51
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Drescher S, Becker S, Dobner B, Blume A. Bis-Sonogashira cross-coupling: an expeditious approach towards long-chain, phenylene-modified 1,ω-diols. RSC Adv 2012. [DOI: 10.1039/c2ra20411h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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52
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Cannon KA, Geuther ME, Kelly CK, Lin S, MacArthur AHR. Hydrodehalogenation of Aryl Chlorides and Aryl Bromides Using a Microwave-Assisted, Copper-Catalyzed Concurrent Tandem Catalysis Methodology. Organometallics 2011. [DOI: 10.1021/om2003706] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kathleen A. Cannon
- Department of Chemistry, United States Naval Academy, 572 Holloway Road, Annapolis, Maryland 21042, United States
| | - Meagan E. Geuther
- Department of Chemistry, United States Naval Academy, 572 Holloway Road, Annapolis, Maryland 21042, United States
| | - Colin K. Kelly
- Department of Chemistry, United States Naval Academy, 572 Holloway Road, Annapolis, Maryland 21042, United States
| | - Shirley Lin
- Department of Chemistry, United States Naval Academy, 572 Holloway Road, Annapolis, Maryland 21042, United States
| | - Amy H. Roy MacArthur
- Department of Chemistry, United States Naval Academy, 572 Holloway Road, Annapolis, Maryland 21042, United States
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53
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Manca P, Pilo MI, Casu G, Gladiali S, Sanna G, Scanu R, Spano N, Zucca A, Zanardi C, Bagnis D, Valentini L. A new terpyridine tethered polythiophene: Electrosynthesis and characterization. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pola.24786] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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54
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Hajipour AR, Rafiee F. Accelerated Heck reaction using ortho-palladated complex in a nonaqueous ionic liquid with controlled microwave heating. Appl Organomet Chem 2011. [DOI: 10.1002/aoc.1800] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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55
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Dell’Acqua M, Facoetti D, Abbiati G, Rossi E. From domino to multicomponent: synthesis of dihydroisobenzofurans. Tetrahedron 2011. [DOI: 10.1016/j.tet.2010.12.056] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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56
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Öhrngren P, Wu X, Persson M, Ekegren JK, Wallberg H, Vrang L, Rosenquist Å, Samuelsson B, Unge T, Larhed M. HIV-1 protease inhibitors with a tertiary alcohol containing transition-state mimic and various P2 and P1′ substituents. MEDCHEMCOMM 2011. [DOI: 10.1039/c1md00077b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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57
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3-(Pyridin-2-yl-ethynyl)benzamide metabotropic glutamate receptor 5 negative allosteric modulators: hit to lead studies. Bioorg Med Chem Lett 2010; 21:195-9. [PMID: 21126874 DOI: 10.1016/j.bmcl.2010.11.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 11/03/2010] [Accepted: 11/04/2010] [Indexed: 11/22/2022]
Abstract
A series of 3-(pyridin-2-yl-ethynyl)benzamide negative allosteric modulators of the metabotropic glutamate receptor 5 (mGluR5 NAMs) have been prepared. Starting from HTS hit 1 (IC(50): 926 nM), potent mGluR5 NAMs showing excellent potencies (IC(50)s<50 nM) and good physicochemical profiles were prepared by monitoring LipE values. One compound 26 showed excellent mGluR5 binding (K(i): 21 nM) and antagonism (IC(50): 8 nM), an excellent rat PK profile (CL: 12 mL/min/kg, %F: 85) and showed oral activity in a mouse 4-Plate Behavioral model of anxiety (MED: 30 mpk) and a mouse Stress Induced Hyperthermia model of anxiety (MED 17.8 mpk).
