1
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Ogawa A, Yamamoto Y. Multicomponent Reactions between Heteroatom Compounds and Unsaturated Compounds in Radical Reactions. Molecules 2023; 28:6356. [PMID: 37687185 PMCID: PMC10488953 DOI: 10.3390/molecules28176356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/18/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
In this mini-review, we present our concepts for designing multicomponent reactions with reference to a series of sequential radical reactions that we have developed. Radical reactions are well suited for the design of multicomponent reactions due to their high functional group tolerance and low solvent sensitivity. We have focused on the photolysis of interelement compounds with a heteroatom-heteroatom single bond, which readily generates heteroatom-centered radicals, and have studied the photoinduced radical addition of interelement compounds to unsaturated compounds. First, the background of multicomponent radical reactions is described, and basic concepts and methodology for the construction of multicomponent reactions are explained. Next, examples of multicomponent reactions involving two interelement compounds and one unsaturated compound are presented, as well as examples of multicomponent reactions involving one interelement compound and two unsaturated compounds. Furthermore, multicomponent reactions involving intramolecular cyclization processes are described.
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Affiliation(s)
- Akiya Ogawa
- Organization for Research Promotion, Osaka Metropolitan University, 1-1 Gakuen-cho, Nakaku, Sakai, Osaka 599-8531, Japan
| | - Yuki Yamamoto
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-4-37 Takeda, Kofu 400-8510, Japan;
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2
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Fuentes-Ríos D, Muñoz C, Díaz A, Sarabia F, López-Romero JM. Diastereoselective C-alkylation of aldimines, derived from chiral α-carbon heteroatom-substituted aldehydes, with triethylborane. Application to the synthesis of benzylisoquinolines. RSC Adv 2023; 13:8976-8984. [PMID: 36936855 PMCID: PMC10022415 DOI: 10.1039/d3ra01397a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 03/13/2023] [Indexed: 03/19/2023] Open
Abstract
The one-pot reaction of a chiral aldehyde, p-methoxyaniline or p-fluoroaniline, and triethylborane produces the corresponding alkylated chiral amine with high yields and diastereoisomeric ratios. Stereocontrol is induced by the presence of a heteroatom in the α-position to the aldehyde. In the case of alkylation of imines derived from chiral aliphatic amines, good yields and moderate to high diastereoselectivity are obtained: yields are significantly better when the preformed imine is used in the reaction with triethyl borane, and diastereoselectivity of the reactions largely depends on the structure of the chiral aliphatic amine. The methodology is successfully applied to the synthesis of romneine, a natural benzylisoquinoline.
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Affiliation(s)
- David Fuentes-Ríos
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga Campus de Teatinos s/n 29071-Málaga Spain
| | - Carmen Muñoz
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga Campus de Teatinos s/n 29071-Málaga Spain
| | - Amelia Díaz
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga Campus de Teatinos s/n 29071-Málaga Spain
| | - Francisco Sarabia
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga Campus de Teatinos s/n 29071-Málaga Spain
| | - J Manuel López-Romero
- Department of Organic Chemistry, Faculty of Sciences, University of Malaga Campus de Teatinos s/n 29071-Málaga Spain
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3
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Cao Y, Zhang S, Antilla JC. Catalytic Asymmetric 1,4-Reduction of α-Branched 2-Vinyl-azaarenes by a Chiral SPINOL-Derived Borophosphate. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02563] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yang Cao
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Shouqi Zhang
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jon C. Antilla
- Institute for Molecular Design and Synthesis, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, P. R. China
- School of Sciences, Zhejiang Sci-Tech University, Hangzhou City, Zhejiang Province 310018, P. R. China
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4
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Oikawa M, Sugeno Y, Tukada H, Takasaki Y, Takamizawa S, Irie R. Four Stereoisomers of 2-Aminomethyl-1-cyclopropanecarboxylic Acid: Synthesis and Biological Evaluation. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2019. [DOI: 10.1246/bcsj.20190168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Masato Oikawa
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Yuka Sugeno
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Hideyuki Tukada
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Yuichi Takasaki
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Satoshi Takamizawa
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
| | - Raku Irie
- Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027, Japan
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5
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Qi J, Tang H, Chen C, Cui S, Xu G. Reductive coupling of alkenes with unsaturated imines via a radical pathway. Org Chem Front 2019. [DOI: 10.1039/c9qo00653b] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reductive coupling of alkenes with unsaturated imines via a radical pathway is described.
