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Ando K, Takaba C, Kodama M. One-Pot O 2-Oxidation and the Horner-Wadsworth-Emmons Reaction of Primary Alcohols for the Synthesis of ( Z)-α,β-Unsaturated Esters. J Org Chem 2022; 87:9723-9728. [PMID: 35822779 DOI: 10.1021/acs.joc.2c00763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We developed one-pot oxidation/olefination procedures of primary alcohols giving Z-α,β-unsaturated esters 3. TEMPO-(CuCl or CuBr2)-(2,2'-bipyridine) (1:1:1) catalyzed O2 oxidation of primary alcohols in the presence of Z-selective Horner-Wadsworth-Emmons reagent 1b and K3PO4 or NaH gave 3 with Z/E = 84:16 to 96:4 in high yields. A stepwise reaction was also developed. After TEMPO-CuBr2-(2,2'-bipyridine)-K3PO4 (1:1:1:1) catalyzed O2 oxidation of alcohols in MeCN, the resulting mixture was treated with a THF solution of 1b and t-BuOK at -78 °C to 0 °C, giving 3 with higher selectivity (Z/E = 91:9 to 99:1).
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Affiliation(s)
- Kaori Ando
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Chika Takaba
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
| | - Masahiro Kodama
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan
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2
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Ando K, Isomura W, Uchida N, Mori K. Highly E-Selective Solvent-free Horner-Wadsworth-Emmons Reaction for the Synthesis of α-Methyl-α,β-unsaturated Esters Using Either LiOH·H 2O or Ba(OH) 2·8H 2O. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kaori Ando
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu-City, Gifu 501-1193
| | - Wakana Isomura
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu-City, Gifu 501-1193
| | - Nariaki Uchida
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu-City, Gifu 501-1193
| | - Kanae Mori
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu-City, Gifu 501-1193
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3
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Ando K, Takao M, Oyama I, Furuta K. One-Pot Preparation of Ethyl 2(Z)-4-(Anilinoxy)pentenoate by α-Aminoxylation of Propanal Followed by Z-Selective HWE Reaction and the Study on Its Cyclization Reaction. HETEROCYCLES 2018. [DOI: 10.3987/com-18-13932] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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4
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Chenniappan VK, Rahaim RJ. Titanium-Promoted Cross-Coupling for the Selective Synthesis of Polysubstituted, Conjugated Amides. Org Lett 2016; 18:5090-5093. [PMID: 27678270 DOI: 10.1021/acs.orglett.6b02537] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
α,β-Unsaturated amides are important building blocks and are key structural elements in a number of biologically active natural products. Despite their importance and prevalence, few methods exist to prepare conjugated amides directly and modularly. To address this gap, a titanium-promoted coupling of alkynes and isocyanates has been developed. The method is highly stereoselective, producing only the E isomer with good chemoselectivity and regioselectivity (>95/5), for unsymmetrical internal alkynes that contain a steric bias. The reactive titanacyclopentene intermediate formed from the coupling of the alkyne and isocyanate was additionally reacted with various electrophiles to access tetrasubstituted enamides.
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Affiliation(s)
- Vinoth Kumar Chenniappan
- Department of Chemistry, Oklahoma State University , 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
| | - Ronald J Rahaim
- Department of Chemistry, Oklahoma State University , 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
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5
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Gutekunst WR, Baran PS. Applications of C-H functionalization logic to cyclobutane synthesis. J Org Chem 2014; 79:2430-52. [PMID: 24548142 PMCID: PMC3985916 DOI: 10.1021/jo4027148] [Citation(s) in RCA: 150] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Indexed: 02/08/2023]
Abstract
The application of C-H functionalization logic to target-oriented synthesis provides an exciting new venue for the development of new and useful strategies in organic chemistry. In this article, C-H functionalization reactions are explored as an alternative approach to access pseudodimeric cyclobutane natural products, such as the dictazole and the piperarborenine families. The use of these strategies in a variety of complex settings highlights the subtle geometric, steric, and electronic effects at play in the auxiliary guided C-H functionalization of cyclobutanes.
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Affiliation(s)
- Will R. Gutekunst
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Phil S. Baran
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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6
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Ando K. Utilization of ab initio and DFT Calculations for the Development of Organic Synthesis. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.890] [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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Mola L, Font J, Bosch L, Caner J, Costa AM, Etxebarría-Jardí G, Pineda O, de Vicente D, Vilarrasa J. Nucleophile-catalyzed additions to activated triple bonds. Protection of lactams, imides, and nucleosides with MocVinyl and related groups. J Org Chem 2013; 78:5832-42. [PMID: 23713491 DOI: 10.1021/jo4006409] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Additions of lactams, imides, (S)-4-benzyl-1,3-oxazolidin-2-one, 2-pyridone, pyrimidine-2,4-diones (AZT derivatives), or inosines to the electron-deficient triple bonds of methyl propynoate, tert-butyl propynoate, 3-butyn-2-one, N-propynoylmorpholine, or N-methoxy-N-methylpropynamide in the presence of many potential catalysts were examined. DABCO and, second, DMAP appeared to be the best (highest reaction rates and E/Z ratios), while RuCl3, RuClCp*(PPh3)2, AuCl, AuCl(PPh3), CuI, and Cu2(OTf)2 were incapable of catalyzing such additions. The groups incorporated (for example, the 2-(methoxycarbonyl)ethenyl group that we name MocVinyl) serve as protecting groups for the above-mentioned heterocyclic CONH or CONHCO moieties. Deprotections were accomplished via exchange with good nucleophiles: the 1-dodecanethiolate anion turned out to be the most general and efficient reagent, but in some particular cases other nucleophiles also worked (e.g., MocVinyl-inosines can be cleaved with succinimide anion). Some structural and mechanistic details have been accounted for with the help of DFT and MP2 calculations.