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58
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Enders C, Tanner S, Binder WH. End-Group Telechelic Oligo- and Polythiophenes by “Click” Reactions: Synthesis and Analysis via LC-ESI-TOF MS. Macromolecules 2010. [DOI: 10.1021/ma1016727] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Claudia Enders
- Chair of Macromolecular Chemistry, Institute of Chemistry, Division of Technical and Macromolecular Chemistry, Faculty of Natural Sciences II (Chemistry and Physics), Martin-Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, D-06120 Halle, Germany
| | - Susanne Tanner
- Chair of Macromolecular Chemistry, Institute of Chemistry, Division of Technical and Macromolecular Chemistry, Faculty of Natural Sciences II (Chemistry and Physics), Martin-Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, D-06120 Halle, Germany
| | - Wolfgang H. Binder
- Chair of Macromolecular Chemistry, Institute of Chemistry, Division of Technical and Macromolecular Chemistry, Faculty of Natural Sciences II (Chemistry and Physics), Martin-Luther University Halle-Wittenberg, Von-Danckelmann-Platz 4, D-06120 Halle, Germany
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59
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A new, efficient, and inexpensive copper(II)/salicylic acid complex catalyzed Sonogashira-type cross-coupling of haloarenes and iodoheteroarenes with terminal alkynes. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.07.072] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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60
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Synthesis and characterization of a polymer-anchored palladium(II) Schiff base complex and its catalytic efficiency in phosphine-free Sonogashira coupling reactions. TRANSIT METAL CHEM 2010. [DOI: 10.1007/s11243-010-9328-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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61
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Synthesis and antibacterial activity of aminosugar-functionalized intercalating agents. Carbohydr Res 2010; 345:10-22. [DOI: 10.1016/j.carres.2009.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2009] [Revised: 10/10/2009] [Accepted: 10/13/2009] [Indexed: 11/22/2022]
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62
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Hajipour AR, Karami K, Pirisedigh A. Palladium-catalyzed cyanation reaction of aryl halides using K4[Fe(CN)6] as non-toxic source of cyanide under microwave irradiation. Appl Organomet Chem 2010. [DOI: 10.1002/aoc.1639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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63
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Bakherad M, Keivanloo A, Bahramian B, Mihanparast S. A diphenylphosphinoethane-functionalized polystyrene resin-supported Pd(0) complex as an effective catalyst for copper-free Sonogashira coupling reactions under aerobic conditions. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.05.118] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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64
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Santín E, Khanwalkar H, Voegel J, Collette P, Mauvais P, Gronemeyer H, de Lera Á. Highly Potent Naphthofuran-Based Retinoic Acid Receptor Agonists. ChemMedChem 2009; 4:780-91. [DOI: 10.1002/cmdc.200900015] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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65
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Kuang YY, Chen FE. Copper- and Phosphine-FreeSonogashiraCoupling Reaction Catalyzed by Polyurea-Encapsulated Palladium(II). Helv Chim Acta 2009. [DOI: 10.1002/hlca.200800385] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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66
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67
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68
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Torborg C, Huang J, Schulz T, Schäffner B, Zapf A, Spannenberg A, Börner A, Beller M. Improved Palladium-Catalyzed Sonogashira Coupling Reactions of Aryl Chlorides. Chemistry 2009; 15:1329-36. [DOI: 10.1002/chem.200802444] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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69
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70
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Bakherad M, Bahramian B, Nasr-Isfahani H, Keivanloo A, Doostmohammadi N. Polystyrene-supported palladium(II) ethylenediamine complex: A highly active and recyclable catalyst for the synthesis of 2-benzylimidazo[2,1-b]pyridines through heteroannulation of acetylenic compounds. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.16] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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71
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72
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Bromfield KM, Gradén H, Ljungdahl N, Kann N. Synthetic applications of cationic iron and cobalt carbonyl complexes. Dalton Trans 2009:5051-61. [DOI: 10.1039/b900434n] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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73
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Waldo JP, Zhang X, Shi F, Larock RC. Efficient synthesis of fluoren-9-ones by the palladium-catalyzed annulation of arynes by 2-haloarenecarboxaldehydes. J Org Chem 2008; 73:6679-85. [PMID: 18683978 DOI: 10.1021/jo8009215] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fluoren-9-ones and derivatives are readily prepared in good yields by the annulation of in situ generated arynes by 2-haloarenecarboxaldehydes in the presence of a palladium catalyst.
