new fundamental insight into regioselectivity trends in reactions of unsymmetrical arynes, which in turn has fueled advances in aryne methodology and natural product synthesis. This article describes a systematic experimental and computational study of one particularly important class of arynes, 3-halobenzynes. 3-Halobenzynes are useful synthetic building blocks whose regioselectivities have been explained by several different models over the past few decades. Our efforts show that aryne distortion, rather than steric factors or charge distribution, are responsible for the regioselectivities observed in 3-haloaryne trapping experiments. We also demonstrate the synthetic utility of 3-halobenzynes for the efficient synthesis of functionalized heterocycles, using a tandem aryne-trapping/cross-coupling sequence involving 3-chlorobenzyne.
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Affiliation(s)
| | | | - Neil K. Garg
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - K. N. Houk
- Department of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
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20
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Ikawa T, Urata H, Fukumoto Y, Sumii Y, Nishiyama T, Akai S. Concise Synthesis of Multisubstituted Isoquinolines from Pyridines by Regioselective Diels-Alder Reactions of 2-Silyl-3,4-pyridynes. Chemistry 2014; 20:16228-32. [DOI: 10.1002/chem.201404633] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Indexed: 01/19/2023]
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21
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Yoshida S, Uchida K, Igawa K, Tomooka K, Hosoya T. An efficient generation method and remarkable reactivities of 3-triflyloxybenzyne. Chem Commun (Camb) 2014; 50:15059-62. [DOI: 10.1039/c4cc07058e] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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22
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Abstract
Heterocyclic arynes have long been targeted as potential tools for the synthesis of substituted heterocycles. Recent advances have led to an improved understanding of the factors that determine regioselectivity in reactions of these strained intermediates and, in turn, the aryne distortion model. This paper highlights the use of this predictive model to enable the use of heterocyclic arynes, such as indolynes and pyridynes, in chemical synthesis.
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23
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García-López JA, Greaney MF. Use of 2-Bromophenylboronic Esters as Benzyne Precursors in the Pd-Catalyzed Synthesis of Triphenylenes. Org Lett 2014; 16:2338-41. [DOI: 10.1021/ol5006246] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Michael F. Greaney
- School of Chemistry, University of Manchester, Oxford
Rd, Manchester M13 9PL, United Kingdom
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