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Chagarovskiy AO, Vasin VS, Kuznetsov VV, Ivanova OA, Rybakov VB, Shumsky AN, Makhova NN, Trushkov IV. (3+3)-Annulation of Donor-Acceptor Cyclopropanes with Diaziridines. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201805258] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Alexey O. Chagarovskiy
- Dmitry Rogachev National Research Center of, Pediatric Hematology; Oncology and Immunology; Samory Mashela, 1 Moscow 117997 Russian Federation
| | - Vladimir S. Vasin
- Dmitry Rogachev National Research Center of, Pediatric Hematology; Oncology and Immunology; Samory Mashela, 1 Moscow 117997 Russian Federation
| | - Vladimir V. Kuznetsov
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky pr. 47 Moscow 119991 Russian Federation
| | - Olga A. Ivanova
- Department of Chemistry; M. V. Lomonosov Moscow State University; Leninskie Gory, 1-3 Moscow 119991 Russian Federation
| | - Victor B. Rybakov
- Department of Chemistry; M. V. Lomonosov Moscow State University; Leninskie Gory, 1-3 Moscow 119991 Russian Federation
| | - Alexey N. Shumsky
- Emanuel Institute of Biochemical Physics; Russian Academy of Sciences; Kosygina 4 Moscow 119334 Russian Federation
| | - Nina N. Makhova
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky pr. 47 Moscow 119991 Russian Federation
| | - Igor V. Trushkov
- Dmitry Rogachev National Research Center of, Pediatric Hematology; Oncology and Immunology; Samory Mashela, 1 Moscow 117997 Russian Federation
- Faculty of Science; RUDN University; Miklukho-Maklaya 6 Moscow 117198 Russian Federation
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Chagarovskiy AO, Vasin VS, Kuznetsov VV, Ivanova OA, Rybakov VB, Shumsky AN, Makhova NN, Trushkov IV. (3+3)-Annulation of Donor-Acceptor Cyclopropanes with Diaziridines. Angew Chem Int Ed Engl 2018; 57:10338-10342. [PMID: 29936708 DOI: 10.1002/anie.201805258] [Citation(s) in RCA: 89] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 06/10/2018] [Indexed: 12/11/2022]
Abstract
The first example of (3+3)-annulation of two different three-membered rings is reported herein. Donor-acceptor cyclopropanes in reaction with diaziridines were found to afford perhydropyridazine derivatives in high yields and diastereoselectivity under mild Lewis acid catalysis. The disclosed reaction is applicable for the broad substrate scope and exhibits an excellent functional group tolerance.
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Affiliation(s)
- Alexey O Chagarovskiy
- Dmitry Rogachev National Research Center of, Pediatric Hematology, Oncology and Immunology, Samory Mashela, 1, Moscow, 117997, Russian Federation
| | - Vladimir S Vasin
- Dmitry Rogachev National Research Center of, Pediatric Hematology, Oncology and Immunology, Samory Mashela, 1, Moscow, 117997, Russian Federation
| | - Vladimir V Kuznetsov
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, Moscow, 119991, Russian Federation
| | - Olga A Ivanova
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow, 119991, Russian Federation
| | - Victor B Rybakov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory, 1-3, Moscow, 119991, Russian Federation
| | - Alexey N Shumsky
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, Kosygina 4, Moscow, 119334, Russian Federation
| | - Nina N Makhova
- N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky pr. 47, Moscow, 119991, Russian Federation
| | - Igor V Trushkov
- Dmitry Rogachev National Research Center of, Pediatric Hematology, Oncology and Immunology, Samory Mashela, 1, Moscow, 117997, Russian Federation.,Faculty of Science, RUDN University, Miklukho-Maklaya 6, Moscow, 117198, Russian Federation
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53
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Kottisch V, Supej MJ, Fors BP. Enhancing Temporal Control and Enabling Chain-End Modification in Photoregulated Cationic Polymerizations by Using Iridium-Based Catalysts. Angew Chem Int Ed Engl 2018; 57:8260-8264. [PMID: 29750387 DOI: 10.1002/anie.201804111] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/01/2018] [Indexed: 11/11/2022]
Abstract
Gaining temporal control over chain growth is a key challenge in the enhancement of controlled living polymerizations. Though research on photocontrolled polymerizations is still in its infancy, it has already proven useful in the development of previously inaccessible materials. Photocontrol has now been extended to cationic polymerizations using 2,4,6-triarylpyrylium salts as photocatalysts. Despite the ability to stop polymerization for a short time, monomer conversion was observed over long dark periods. Improved catalyst systems based on Ir complexes give optimal temporal control over chain growth. The excellent stability of these complexes and the ability to tune the excited and ground state redox potentials to regulate the number of monomer additions per cation formed allows polymerization to be halted for more than 20 hours. The excellent stability of these iridium catalysts in the presence of more nucleophilic species enables chain-end functionalization of these polymers.