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Affiliation(s)
- Jifeng Qi
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Haibin Tang
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- P. R. China
| | - Changwei Chen
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Sunliang Cui
- Institute of Drug Discovery and Design
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou 310058
- China
| | - Gang Xu
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- P. R. China
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6
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Ueda M, Takeda N, Miyata O. Synthesis of Heterocycles by Utilizing Characteristic Features of Imines and Amides bearing the Alkoxy Group. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.584] [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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7
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Slater KA, Friestad GK. Mn-Mediated Radical-Ionic Annulations of Chiral N-Acylhydrazones. J Org Chem 2015; 80:6432-40. [DOI: 10.1021/acs.joc.5b00863] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kara A. Slater
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Gregory K. Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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8
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Du P, Li H, Wang Y, Cheng J, Wan X. Radical–Polar Crossover Reactions: Oxidative Coupling of 1,3-Dioxolanes with Electron-Deficient Alkenes and Vinylarenes Based on a Radical Addition and Kornblum–DeLaMare Rearrangement. Org Lett 2014; 16:6350-3. [DOI: 10.1021/ol503128j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Peng Du
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Huihuang Li
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yaxiong Wang
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jiang Cheng
- Key
Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China
| | - Xiaobing Wan
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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9
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Ueda M, Ito Y, Ichii Y, Kakiuchi M, Shono H, Miyata O. Direct Synthesis of Benzofuro[2,3-b]pyrroles through a Radical Addition/[3,3]-Sigmatropic Rearrangement/Cyclization/Lactamization Cascade. Chemistry 2014; 20:6763-70. [DOI: 10.1002/chem.201402217] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Indexed: 11/11/2022]
Affiliation(s)
- Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558 (Japan), Fax: (+81)78-441-7554
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10
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Sakaguchi Y, Kurono N, Yamauchi K, Ohkuma T. Asymmetric Conjugate Hydrocyanation of α,β-Unsaturated N-Acylpyrroles with the Ru(phgly)2(binap)–CH3OLi Catalyst System. Org Lett 2014; 16:808-11. [DOI: 10.1021/ol403545b] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yusuke Sakaguchi
- Division
of Chemical Process
Engineering and Frontier Chemistry Center, Faculty of
Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Nobuhito Kurono
- Division
of Chemical Process
Engineering and Frontier Chemistry Center, Faculty of
Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Kohei Yamauchi
- Division
of Chemical Process
Engineering and Frontier Chemistry Center, Faculty of
Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
| | - Takeshi Ohkuma
- Division
of Chemical Process
Engineering and Frontier Chemistry Center, Faculty of
Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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11
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Miyata O, Ueda M, Ito Y, Matsuda N, Nishida Y. Sequential Radical Addition and Fischer-Type Indolization Reactions of Conjugated Hydrazones for the Preparation of α-Alkylindole-3-acetic Acids. HETEROCYCLES 2014. [DOI: 10.3987/com-14-12957] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Friestad GK. Control of asymmetry in the radical addition approach to chiral amine synthesis. Top Curr Chem (Cham) 2014; 343:1-32. [PMID: 24085561 PMCID: PMC4114248 DOI: 10.1007/128_2013_481] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The state-of-the-science in asymmetric free radical additions to imino compounds is presented, beginning with an overview of methods involving stereocontrol by various chiral auxiliary approaches. Chiral N-acylhydrazones are discussed with respect to their use as radical acceptors for Mn-mediated intermolecular additions, from design to scope surveys to applications to biologically active targets. A variety of aldehydes and ketones serve as viable precursors for the chiral hydrazones, and a variety of alkyl iodides may be employed as radical precursors, as discussed in a critical review of the functional group compatibility of the reaction. Applications to amino acid and alkaloid synthesis are presented to illustrate the synthetic potential of these versatile stereocontrolled carbon-carbon bond construction reactions. Asymmetric catalysis is discussed, from seminal work on the stereocontrol of radical addition to imino compounds by non-covalent interactions with stoichiometric amounts of catalysts, to more recent examples demonstrating catalyst turnover.