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Affiliation(s)
- Laura Mola
- Departament de Química Orgànica, Facultat de Química, Universitat de Barcelona, Diagonal 645, 08028 Barcelona, Catalonia, Spain
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8
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Highly Z-selective synthesis of α,β-unsaturated nitriles using the Horner–Wadsworth–Emmons reaction. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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10
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Liu R, Zhang M, Wyche TP, Winston-McPherson GN, Bugni TS, Tang W. Stereoselective preparation of cyclobutanes with four different substituents: total synthesis and structural revision of pipercyclobutanamide A and piperchabamide G. Angew Chem Int Ed Engl 2012; 51:7503-6. [PMID: 22715150 PMCID: PMC3444511 DOI: 10.1002/anie.201203379] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Indexed: 11/11/2022]
Abstract
A general strategy was developed for the diastereo- and enantioselective synthesis of cyclobutanes with four different substituents. It consists of three transition metal-catalyzed reactions — a RhII-catalyzed cyclopropanation, a AgI-catalyzed regioselective and stereospecific ring expansion, and a RhI-catalyzed addition reaction. Structures of pipercyclobutanamide A and piperchabamide G were synthesized and revised.
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Affiliation(s)
- Renhe Liu
- The School of Pharmacy, University of Wisconsin Madison, WI 53705-2222 (USA)
| | - Min Zhang
- The School of Pharmacy, University of Wisconsin Madison, WI 53705-2222 (USA)
| | - Thomas P. Wyche
- The School of Pharmacy, University of Wisconsin Madison, WI 53705-2222 (USA)
| | | | - Tim S. Bugni
- The School of Pharmacy, University of Wisconsin Madison, WI 53705-2222 (USA)
| | - Weiping Tang
- The School of Pharmacy, University of Wisconsin Madison, WI 53705-2222 (USA)
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11
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Gutekunst WR, Gianatassio R, Baran PS. Sequential C sp 3H Arylation and Olefination: Total Synthesis of the Proposed Structure of Pipercyclobutanamide A. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203897] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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Stereoselective Preparation of Cyclobutanes with Four Different Substituents: Total Synthesis and Structural Revision of Pipercyclobutanamide A and Piperchabamide G. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201203379] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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13
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Gutekunst WR, Gianatassio R, Baran PS. Sequential C(sp3)-H arylation and olefination: total synthesis of the proposed structure of pipercyclobutanamide A. Angew Chem Int Ed Engl 2012; 51:7507-10. [PMID: 22715157 DOI: 10.1002/anie.201203897] [Citation(s) in RCA: 201] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Indexed: 11/05/2022]
Affiliation(s)
- Will R Gutekunst
- Department of Chemistry, The Scripps Research Institute, 10650 North Torrey Pines Road, La Jolla, CA 92037, USA
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Gu Y, Tian SK. Olefination Reactions of Phosphorus-Stabilized Carbon Nucleophiles. Top Curr Chem (Cham) 2012; 327:197-238. [DOI: 10.1007/128_2012_314] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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16
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Z-Selective intramolecular Horner–Wadsworth–Emmons reaction for the synthesis of macrocyclic alkenes. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.01.043] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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17
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Fang F, Li Y, Tian SK. Stereoselective Olefination of N-Sulfonyl Imines with Stabilized Phosphonium Ylides for the Synthesis of Electron-Deficient Alkenes. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001379] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ando K, Narumiya K, Takada H, Teruya T. Z-Selective Intramolecular Horner−Wadsworth−Emmons Reaction for the Synthesis of Macrocyclic Lactones. Org Lett 2010; 12:1460-3. [DOI: 10.1021/ol100071d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kaori Ando
- Department of Chemistry, Fuculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan, and College of Education, University of the Ryukyus, Nishihara-cho, Okinawa 903-0213, Japan
| | - Kenji Narumiya
- Department of Chemistry, Fuculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan, and College of Education, University of the Ryukyus, Nishihara-cho, Okinawa 903-0213, Japan
| | - Hirokazu Takada
- Department of Chemistry, Fuculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan, and College of Education, University of the Ryukyus, Nishihara-cho, Okinawa 903-0213, Japan
| | - Taiji Teruya
- Department of Chemistry, Fuculty of Engineering, Gifu University, Yanagido 1-1, Gifu 501-1193, Japan, and College of Education, University of the Ryukyus, Nishihara-cho, Okinawa 903-0213, Japan
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