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Long W, Qiu W, Li C, Song L, Bai G, Zhang G, He H. Direct synthesis of N-sulfenylimines through oxidative coupling of amines with disulfides/thiols over copper based metal–organic frameworks. RSC Adv 2016. [DOI: 10.1039/c6ra01971d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly porous metal–organic framework based on supramolecular building blocks with pcu-topology has been tested for the oxidative coupling of amines and disulfides to afford the N-sulfenylimines directly in good yields.
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Affiliation(s)
- Wei Long
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124
| | - Wenge Qiu
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124
| | - Chuanqiang Li
- Department of Applied Chemistry
- College of Science
- Chongqing Jiaotong University
- Chongqing 400074
- China
| | - Liyun Song
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124
| | - Guangmei Bai
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124
| | - Guizhen Zhang
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124
| | - Hong He
- Beijing Key Laboratory for Green Catalysis and Separation
- Department of Chemistry and Chemical Engineering
- College of Environmental and Energy Engineering
- Beijing University of Technology
- Beijing 100124
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Xiao J, Li Q, Chen T, Han LB. Copper-mediated selective aerobic oxidative C3-cyanation of indoles with DMF. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.09.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Funder ED, Trads JB, Gothelf KV. Oxidative activation of dihydropyridine amides to reactive acyl donors. Org Biomol Chem 2015; 13:185-98. [PMID: 25358438 DOI: 10.1039/c4ob01931h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amides of 1,4-dihydropyridine (DHP) are activated by oxidation for acyl transfer to amines, alcohols and thiols. In the reduced form the DHP amide is stable towards reaction with amines at room temperature. However, upon oxidation with DDQ the acyl donor is activated via a proposed pyridinium intermediate. The activated intermediate reacts with various nucleophiles to give amides, esters, and thio-esters in moderate to high yields.
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Affiliation(s)
- Erik Daa Funder
- Danish National Research Foundation, Center for DNA Nanotechnology, Department of Chemistry and iNANO, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark.
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McGarry KA, Duenas AA, Clark TB. Selective Formation of ortho-Aminobenzylamines by the Copper-Catalyzed Amination of Benzylamine Boronate Esters. J Org Chem 2015; 80:7193-204. [PMID: 26067569 DOI: 10.1021/acs.joc.5b01074] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The copper-catalyzed coupling between benzylamino boronate esters and aryl amines has been investigated. Formation of ortho-aminobenzylamines was achieved under oxidative conditions in the presence of copper(II) acetate. The major side product of the transformation is the homocoupling of the aryl boronate ester. The formation of the desired diamines was found to be improved in the absence of base, increasing selectivity over the homocoupled product. Both electron-donating and electron-withdrawing substituents are tolerated on both the boronate ester substrate and the aniline coupling partner under the reaction conditions. The presence of the adjacent benzylamine moiety appears to enhance the reactivity of the boronate ester and influence the resulting product distribution, likely by affecting the competing rates of transmetalation in the catalytic cycles.
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Allen SE, Walvoord RR, Padilla-Salinas R, Kozlowski MC. Aerobic copper-catalyzed organic reactions. Chem Rev 2013; 113:6234-458. [PMID: 23786461 PMCID: PMC3818381 DOI: 10.1021/cr300527g] [Citation(s) in RCA: 1227] [Impact Index Per Article: 111.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Scott E. Allen
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Ryan R. Walvoord
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Rosaura Padilla-Salinas
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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Xiao T, Xiong S, Xie Y, Dong X, Zhou L. Copper-catalyzed synthesis of benzazoles via aerobic oxidative condensation of o-amino/mercaptan/hydroxyanilines with benzylamines. RSC Adv 2013. [DOI: 10.1039/c3ra42175a] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
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Patil RD, Adimurthy S. Copper-Catalyzed Aerobic Oxidation of Amines to Imines under Neat Conditions with Low Catalyst Loading. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100100] [Citation(s) in RCA: 195] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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8
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Zamudio-Medina A, García-González MC, Padilla J, González-Zamora E. Synthesis of a tetracyclic lactam system of Nuevamine by four-component reaction and free radical cyclization. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.07.047] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Sletten EM, Liotta LJ. A Flexible Stereospecific Synthesis of Polyhydroxylated Pyrrolizidines from Commercially Available Pyranosides. J Org Chem 2006; 71:1335-43. [PMID: 16468780 DOI: 10.1021/jo051792o] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Nitrogen-containing sugar analogues, known as azasugars or iminosugars, such as polyhydroxylated piperdines, pyrrolidines, pyrrolizidines, and indolizidines, have the potential to become important therapeutic agents due to their ability to inhibit glycosidases. Synthetic pathways that are able to systematically produce a variety of these azasugars are eagerly sought after, since even minute structural or stereochemical changes often significantly alter the degree of inhibition. The synthesis of tetrahydroxylated pyrrolizidines 40 and 41 starting from methyl alpha-d-glucopyranoside is described and will be used as a template to develop syntheses of all the stereoisomers of polyhydroxylated pyrrolizidine 9 as well as other analogous bicyclic polyhydroxylated iminosugars. The key steps in this synthesis involve a one-pot conversion of a halopyranoside to a divinylamine by employing a simultaneous Zn reduction and reductive amination of the resulting aldehyde. After protection of the amine, a ring-closing metathesis results in a multifunctional eight-membered ring that then undergoes an internal S(N)2 cyclization to form an alkene-containing pyrrolizidine 33. Dihydroxylation of the alkene followed by hydrogenolysis of the benzyl protecting groups results in tetrahydroxylated pyrrolizidines 40 and 41.