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13
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Ueda M, Ono A, Nakao D, Matsuno K, Naito T, Miyata O. Total synthesis of penmacric acids via an intermolecular radical addition reaction. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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14
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Miyabe H, Asada R, Takemoto Y. Cascade radical reaction of substrates with a carbon-carbon triple bond as a radical acceptor. Beilstein J Org Chem 2013; 9:1148-55. [PMID: 23843907 PMCID: PMC3701377 DOI: 10.3762/bjoc.9.128] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 05/22/2013] [Indexed: 11/24/2022] Open
Abstract
The limitation of hydroxamate ester as a chiral Lewis acid coordination moiety was first shown in an intermolecular reaction involving a radical addition and sequential allylation processes. Next, the effect of hydroxamate ester was studied in the cascade addition–cyclization–trapping reaction of substrates with a carbon–carbon triple bond as a radical acceptor. When substrates with a methacryloyl moiety and a carbon–carbon triple bond as two polarity-different radical acceptors were employed, the cascade reaction proceeded effectively. A high level of enantioselectivity was also obtained by a proper combination of chiral Lewis acid and these substrates.
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Affiliation(s)
- Hideto Miyabe
- School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Chuo-ku, Kobe 650-8530, Japan ; Graduate School of Pharmaceutical Sciences, Kyoto University, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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15
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Friestad GK, Ji A, Baltrusaitis J, Korapala CS, Qin J. Scope of Stereoselective Mn-Mediated Radical Addition to Chiral Hydrazones and Application in a Formal Synthesis of Quinine. J Org Chem 2012; 77:3159-80. [DOI: 10.1021/jo2026349] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Gregory K. Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - An Ji
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Jonas Baltrusaitis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | | | - Jun Qin
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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16
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Ueda M, Naito T, Miyata O. Development of Domino Reactions Based on Radical Addition Reaction to Conjugated Oxime Ethers. J SYN ORG CHEM JPN 2012. [DOI: 10.5059/yukigoseikyokaishi.70.331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Friestad GK, Ji A, Korapala CS, Qin J. Intermolecular radical addition to N-acylhydrazones as a stereocontrol strategy for alkaloid synthesis: formal synthesis of quinine. Org Biomol Chem 2011; 9:4039-43. [PMID: 21537510 PMCID: PMC4114234 DOI: 10.1039/c1ob05219e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Stereocontrolled Mn-mediated radical addition of alkyl iodides to chiral N-acylhydrazones enables strategic C-C bond disconnection of chiral amines. This strategy was examined in the context of a total synthesis of quinine, generating new findings of functional group compatibility leading to a revised strategy. Completion of a formal synthesis of quinine is presented, validating the application of Mn-mediated radical addition as a useful new C-C bond construction method for alkaloid synthesis. The Mn-mediated addition generates the chiral amine substructure of quinine with complete stereocontrol. Subsequent elaboration includes two successive ring closures to forge the azabicyclo[2.2.2]octane ring system of quincorine, linked to quinine through two known reactions.
