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Wang P, Zhao Q, Xiao W, Chen J. Recent advances in visible-light photoredox-catalyzed nitrogen radical cyclization. GREEN SYNTHESIS AND CATALYSIS 2020. [DOI: 10.1016/j.gresc.2020.05.003] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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2
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Kamimura A, Itaya T, Yoshinaga T, Nozawa R, Kawamoto T, Sumimoto M, Uno H. Highly Cumulated Radical Cascade Reaction of aza-1,6-Enyenes: Stereoselective Synthesis of exo
-Methylene Piperidines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Akio Kamimura
- Department Applied Chemistry; Yamaguchi University; 755-8611 Ube Japan
| | - Tomoyuki Itaya
- Department Applied Chemistry; Yamaguchi University; 755-8611 Ube Japan
| | - Tatsuro Yoshinaga
- Department Applied Chemistry; Yamaguchi University; 755-8611 Ube Japan
| | - Ryo Nozawa
- Department Applied Chemistry; Yamaguchi University; 755-8611 Ube Japan
| | - Takuji Kawamoto
- Department Applied Chemistry; Yamaguchi University; 755-8611 Ube Japan
| | - Michinori Sumimoto
- Department Environmental Chemistry; Yamaguchi University; 755-8611 Ube Japan
| | - Hidemitsu Uno
- Department of Chemistry; Ehime University; 790-8577 Matsuyama Japan
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3
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Kamimura A, Miyazaki K, Kawamoto T, Uno H. A radical cascade reaction of aza-1,6-enyne compounds using allyltributyltin. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Zhou L, Lokman Hossain M, Xiao T. Synthesis ofN-Containing Heterocyclic Compounds Using Visible-light Photoredox Catalysis. CHEM REC 2016; 16:319-34. [PMID: 26751828 DOI: 10.1002/tcr.201500228] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Indexed: 12/24/2022]
Affiliation(s)
- Lei Zhou
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 P. R. China
| | | | - Tiebo Xiao
- School of Chemistry and Chemical Engineering; Sun Yat-Sen University; 135 Xingang West Road Guangzhou 510275 P. R. China
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5
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Kamimura A, Yoshinaga T, Noguchi F, Miyazaki K, Uno H. A mechanistic study on the SHi reaction at tin atoms in a radical cascade reaction. Org Chem Front 2015. [DOI: 10.1039/c5qo00063g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A kinetic study on the intramolecular direct radical substitution reaction on tin atoms was undertaken.
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Affiliation(s)
- Akio Kamimura
- Department of Applied Molecular Bioscience
- Graduate School of Medicine
- Yamaguchi University
- Ube 755-8611
- Japan
| | - Tatsuro Yoshinaga
- Department of Applied Chemistry
- Faculty of Engineering
- Yamaguchi University
- Ube 755-8611
- Japan
| | - Fumiaki Noguchi
- Department of Applied Molecular Bioscience
- Graduate School of Medicine
- Yamaguchi University
- Ube 755-8611
- Japan
| | - Koichiro Miyazaki
- Department of Applied Molecular Bioscience
- Graduate School of Medicine
- Yamaguchi University
- Ube 755-8611
- Japan
| | - Hidemitsu Uno
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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6
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Cascade cyclization of 1-(2-yl-3-phenylprop-2-enyl)-6-oxo-1,6-dihydropyridine-2-carbonitrile radical: Mechanistic insights from DFT study. COMPUT THEOR CHEM 2014. [DOI: 10.1016/j.comptc.2014.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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7
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Liu Y, Zhang JL, Song RJ, Li JH. Visible-Light-Facilitated 5-exo-trigCyclization of 1,6-Dienes with Alkyl Chlorides: Selective Scission of the C(sp3)-H Bond in Alkyl Chlorides. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301849] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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8
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Kamimura A, Ishikawa S. A New Heterocyclic Synthesis Using Asymmetric aza-Morita-Baylis-Hillman Equivalent Reaction. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.929] [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]
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9
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Kamimura A, Miyazaki K, Yamane Y, Yo R, Ishikawa S, Uno H, Sumimoto M. A Radical Cascade Cyclization To Prepare Dihydrothiophenes Induced by Thiyl Radicals as Sulfur Biradical Equivalents. J Org Chem 2013; 78:7816-22. [DOI: 10.1021/jo400975t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akio Kamimura
- Department of Applied Molecular
Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Koichiro Miyazaki
- Department of Applied Molecular
Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Yu Yamane
- Department of Applied Molecular
Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Ryuichiro Yo
