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Li ZC, Zhang Y, Yan BX, Wang XN, Zhai DH, Li Q, Zheng HX, Zhao CQ. The conversion of ether bonds to hydroxyl via a base-promoted rearrangement of cyclic phosphine oxides. Org Chem Front 2021. [DOI: 10.1039/d1qo00925g] [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
Biphenyl derived secondary phosphine oxides having 2′-hydroxyl were prepared.
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Affiliation(s)
- Zhan-Cai Li
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - Yu Zhang
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - Bing-Xia Yan
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - Xiao-Ning Wang
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - De-Hua Zhai
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - Qiang Li
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - Hong-Xing Zheng
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
| | - Chang-Qiu Zhao
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong, 252059, China
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2
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Shigeno M, Hayashi K, Nozawa-Kumada K, Kondo Y. Catalytic C(sp 2)-C(sp 3) Bond Formation of Methoxyarenes by the Organic Superbase t-Bu-P4. Org Lett 2020; 22:9107-9113. [PMID: 33175552 DOI: 10.1021/acs.orglett.0c03507] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The organic superbase catalyst t-Bu-P4 achieves nucleophilic aromatic substitution of methoxyarenes with alkanenitrile pronucleophiles. A variety of functional groups [cyano, nitro, (non)enolizable ketone, chloride, and amide moieties] are allowed on methoxyarenes. Moreover, an array of alkanenitriles with/without an aryl moiety at the nitrile α-position can be employed. The system also features no requirement of a stoichiometric base, MeOH (not salt waste) formation as a byproduct, and the production of congested quaternary carbon centers.
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Affiliation(s)
- Masanori Shigeno
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kazutoshi Hayashi
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kanako Nozawa-Kumada
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Yoshinori Kondo
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
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3
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Devi R, Mukhopadhyay S, Jyoti Das A, Kumar Das S. Base-mediated synthesis of benzimidazole-fused 1,4-benzoxazepines via sequential intermolecular epoxide ring-opening/intramolecular SNAr reactions. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152491] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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4
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Yan BX, Zhang Y, Zheng HX, Ye JJ, Wang XN, Li Q, Zhao CQ. Cleavage of Aromatic C-O Bonds via Intramolecular S NAr Reaction and Preparation of P, C, Axial-Stereogenic Menthyl Phosphine Derivatives. Org Lett 2020; 22:7947-7951. [PMID: 32996768 DOI: 10.1021/acs.orglett.0c02861] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Phosphine ligands with up to six chiral sites were prepared, starting from 2-phenylphenol, via O- and P-alkylation, cyclization, and coupling. The chirality was transferred from (L)-menthyl to phosphorus, α-carbon, and axis, to achieve excellent diastereoselectivities. During an intramolecular SNAr reaction with alkoxyl as the leaving groups, the C-O bond was converted to a C-C bond. Both phosphine boranes and oxides could be used for the conversions, affording a series of cyclic phosphines.
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Affiliation(s)
- Bing-Xia Yan
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
| | - Yu Zhang
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
| | - Hong-Xing Zheng
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
| | - Jing-Jing Ye
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
| | - Xiao-Ning Wang
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
| | - Qiang Li
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
| | - Chang-Qiu Zhao
- College of Chemistry and Chemical Engineering, Liaocheng University, No. 1, Hunan Road, Liaocheng, Shandong 252059, China
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5
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Shigeno M, Hayashi K, Nozawa-Kumada K, Kondo Y. Phosphazene Base tBu-P4 Catalyzed Methoxy-Alkoxy Exchange Reaction on (Hetero)Arenes. Chemistry 2019; 25:6077-6081. [PMID: 30807672 DOI: 10.1002/chem.201900498] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 02/22/2019] [Indexed: 12/14/2022]
Abstract
The organic superbase tBu-P4 catalyzes methoxy-alkoxy exchange reactions on (hetero)arenes with alcohols. The catalytic reaction proceeded efficiently with electron-deficient methoxy(hetero)arenes as well as with a variety of alcohols, including 3-amino-1-propanol, β-citronellol, menthol, and cholesterol. An intramolecular version of this reaction furnished six- and seven-membered ring compounds.