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Affiliation(s)
- Gregory K Friestad
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
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18
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Ueda M, Ikeda Y, Sato A, Ito Y, Kakiuchi M, Shono H, Miyoshi T, Naito T, Miyata O. Silver-catalyzed synthesis of disubstituted isoxazoles by cyclization of alkynyl oxime ethers. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.083] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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19
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Ueda M, Matsubara H, Yoshida KI, Sato A, Naito T, Miyata O. Regiodivergent Addition of Carbon Units to Dual-Activated Alkynes for Stereoselective Construction of Tetrasubstituted Alkenes. Chemistry 2011; 17:1789-92. [DOI: 10.1002/chem.201002744] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2010] [Indexed: 11/06/2022]
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20
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Radical Additions to Chiral Hydrazones: Stereoselectivity and Functional Group Compatibility. Top Curr Chem (Cham) 2011; 320:61-91. [DOI: 10.1007/128_2011_163] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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21
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Miyoshi T, Miyakawa T, Ueda M, Miyata O. Nucleophilic α-Arylation and α-Alkylation of Ketones by Polarity Inversion of N-Alkoxyenamines: Entry to the Umpolung Reaction at the α-Carbon Position of Carbonyl Compounds. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201004374] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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22
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Miyoshi T, Miyakawa T, Ueda M, Miyata O. Nucleophilic α-Arylation and α-Alkylation of Ketones by Polarity Inversion of N-Alkoxyenamines: Entry to the Umpolung Reaction at the α-Carbon Position of Carbonyl Compounds. Angew Chem Int Ed Engl 2010; 50:928-31. [DOI: 10.1002/anie.201004374] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2010] [Revised: 10/04/2010] [Indexed: 11/06/2022]
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23
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Ueda M, Sato A, Ikeda Y, Miyoshi T, Naito T, Miyata O. Direct Synthesis of Trisubstituted Isoxazoles through Gold-Catalyzed Domino Reaction of Alkynyl Oxime Ethers. Org Lett 2010; 12:2594-7. [DOI: 10.1021/ol100803e] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Aoi Sato
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Yuki Ikeda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Tetsuya Miyoshi
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Takeaki Naito
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan
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25
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Ueda M, Miyabe H, Kimura T, Kondoh E, Naito T, Miyata O. Aerobic Hydroxylation of N-Borylenamine: Triethylborane-Mediated Hydroxyalkylation of α,β-Unsaturated Oxime Ether. Org Lett 2009; 11:4632-5. [DOI: 10.1021/ol901912j] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan, and School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan
| | - Hideto Miyabe
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan, and School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan
| | - Takahiro Kimura
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan, and School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan
| | - Eiko Kondoh
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan, and School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan
| | - Takeaki Naito
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan, and School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan, and School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan
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27
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Rahaman H, Ueda M, Miyata O, Naito T. Two Novel Domino Reactions Triggered by Thiyl-Radical Addition to Vinylcyclopropyl Oxime Ether. Org Lett 2009; 11:2651-4. [DOI: 10.1021/ol900604a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Habibur Rahaman
- Kobe Pharmaceutical University, 4-19-1, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Masafumi Ueda
- Kobe Pharmaceutical University, 4-19-1, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Okiko Miyata
- Kobe Pharmaceutical University, 4-19-1, Motoyamakita, Higashinada, Kobe 658-8558, Japan
| | - Takeaki Naito
- Kobe Pharmaceutical University, 4-19-1, Motoyamakita, Higashinada, Kobe 658-8558, Japan
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Abstract
All in one pot! Radical, radical-ionic, and radical-organometallic MCR are highly convergent processes, representing a useful pathway to molecular and structural diversity (see scheme). This concept article highlights recent developments in the field and shows the potential of the strategy for the economical elaboration of various kinds of organic substrates.Progress in multicomponent reactions (MCRs) based on ionic and organometallic processes has recently allowed the synthesis, with high efficiency, of large collections of drug-like molecules. In contrast, MCRs based on cascade radical reactions appear to have attracted, so far, much less interest. This concept article highlights the latest progress in the field and underlines the potential of such an approach. The collected examples demonstrate that radical and radical-ionic MCRs are highly convergent processes leading to useful structural diversity.
