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Bage AD, Nicholson K, Hunt TA, Langer T, Thomas SP. The Hidden Role of Boranes and Borohydrides in Hydroboration Catalysis. ACS Catal 2020. [DOI: 10.1021/acscatal.0c04051] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Andrew D. Bage
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, United Kingdom
| | - Kieran Nicholson
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, United Kingdom
| | - Thomas A. Hunt
- Medicinal Chemistry, Early Oncology, AstraZeneca, Unit 310, Cambridge Science Park, Milton Road, Cambridge, CB4 0WG, United Kingdom
| | - Thomas Langer
- Pharmaceutical Technology & Development, Chemical Development U.K., AstraZeneca, Silk Road, Macclesfield, SK10 2NA, United Kingdom
| | - Stephen P. Thomas
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, United Kingdom
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2
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Fan W, Yamago S. Synthesis of Poly(N-vinylamide)s and Poly(vinylamine)s and Their Block Copolymers by Organotellurium-Mediated Radical Polymerization. Angew Chem Int Ed Engl 2019; 58:7113-7116. [PMID: 30920088 DOI: 10.1002/anie.201902940] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 03/27/2019] [Indexed: 11/10/2022]
Abstract
Controlled polymerization of acyclic N-vinylamides, that is, N-methyl-N-vinylacetamide (NMVA), N-vinylacetamide (NVA), and N-vinylformamide (NVF), by organotellurium-mediated radical polymerization (TERP) is reported. The corresponding poly(N-vinylamide)s with controlled molecular weight and low dispersity (Ð<1.25) were obtained with high monomer conversion in all cases. This is the first report on the controlled polymerization of NVF. Hydrolysis of the polymers, in particular PNVF, occurred quantitatively under mild reaction conditions, giving structurally controlled poly(vinylamine)s. Block copolymers containing poly(N-vinylamide) and poly(vinylamine) segments were also synthesized in a controlled manner.
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Affiliation(s)
- Weijia Fan
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
| | - Shigeru Yamago
- Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan
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3
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Fan W, Yamago S. Synthesis of Poly(
N
‐vinylamide)s and Poly(vinylamine)s and Their Block Copolymers by Organotellurium‐Mediated Radical Polymerization. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Weijia Fan
- Institute for Chemical ResearchKyoto University Uji Kyoto 611-0011 Japan
| | - Shigeru Yamago
- Institute for Chemical ResearchKyoto University Uji Kyoto 611-0011 Japan
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4
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Sun R, Yang X, Chen X, Zhang C, Zhao X, Wang X, Zheng X, Yuan M, Fu H, Li R, Chen H. Rh(III)-Catalyzed [4 + 2] Self-Annulation of N-Vinylarylamides. Org Lett 2018; 20:6755-6759. [PMID: 30346794 DOI: 10.1021/acs.orglett.8b02872] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
An efficient rhodium(III)-catalyzed self-annulation of N-vinylarylamide has been developed. This reaction features a simple system and good reactivity with complete regioselectivity. The protocol provides easy access to an aminal incorporated dihydroisoquinolinone, which proved to be a versatile synthetic synthon. The kinetic isotope effect experiments showed that C-H activation is the rate-limiting step, and competition studies revealed the annulation exhibits a strong self-recognition mode. In addition, a seven-membered rhodacycle species was isolated and established as the key reaction intermediate.
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Affiliation(s)
- Rui Sun
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Xiao Yang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Xue Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Chunchun Zhang
- Analytical & Testing Center , Sichuan University , Chengdu , Sichuan 610064 , P. R. China
| | - Xiaoyu Zhao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Xin Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry , Sichuan University Chengdu 610064 , P. R. China
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A dehydrative arylation and thiolation of tertiary alcohols catalyzed by in situ generated triflic acid - Viable protocol for C C and C S bond formation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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6
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Fukuzawa H, Aoyagi N, Sato R, Kataoka Y, Ura Y. Ruthenacyclopentanes as Intermediates in the Regio- and Stereoselective Linear Codimerization of N-Vinylamides with Electron-Deficient Alkenes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroko Fukuzawa
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Nozomi Aoyagi
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Ruriko Sato
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Yasutaka Kataoka
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Yasuyuki Ura
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
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Schlegel M, Schneider C. Lewis Acid-Catalyzed Nucleophilic Addition of Indoles to in Situ-Generated 2-Amidoallyl Cations. J Org Chem 2017; 82:5986-5992. [DOI: 10.1021/acs.joc.7b00791] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Marcel Schlegel
- Institut für Organische
Chemie, University of Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
| | - Christoph Schneider
- Institut für Organische
Chemie, University of Leipzig, Johannisallee 29, D-04103 Leipzig, Germany
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Liu HM, Lu W, Luo CP, Yang L. Pd-catalyzed chemo- and regioselective cross-coupling of two enamides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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Preindl J, Jouvin K, Laurich D, Seidel G, Fürstner A. Gold- or Silver-Catalyzed Syntheses of Pyrones and Pyridine Derivatives: Mechanistic and Synthetic Aspects. Chemistry 2015; 22:237-47. [DOI: 10.1002/chem.201503403] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 01/18/2023]
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Chan PWH, Teo WT, Koh SWY, Lee BR, Ayers BJ, Ma DL, Leung CH. Silver Triflate Catalyzed Cyclopropyl Carbinol Rearrangement for Benzo[b]oxepine and 2H-Chromene Synthesis. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500374] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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12
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Greenhalgh MD, Jones AS, Thomas SP. Iron-Catalysed Hydrofunctionalisation of Alkenes and Alkynes. ChemCatChem 2014. [DOI: 10.1002/cctc.201402693] [Citation(s) in RCA: 260] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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