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Affiliation(s)
- Masanori Shigeno
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kazutoshi Hayashi
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Kanako Nozawa-Kumada
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
| | - Yoshinori Kondo
- Department of Biophysical Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University, Aoba, Sendai, 980-8578, Japan
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6
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Wang X, Li C, Wang X, Wang Q, Dong XQ, Duan A, Zhao W. Metal-Free Etherification of Aryl Methyl Ether Derivatives by C–OMe Bond Cleavage. Org Lett 2018; 20:4267-4272. [DOI: 10.1021/acs.orglett.8b01696] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xueqiang Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Chenchen Li
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Xia Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Qingli Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Xiu-Qin Dong
- Key Laboratory of Biomedical Polymers, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Abing Duan
- College of Environmental Science and Engineering, Hunan University, Changsha, Hunan 410082, China
| | - Wanxiang Zhao
- State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, Hunan 410082, China
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7
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Iron-Mediated Oxidative C-H Alkylation of S,S
-Functionalized Internal Olefins via
C(sp
2
)-H/C(sp
3
)-H Cross-Coupling. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700654] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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8
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Wen J, Zhang F, Shi W, Lei A. Metal-Free Direct Alkylation of Ketene Dithioacetals by Oxidative C(sp2
)−H/C(sp3
)−H Cross-Coupling. Chemistry 2017; 23:8814-8817. [DOI: 10.1002/chem.201701664] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Indexed: 01/23/2023]
Affiliation(s)
- Jiangwei Wen
- Institute for Advanced Studies (IAS); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 Hubei P. R. China
| | - Fan Zhang
- Institute for Advanced Studies (IAS); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 Hubei P. R. China
| | - Wenyan Shi
- Institute for Advanced Studies (IAS); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 Hubei P. R. China
| | - Aiwen Lei
- Institute for Advanced Studies (IAS); College of Chemistry and Molecular Sciences; Wuhan University; Wuhan 430072 Hubei P. R. China
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognization and Function Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
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9
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Abstract
In 1989, the reaction of vinyl magnesium halides with ortho-substituted nitroarenes leading to indoles was discovered. This reaction is now frequently reported as the "Bartoli reaction" or the "Bartoli indole synthesis" (BIS). It has rapidly become the shortest and most flexible route to 7-substituted indoles, because the classical indole syntheses generally fail in their preparation. The flexibility of the Bartoli reaction is great as it can be extended to heteroaromatic nitro derivatives and can be run on solid support. This review will focus on the use of the Bartoli indole synthesis as the key step in preparations of complex indoles, which appeared in the literature in the last few years.
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Affiliation(s)
- Giuseppe Bartoli
- Dipartimento Chimica Industriale 'Toso Montanari', Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy.