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Affiliation(s)
- Edouard Godineau
- University Bordeaux-1, Institut des Sciences Moléculaires, ISM-UMR 5255, 351, cours de la libération 33405 Talence Cedex, France
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29
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Zhou W, Zhang L, Jiao N. The tandem reaction combining radical and ionic processes: an efficient approach to substituted 3,4-dihydroquinolin-2-ones. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.01.027] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Friestad GK, Banerjee K. Synthesis of γ-Amino Esters via Mn-Mediated Radical Addition to Chiral γ-Hydrazonoesters. Org Lett 2009; 11:1095-8. [DOI: 10.1021/ol802932v] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Koushik Banerjee
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
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31
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Friestad GK, Wu Y. Intermolecular Nonreductive Alkylation of Enamides via Radical−Polar Crossover. Org Lett 2009; 11:819-22. [DOI: 10.1021/ol8028077] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Yaoping Wu
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
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32
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Godineau E, Schenk K, Landais Y. Synthesis of fused piperidinones through a radical-ionic cascade. J Org Chem 2008; 73:6983-93. [PMID: 18729322 DOI: 10.1021/jo801308j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Azabicyclo[4.3.0]nonanes were assembled, from chiral allylsilanes possessing an oxime moiety, using a stereocontrolled formal [2 + 2 + 2] radical-ionic process. The cascade involves the addition of an alpha-iodoester to the less substituted end of the enoxime which is then followed by a 5-exo-trig cyclization onto the aldoxime function, producing an alkoxyaminyl radical species which finally lactamizes to afford the titled piperidinone. High levels of stereoinduction were observed, demonstrating the ability of a silicon group located at the allylic position to efficiently control the stereochemistry of the two newly created stereogenic centers. When the radical cascade was extended to ketoximes, the resulting sterically hindered alkoxyaminyl radical did not react further with the initiator Et3B to produce the expected nucleophilic amidoborane complex. In sharp contrast, this long-lived radical recombined with the initial alpha-stabilized ester radical to produce a cyclopentane incorporating two ester fragments.
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Affiliation(s)
- Edouard Godineau
- University Bordeaux 1, Institut des Sciences Moléculaires, UMR-CNRS 5255, 351, Cours de la Libération, F-33405 Talence Cedex, France
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33
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Yamada KI, Umeki H, Maekawa M, Yamamoto Y, Akindele T, Nakano M, Tomioka K. Conjugate addition reaction of THF-2-yl radical with α,β-unsaturated N-tosyl imines using a dimethylzinc–air initiator. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.05.069] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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34
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Ueda M, Miyabe H, Shimizu H, Sugino H, Miyata O, Naito T. Regioselective Hydroxysulfenylation of α,β-Unsaturated Imines: Enhanced Stability of an Intermediate Radical. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801041] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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35
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Ueda M, Miyabe H, Shimizu H, Sugino H, Miyata O, Naito T. Regioselective Hydroxysulfenylation of α,β-Unsaturated Imines: Enhanced Stability of an Intermediate Radical. Angew Chem Int Ed Engl 2008; 47:5600-4. [DOI: 10.1002/anie.200801041] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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36
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Friestad GK, Ji A. Mn-Mediated Coupling of Alkyl Iodides and Ketimines: A Radical Addition Route to α,α-Disubstituted α-Aminoesters. Org Lett 2008; 10:2311-3. [DOI: 10.1021/ol800733b] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - An Ji
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242
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37
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Miyata O, Takahashi S, Tamura A, Ueda M, Naito T. Novel synthesis of substituted pyrrolidines and piperidines via radical addition–ionic cyclization reaction of oxime ethers. Tetrahedron 2008. [DOI: 10.1016/j.tet.2007.11.081] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Naito T. Development of New Synthetic Reactions for Nitrogen-Containing Compounds and Their Application. Chem Pharm Bull (Tokyo) 2008; 56:1367-83. [DOI: 10.1248/cpb.56.1367] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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39
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Pérez-Luna A, Botuha C, Ferreira F, Chemla F. Carbometalation of unactivated alkenes by zinc enolate derivatives. NEW J CHEM 2008. [DOI: 10.1039/b716292h] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Godineau E, Landais Y. Multicomponent Radical Processes: Synthesis of Substituted Piperidinones. J Am Chem Soc 2007; 129:12662-3. [PMID: 17902677 DOI: 10.1021/ja075755l] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Edouard Godineau
- Université Bordeaux-1, Institut des Sciences Moléculaires, UMR-CNRS-5255, 351, Cours de la Libération, 33405, Talence, France
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41
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Korapala CS, Qin J, Friestad GK. Quinine Synthesis Studies: A Radical−Ionic Annulation via Mn-Mediated Addition to Chiral N-Acylhydrazones. Org Lett 2007; 9:4243-6. [PMID: 17850094 DOI: 10.1021/ol7017938] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A radical-ionic annulation approach to functionalized perhydroisoquinolines involving Mn-mediated coupling of alkyl iodides and chiral N-acylhydrazones was achieved using only 1.25 equiv of the alkyl iodide. Application of this reaction to alkene-containing substrates en route to quinine offered modest yields, decreasing on scaleup. Control experiments revealed that the alkene interfered with the coupling reaction. A revised approach involving prior oxidation of the alkene offered 93% yield in the Mn-mediated coupling, with the adduct obtained as a single diastereomer.