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Affiliation(s)
- Veronika Kottisch
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, 14853, Ithaca, USA
| | - Michael J Supej
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, 14853, Ithaca, USA
| | - Brett P Fors
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, 14853, Ithaca, USA
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Kottisch V, Supej MJ, Fors BP. Enhancing Temporal Control and Enabling Chain‐End Modification in Photoregulated Cationic Polymerizations by Using Iridium‐Based Catalysts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Veronika Kottisch
- Department of Chemistry and Chemical Biology Cornell University Baker Lab 14853 Ithaca USA
| | - Michael J. Supej
- Department of Chemistry and Chemical Biology Cornell University Baker Lab 14853 Ithaca USA
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology Cornell University Baker Lab 14853 Ithaca USA
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55
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Sebők-Nagy K, Rózsár D, Puskás LG, Balázs Á, Páli T. Electron paramagnetic resonance spectroscopic studies of the electron transfer reaction of Hantzsch ester and a pyrylium salt. RSC Adv 2018; 8:29924-29927. [PMID: 35547277 PMCID: PMC9085297 DOI: 10.1039/c8ra05693e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 08/13/2018] [Indexed: 12/01/2022] Open
Abstract
The oxidation of Hantzsch ester by a pyrylium cation takes place via electron–proton–electron transfer. The reaction was investigated with EPR spectroscopy using TEMPO and DMPO for inhibition and spin trapping, respectively, of the radicals appearing during the reaction. The present in-depth EPR study of the radical reactions of a NADH analogue indicate a complex electron transfer mechanism in the title reaction. The oxidation of Hantzsch ester by a pyrylium cation takes 3 place via electron–proton–electron transfer. The present in-depth EPR study of the radical reactions of a NADH analogue indicate a complex electron transfer mechanism in the title reaction.![]()
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Affiliation(s)
- K. Sebők-Nagy
- Institute of Biophysics
- Biological Research Centre
- Hungarian Academy of Sciences
- H-6726 Szeged
- Hungary
| | | | | | | | - T. Páli
- Institute of Biophysics
- Biological Research Centre
- Hungarian Academy of Sciences
- H-6726 Szeged
- Hungary
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56
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Jang GS, Lee J, Seo J, Woo SK. Synthesis of 4-Isoxazolines via Visible-Light Photoredox-Catalyzed [3 + 2] Cycloaddition of Oxaziridines with Alkynes. Org Lett 2017; 19:6448-6451. [DOI: 10.1021/acs.orglett.7b03369] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Gwang Seok Jang
- Department of Chemistry, University of Ulsan, 93 Daehak-Ro, Nam-Gu, Ulsan 44610, Korea
| | - Junggeun Lee
- Department of Chemistry, University of Ulsan, 93 Daehak-Ro, Nam-Gu, Ulsan 44610, Korea
| | - Jungseok Seo
- Department of Chemistry, University of Ulsan, 93 Daehak-Ro, Nam-Gu, Ulsan 44610, Korea
| | - Sang Kook Woo
- Department of Chemistry, University of Ulsan, 93 Daehak-Ro, Nam-Gu, Ulsan 44610, Korea
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Du Y, Pearson RM, Lim CH, Sartor SM, Ryan MD, Yang H, Damrauer NH, Miyake GM. Strongly Reducing, Visible-Light Organic Photoredox Catalysts as Sustainable Alternatives to Precious Metals. Chemistry 2017; 23:10962-10968. [PMID: 28654171 PMCID: PMC5941304 DOI: 10.1002/chem.201702926] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Indexed: 12/30/2022]
Abstract
Photoredox catalysis is a versatile approach for the construction of challenging covalent bonds under mild reaction conditions, commonly using photoredox catalysts (PCs) derived from precious metals. As such, there is need to develop organic analogues as sustainable replacements. Although several organic PCs have been introduced, there remains a lack of strongly reducing, visible-light organic PCs. Herein, we establish the critical photophysical and electrochemical characteristics of both a dihydrophenazine and a phenoxazine system that enables their success as strongly reducing, visible-light PCs for trifluoromethylation reactions and dual photoredox/nickel-catalyzed C-N and C-S cross-coupling reactions, both of which have been historically exclusive to precious metal PCs.
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Affiliation(s)
- Ya Du
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
| | - Ryan M Pearson
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
| | - Chern-Hooi Lim
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
| | - Steven M Sartor
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
| | - Matthew D Ryan
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
| | - Haishen Yang
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
- Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power, College of Environmental and Chemical Engineering, Shanghai University of Electric Power, Shanghai, 200090, P. R. China
| | - Niels H Damrauer
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
- Materials Science and Engineering Program, University of Colorado at Boulder, 596 UCB, Boulder, Colorado, 80309-0596, USA
| | - Garret M Miyake
- Department of Chemistry and Biochemistry, University of Colorado at Boulder, 215 UCB, Boulder, Colorado, 80309-0215, USA
- Materials Science and Engineering Program, University of Colorado at Boulder, 596 UCB, Boulder, Colorado, 80309-0596, USA
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