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10
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Abe T, Nakamura S, Yanada R, Choshi T, Hibino S, Ishikura M. One-Pot Construction of 3,3′-Bisindolylmethanes through Bartoli Indole Synthesis. Org Lett 2013; 15:3622-5. [DOI: 10.1021/ol401486s] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Takumi Abe
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hirokoshingai, Kure, Hiroshima 737-0112, Japan, and Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0292, Japan
| | - Shuuhei Nakamura
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hirokoshingai, Kure, Hiroshima 737-0112, Japan, and Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0292, Japan
| | - Reiko Yanada
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hirokoshingai, Kure, Hiroshima 737-0112, Japan, and Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0292, Japan
| | - Tominari Choshi
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hirokoshingai, Kure, Hiroshima 737-0112, Japan, and Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0292, Japan
| | - Satoshi Hibino
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hirokoshingai, Kure, Hiroshima 737-0112, Japan, and Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0292, Japan
| | - Minoru Ishikura
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Hokkaido 061-0293, Japan, Faculty of Pharmaceutical Sciences, Hiroshima International University, Hirokoshingai, Kure, Hiroshima 737-0112, Japan, and Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University, Fukuyama, Hiroshima 729-0292, Japan
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11
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Knepper K, Vanderheiden S, Bräse S. Synthesis of diverse indole libraries on polystyrene resin - Scope and limitations of an organometallic reaction on solid supports. Beilstein J Org Chem 2012; 8:1191-9. [PMID: 23019447 PMCID: PMC3458737 DOI: 10.3762/bjoc.8.132] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 06/06/2012] [Indexed: 11/23/2022] Open
Abstract
The synthesis of diverse substituted indole structures on solid supports is described. The immobilization of nitrobenzoic acid onto Merrifield resin and the subsequent treatment with alkenyl Grignard reagents delivered indole carboxylates bound to solid supports. In contrast to results in the liquid phase, ortho,ortho-unsubstituted nitroarenes also delivered indole moieties in good yields. Subsequent palladium-catalyzed reactions (Suzuki, Heck, Sonogashira, Stille) delivered, after cleavage, the desired molecules in moderate to good yields over four steps. The scope and limitations are presented.
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Affiliation(s)
- Kerstin Knepper
- Institute of Organic Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, D-76131 Karlsruhe, Germany
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12
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Sánchez JD, Egris R, Perumal S, Villacampa M, Menéndez JC. Aryl Grignard Reagents in Chemodivergent N- and C-Arylations: Concise Access to Two Families of Tetracyclic Fused Carbazoles from 6-Nitroquinolines. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101848] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Zhang F, Duan XF. Facile One-Pot Direct Arylation and Alkylation of Nitropyridine N-Oxides with Grignard Reagents. Org Lett 2011; 13:6102-5. [DOI: 10.1021/ol202597b] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fang Zhang
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Xin-Fang Duan
- College of Chemistry, Beijing Normal University, Beijing, 100875, China
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14
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Nishiwaki N. Chemistry of nitroquinolones and synthetic application to unnatural 1-methyl-2-quinolone derivatives. Molecules 2010; 15:5174-95. [PMID: 20714294 PMCID: PMC6257690 DOI: 10.3390/molecules15085174] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Revised: 07/28/2010] [Accepted: 07/30/2010] [Indexed: 11/30/2022] Open
Abstract
The 1-methyl-2-quinolone (MeQone) framework is often found in alkaloids and recently attention was drawn to unnatural MeQone derivatives with the aim of finding new biologically active compounds, however, low reactivity of the MeQone framework prevents the syntheses of versatile derivatives. A nitro group is one of the useful activating groups for this framework that enables a concise chemical transformation. Among nitroquinolones, 1-methyl-3,6,8-trinitro-2-quinolone (TNQ) exhibits unusual reactivity favoring region-selective cine-substitutions that afford 4-substituted 1-methyl-6,8-dinitro-2-quinolones upon treatment with nucleophilic reagents. Contrary to this, 1-methyl-3,6-dinitro-2-quinolone (3,6-DNQ) does not undergo any reaction under the same conditions. The unusual reactivity of TNQ is caused by steric repulsion between the methyl group at the 1-position and the nitro group at the 8-position, which distorts the MeQone framework. As a result, the pyridone ring of TNQ loses aromaticity and acts rather as an activated nitroalkene. Indeed, the pyridone moiety of TNQ undergoes cycloaddition with electron-rich alkenes or dienes under mild conditions, whereby a new fused ring is constructed on the [c]-face of the MeQone. Consequently, TNQ can be used as a new scaffold leading to versatile unnatural MeQone derivatives.
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Affiliation(s)
- Nagatoshi Nishiwaki
- School of Environmental Science and Engineering, Kochi University of Technology, Kami, Kochi, Japan.
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