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42
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Miyabe H, Takemoto Y. Enantioselective Radical Cyclizations: A New Approach to Stereocontrol of Cascade Reactions. Chemistry 2007; 13:7280-6. [PMID: 17659664 DOI: 10.1002/chem.200700864] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Stereocontrol in a cascade radical addition-cyclization-trapping reaction was achieved by a new approach, which utilizes a hydroxamate ester moiety as a coordinating chiral Lewis acid tether between two radical acceptors. A remarkable feature of this reaction is the construction of three bonds and tertiary and quaternary stereogenic centers through both inter- and intramolecular carbon-carbon bond-forming processes. The chiral Lewis acid mediated reaction of oxime ethers also proceeded smoothly with good enantio- and diastereoselectivities, indicating the usefulness of the cascade approach for the asymmetric synthesis of various gamma-lactams.
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Affiliation(s)
- Hideto Miyabe
- School of Pharmacy, Hyogo University of Health Sciences, Minatojima, Kobe 650-8530, Japan.
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43
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Herrera RP, Monge D, Martín-Zamora E, Fernandez R, Lassaletta JM. Organocatalytic Conjugate Addition of Formaldehyde N,N-Dialkylhydrazones to β,γ-Unsaturated α-Keto Esters. Org Lett 2007; 9:3303-6. [PMID: 17658836 DOI: 10.1021/ol071292c] [Citation(s) in RCA: 99] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
(1S,2R)-1-Aminoindan-2-ol-derived thioureas behave as efficient H-bonding organocatalysts for the nucleophilic conjugate addition of formaldehyde hydrazones to beta,gamma-unsaturated alpha-keto esters as enoate surrogates, affording the corresponding adducts in good yields and enantioselectivities.
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Affiliation(s)
- Raquel P Herrera
- Instituto de Investigaciones Químicas, CSIC-USe, c/ Américo Vespucio 49, Isla de la Cartuja, 41092 Seville, Spain, and Departamento de Química OrgAnica, Facultad de Química, Universidad de Sevilla, Apdo. de Correos No. 553, 41071 Seville, Spain
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44
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Monge D, Martín-Zamora E, Vazquez J, Alcarazo M, Alvarez E, Fernandez R, Lassaletta JM. Enantioselective Conjugate Addition ofN,N-Dialkylhydrazones to α-Hydroxy Enones‡. Org Lett 2007; 9:2867-70. [PMID: 17580886 DOI: 10.1021/ol071055+] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The activation of alpha-hydroxy enones by the Zn(OTf)2/tBuBOX catalyst enables the enantioselective conjugate addition of 1-methyleneaminopyrrolidine as a neutral d1 synthon. Experimental evidence supports a stereochemical model where a triflate ligand controls the geometry of the catalyst-substrate complex by means of a OH-OTf hydrogen bond. The synthesis of beta-cyano acids illustrates the potential of the methodology.