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Affiliation(s)
- Ellen M Sletten
- Department of Chemistry, Stonehill College, 320 Washington Street, Easton, Massachusetts 02357, USA
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Maeda Y, Nishimura T, Uemura S. Copper-Catalyzed Oxidation of Amines with Molecular Oxygen. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2003. [DOI: 10.1246/bcsj.76.2399] [Citation(s) in RCA: 112] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Uma MV, Sudha R, Balaram P. Spermidine as a potential biosynthetic precursor to the 1,5-diazabicyclo[4:3:o]nonene residue in the efrapeptins. THE JOURNAL OF PEPTIDE RESEARCH : OFFICIAL JOURNAL OF THE AMERICAN PEPTIDE SOCIETY 2001; 58:375-9. [PMID: 11892846 DOI: 10.1034/j.1399-3011.2001.00915.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Efrapeptins are a group of microheterogeneous polypeptide antibiotics produced by the fungus Tolypocladium niveum, which are potent inhibitors of mitochondrial F1-ATPase. Efrapeptins contain an unusual 1,5-diazabicyclo[4:3:0]nonene (DBN) residue at the C-terminus. This study is driven by the hypothesis that the DBN residue could, in principle, arise by oxidative cyclization of a spermidine moiety. Electrospray ionization mass spectrometry of the peptide antibiotics 'elvapeptins' from T niveum establishes the presence of a C-terminal spermidine residue. Conversion of elvapeptins to efrapeptins by CuCl/pyridine demonstrates the transformation of the spermidine residue to the 1,5-diazabicyclo[4:3:0]nonene system by oxidative cyclization.
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Affiliation(s)
- M V Uma
- Molecular Biophysics Unit, Indian Institute of Science, Bangalore
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13
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The chemistry of side reactions and byproduct formation in the system NMMO/cellulose (Lyocell process). Prog Polym Sci 2001. [DOI: 10.1016/s0079-6700(01)00023-5] [Citation(s) in RCA: 369] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Abstract
The catalytic reaction of cis-bisglycinato copper(II) monohydrate in the presence of hydrogen peroxide leads to hydroxylation of phenol to give catechol and hydroquinone (1:1.2 ratio) in good yield. 2,6-Dimethylphenol can be hydroxylated by hydrogen peroxide and a catalytic amount of cis-bisglycinato copper(II) monohydrate to give an aggregate of 1,4-dihydroxy-2,6-dimethylbenzene and 2,6-dimethylphenol. A similar reaction of o-cresol gives 2,5-dihydroxytoluene. The reactivity of cis-bisglycinato copper(II) monohydrate in hydrogen peroxide with o-cresol is 4.5 times faster than that of a similar reaction by trans-bisglycinato copper(II) monohydrate. A catalytic reaction of cis-bisglycinato copper(II) monohydrate with aniline in aqueous hydrogen peroxide gives polyanilines in the form of pernigraniline with different amounts of Cu(OH)2 attached to them. The two major components of polyanilines obtained have Mn values of 1040 and 1500, respectively. Resistance of films of these polyanilines increases with temperatures from 40 degrees C to a maximum value at 103 degrees C and then decreases in the region of 103-150 degrees C, showing the property of a thermolectric switch. The aggregate prepared from hydroxylation of 2,6-dimethylphenol shows a similar property in the region of 30-180 degrees C.
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Affiliation(s)
- A Puzari
- Department of Chemistry, Indian Institute of Technology, Guwahati, India
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Minakata S, Ohshima Y, Takemiya A, Ryu I, Komatsu M, Ohshiro Y. Catalytic Oxidation of Amines Utilizing Binuclear Copper(II) Complex of 7-Azaindole. CHEM LETT 1997. [DOI: 10.1246/cl.1997.311] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Gunnoe TB, White PS, Templeton JL. Stepwise Oxidation of Benzylamine Coordinated to the [Tp‘W(CO)(PhC2Me)]+ Moiety. J Am Chem Soc 1996. [DOI: 10.1021/ja953944a] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T. Brent Gunnoe
- Contribution from the Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290
| | - P. S. White
- Contribution from the Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290
| | - J. L. Templeton
- Contribution from the Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290
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Maumy M, Capdevielle P. Oxo Transfer from Amines N-Oxides to Copper Salts: Resulting Copper(III) Mediated Oxidation of Organic Ligands. DIOXYGEN ACTIVATION AND HOMOGENEOUS CATALYTIC OXIDATION, PROCEEDINGS OF THE FOURTH INTERNATIONAL SYMPOSIUM ON DIOXYGEN ACTIVATION AND HOMOGENEOUS CATALYTIC OXIDATION 1991. [DOI: 10.1016/s0167-2991(08)62887-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Capdevielle P, Maumy M. A new oxidizing copper reagent : Cuα2H preparation and preliminary study of reactivity. Tetrahedron Lett 1990. [DOI: 10.1016/s0040-4039(00)97497-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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