- Department of Applied Molecular
Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Shingo Ishikawa
- Department of Applied Molecular
Science, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Hidemitsu Uno
- Department of Chemistry, Graduate
School of Science and Engineering, Ehime University, Matsuyama 790-8577, Japan
| | - Michinori Sumimoto
- Department of Material Chemistry,
Graduate School of Science and Engineering, Yamaguchi University, Ube 755-8611, Japan
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Miyazaki K, Yamane Y, Yo R, Uno H, Kamimura A. Preparation of optically active bicyclodihydrosiloles by a radical cascade reaction. Beilstein J Org Chem 2013; 9:1326-32. [PMID: 23946827 PMCID: PMC3740799 DOI: 10.3762/bjoc.9.149] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Accepted: 06/18/2013] [Indexed: 12/03/2022] Open
Abstract
Bicyclodihydrosiloles were readily prepared from optically active enyne compounds by a radical cascade reaction triggered by tris(trimethylsilyl)silane ((Me3Si)3SiH). The reaction was initiated by the addition of a silyl radical to an α,β-unsaturated ester, forming an α-carbonyl radical that underwent radical cyclization to a terminal alkyne unit. The resulting vinyl radical attacked the silicon atom in an SHi manner to give dihydrosilole. The reaction preferentially formed trans isomers of bicyclosiloles with an approximately 7:3 to 9:1 selectivity.
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Affiliation(s)
- Koichiro Miyazaki
- Department of Applied Molecular Bioscience, Graduate School of Medicine, Yamaguchi University, Ube 755-8611, Japan
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11
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Kamimura A, Yamane Y, Uno H. Preparation of Optically Active 4-Aminopyrrolidines by Radical Addition/Cyclization to Chiral N-(2-(Methoxyimino)Ethyl)-β-Amino-α-Methylene Esters. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2012.736893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Akio Kamimura
- a Department of Applied Molecular Bioscience , Graduate School of Medicine, Yamaguchi University , Ube , 755-8611 , Japan
| | - Yu Yamane
- a Department of Applied Molecular Bioscience , Graduate School of Medicine, Yamaguchi University , Ube , 755-8611 , Japan
| | - Hidemitsu Uno
- b Department of Chemistry, Graduate School of Science and Engineering , Ehime University , Matsuyama , 790-8577 , Japan
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12
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Kamimura A, Kotake T, Ishihara Y, So M, Hayashi T. Kinetic Study of the 7-endo Selective Radical Cyclization of N-tert-Butyl-o-bromobenzylmethacryl Amides: Kinetic Investigation of the Cyclization and 1,7-Hydrogen Transfer of Aromatic Radicals. J Org Chem 2013; 78:3961-71. [DOI: 10.1021/jo400326b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Akio Kamimura
- Department of Applied Molecular Bioscience,
Graduate
School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Tomoko Kotake
- Department of Applied Molecular Bioscience,
Graduate
School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Yuriko Ishihara
- Department of Applied Molecular Bioscience,
Graduate
School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Masahiro So
- Department of Applied Molecular Bioscience,
Graduate
School of Medicine, Yamaguchi University, Ube 755-8611, Japan
| | - Takahiro Hayashi
- Department of Applied Molecular Bioscience,
Graduate
School of Medicine, Yamaguchi University, Ube 755-8611, Japan
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Microwave promoted improved regioselective synthesis of 1H,3H,6H[2]benzopyrano[4,3-d]pyrimidine-2,4-diones by radical cyclisation. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0171-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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14
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Kamimura A, Ishikawa S, Noguchi F, Moriyama T, So M, Murafuji T, Uno H. Unexpected formation of stannolanes and trigonal bipyramidal tin complexes by radical cyclization reaction. Chem Commun (Camb) 2012; 48:6592-4. [DOI: 10.1039/c2cc31753b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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de Oliveira MT, Cesar A, Leal DHS, Prado MAF, da Silva THÁ, Alves RJ. Unravelling the stereoselectivity in 6-exo-trig radical cyclization of α,β-unsaturated ester-tethered sugars. A tale of two stereocenters. Org Biomol Chem 2010; 8:1619-22. [DOI: 10.1039/b923414d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Muñoz-Molina JM, Belderraín T, Pérez P. Copper-Catalyzed Synthesis of 1,2-Disubstituted Cyclopentanes from 1,6-Dienes by Ring-Closing Kharasch Addition of Carbon Tetrachloride. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800364] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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18