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Affiliation(s)
- David Monge
- Instituto de Investigaciones Químicas CSIC-US, Américo Vespucio 49, E-41092 Seville, Spain
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45
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Toward a rational design of the assembly structure of polymetallic asymmetric catalysts: design, synthesis, and evaluation of new chiral ligands for catalytic asymmetric cyanation reactions. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.02.081] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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46
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Denes F, Cutri S, Perez-Luna A, Chemla F. Radical-polar crossover domino reactions involving organozinc and mixed organocopper/organozinc reagents. Chemistry 2007; 12:6506-13. [PMID: 16789032 DOI: 10.1002/chem.200600334] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A domino process involving Michael addition and carbocyclization has been developed starting from beta-N-allylamino enoates and various organometallic reagents (organozinc halides, diorganozinc reagents, and copper/zinc mixed species). In all cases the mechanism of this domino reaction has been evidenced to involve a radical-polar crossover mechanism.
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Affiliation(s)
- Fabrice Denes
- Université Pierre et Marie Curie - Paris 6, Laboratoire de chimie organique (UMR CNRS 7611), Institut de chimie moléculaire (FR 2769) case 183, 4 place Jussieu, 75252 Paris cedex 05, France
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47
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48
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Ueda M, Ono A, Nakao D, Miyata O, Naito T. First total synthesis of penmacric acid and its stereoisomer. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2006.11.146] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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49
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Godineau E, Schäfer C, Landais Y. A Stereocontrolled Access to Ring-Fused Piperidines through a Formal [2+2+2] Process. Org Lett 2006; 8:4871-4. [PMID: 17020324 DOI: 10.1021/ol061914e] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] A formal [2+2+2] process has been devised that allows the stereocontrolled formation of ring-fused piperidines from allylsilanes possessing an oxime moiety. The cascade involves an intermolecular radical addition of an alpha-iodoacetate onto an allylsilane double bond, which is followed by a 5-exo-trig cyclization onto an oxime and is completed by the formation of the amide bond by nucleophilic attack of the amine onto the ester function.
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Affiliation(s)
- Edouard Godineau
- University Bordeaux-I, Laboratoire de Chimie Organique et Organométallique, 351, Cours de la Libération, 33405 Talence Cedex, France
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50
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Friestad GK, Marié JC, Suh Y, Qin J. Mn-Mediated Coupling of Alkyl Iodides and Chiral N-Acylhydrazones: Optimization, Scope, and Evidence for a Radical Mechanism. J Org Chem 2006; 71:7016-27. [PMID: 16930057 DOI: 10.1021/jo061158q] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Stereoselective radical additions have excellent potential as mild, nonbasic carbon-carbon bond constructions for direct asymmetric amine synthesis. Efficient intermolecular radical addition to C=N bonds with acyclic stereocontrol has previously been limited mainly to secondary and tertiary radicals, a serious limitation from the perspective of synthetic applications. Here, we provide full details of the use of photolysis with manganese carbonyl to mediate stereoselective intermolecular radical addition to N-acylhydrazones. Photolysis (300 nm) of alkyl halides and hydrazones in the presence of Mn2(CO)10 and InCl(3) as a Lewis acid led to reductive radical addition; diastereomer ratios ranged from 93:7 to 98:2 at ca. 35 degrees C. The reaction tolerates additional functionality in either reactant, enabling subsequent transformations as shown in an efficient asymmetric synthesis of coniine. A series of hydrazones bearing different substituents on the oxazolidinone auxiliary were compared; consistently high diastereocontrol revealed that the identity of the substituent had little practical effect on the diastereoselectivity. Further mechanistic control experiments confirmed the intermediacy of radicals and showed that independently prepared alkyl- or acylmanganese pentacarbonyl compounds do not undergo efficient addition to the N-acylhydrazones under thermal or photolytic (300 nm) conditions. These Mn-mediated conditions avoid toxic tin reagents and enable stereoselective intermolecular radical additions to C=N bonds with the broadest range of alkyl halides yet reported, including previously ineffective primary alkyl halides.
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