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Taniguchi T, Ishibashi H. Short Synthesis of (−)-Cephalotaxine Using a Radical Cascade. Org Lett 2008; 10:4129-31. [DOI: 10.1021/ol801747m] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tsuyoshi Taniguchi
- Division of Pharmaceutical Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Hiroyuki Ishibashi
- Division of Pharmaceutical Sciences, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
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Synthesis of nitrogen-containing heterocycles using exo- and endo-selective radical cyclizations onto enamides. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.01.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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21
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Majumdar KC, Basu PK, Chattopadhyay SK. Formation of five- and six-membered heterocyclic rings under radical cyclisation conditions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2006.09.049] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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22
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James P, Schenk K, Landais Y. Radical-Mediated 5-Exo-TrigCyclizations of 3-Silylhepta-1,6-dienes. J Org Chem 2006; 71:3630-3. [PMID: 16626154 DOI: 10.1021/jo060024+] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regioselectivity of the sulfonyl radical mediated 5-exo-trig cyclization of 3-silylheptadienyl systems 3a-d has been studied. At low temperature, the reaction of the sulfonyl radical occurs regioselectively at the allylsilane terminus, while a reversal of regioselectivity is observed at 80 degrees C. This general trend has been rationalized on the basis of polar effects and radical stabilization. Thiyl-mediated radical cyclization of dienes 3a, 3c-d, 7 with subsequent sulfur atom transfer was also studied, providing thiabicyclo[3.3.0] skeleton in one step with excellent stereocontrol.
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Affiliation(s)
- Philippe James
- Laboratoire de Chimie Organique et Organométallique, Université Bordeaux-I, 351 Cours de la Libération, 33405 Talence Cedex, France
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Edlin CD, Faulkner J, Helliwell M, Knight CK, Parker J, Quayle P, Raftery J. Atom transfer radical cyclization reactions (ATRC): synthetic applications. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.01.038] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Belen’kii L, Gramenitskaya V, Evdokimenkova Y. The Literature of Heterocyclic Chemistry, Part IX, 2002–2004. ADVANCES IN HETEROCYCLIC CHEMISTRY 2006. [DOI: 10.1016/s0065-2725(06)92004-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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25
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Majumdar KC, Basu PK, Mukhopadhyay PP. Formation of five- and six-membered heterocyclic rings under radical cyclisation conditions. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.07.079] [Citation(s) in RCA: 77] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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James P, Felpin FX, Landais Y, Schenk K. Free-Radical-5-exo-Trig Cyclization of Chiral 3-Silylhepta-1,6-dienes: Concise Approach to the A−B−C Ring Core of Hexacyclinic Acid. J Org Chem 2005; 70:7985-95. [PMID: 16277319 DOI: 10.1021/jo051062g] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[Chemical reaction: See text] Free-radical-mediated 5-exo-trig cyclization of hepta-1,6-dienes 6a-c incorporating an allylsilane moiety was shown to provide at low temperature exclusively the trans-cis cyclopentanes 7a-c in good yield. In contrast, the same reaction with the alkyl analogue 9a led to the formation of all four possible stereoisomers. Interestingly, extension of this sequence of radical processes to alkoxy analogues 12-14 provided the complementary cis-cis stereoisomers with modest to excellent stereoselectivity. It is noteworthy that under such conditions allylsilanes were found to be much more reactive than their alkyl and alkoxy analogues. Beckwith-Houk-type models were proposed that rationalize the stereochemical course of these 5-exo-trig cyclizations. Finally, an illustration of the value of this methodology was proposed with the synthesis of the A-B-C tricyclic unit of polyketide hexacyclinic acid 3a.
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Affiliation(s)
- Philippe James
- Université Bordeaux-I, Laboratoire de Chimie Organique et Organométallique, 351, Cours de la Libération, 33405 Talence Cedex, France
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28
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Six-membered ring systems: with O and/or S atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/s0959-6380(05)80337-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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