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Affiliation(s)
- Jesse P Waldo
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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74
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Sotiriou-Leventis C, Wang X, Mulik S, Thangavel A, Leventis N. Immobilization of Pd Catalysts on Mesoporous Silica for Amine- and Copper-Free Sonogashira Coupling Reactions. SYNTHETIC COMMUN 2008. [DOI: 10.1080/00397910802138546] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | - Xiaojiang Wang
- a Department of Chemistry , Missouri University of Science and Technology , Rolla, Missouri, USA
| | - Sudhir Mulik
- a Department of Chemistry , Missouri University of Science and Technology , Rolla, Missouri, USA
| | - Arumugam Thangavel
- a Department of Chemistry , Missouri University of Science and Technology , Rolla, Missouri, USA
| | - Nicholas Leventis
- a Department of Chemistry , Missouri University of Science and Technology , Rolla, Missouri, USA
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75
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Mehta VP, Sharma A, Van Hecke K, Van Meervelt L, Van der Eycken E. A Novel and Versatile Entry to Asymmetrically Substituted Pyrazines. J Org Chem 2008; 73:2382-8. [DOI: 10.1021/jo702656v] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vaibhav Pravinchandra Mehta
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC), Biomolecular Architecture, Department of Chemistry, University of Leuven (K. U. Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Anuj Sharma
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC), Biomolecular Architecture, Department of Chemistry, University of Leuven (K. U. Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Kristof Van Hecke
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC), Biomolecular Architecture, Department of Chemistry, University of Leuven (K. U. Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Luc Van Meervelt
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC), Biomolecular Architecture, Department of Chemistry, University of Leuven (K. U. Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
| | - Erik Van der Eycken
- Laboratory for Organic and Microwave-Assisted Chemistry (LOMAC), Biomolecular Architecture, Department of Chemistry, University of Leuven (K. U. Leuven), Celestijnenlaan 200F, B-3001, Leuven, Belgium
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76
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77
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Erdélyi M, Varedian M, Sköld C, Niklasson IB, Nurbo J, Persson Å, Bergquist J, Gogoll A. Chemistry and folding of photomodulable peptides – stilbene and thioaurone-type candidates for conformational switches. Org Biomol Chem 2008; 6:4356-73. [DOI: 10.1039/b812001c] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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78
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Torborg C, Zapf A, Beller M. Palladium catalysts for highly selective Sonogashira reactions of aryl and heteroaryl bromides. CHEMSUSCHEM 2008; 1:91-96. [PMID: 18605670 DOI: 10.1002/cssc.200700004] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Palladium catalysts have been studied for the Sonogashira-Hagihara coupling of aryl and heteroaryl bromides with terminal alkynes. Among the different biarylphosphines tested, 2-(di-tert-butylphosphino)-N-phenylindole (cataCXium Plntb) allows the efficient coupling of both activated and deactivated (hetero)aryl bromides in the presence of sodium tetrachloropalladate in tetramethylethylenediamine (TMEDA) at 80 degrees C. The catalyst system gives high turnover numbers (up to 14 100) and shows a broad tolerance towards functional groups such as OH and NH2, as well as heterocycles.
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Affiliation(s)
- Christian Torborg
- Leibniz-Institut für Katalyse an der Universität Rostock e.V, Albert-Einstein-Strasse 29A, 18059 Rostock, Germany
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79
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Pd/Cu catalyzed homo-coupling reactions of 2-iodo-3-iodomethyl-1,4-diarylnaphthalene in the presence of arylacetylene. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.10.112] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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80
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81
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Copper-free Sonogashira coupling reaction catalyzed by MCM-41-supported thioether palladium(0) complex in water under aerobic conditions. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.molcata.2007.03.055] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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82
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Stocking EM, Miller JM, Barbier AJ, Wilson SJ, Boggs JD, McAllister HM, Wu J, Lovenberg TW, Carruthers NI, Wolin RL. Synthesis and biological evaluation of diamine-based histamine H3 antagonists with serotonin reuptake inhibitor activity. Bioorg Med Chem Lett 2007; 17:3130-5. [PMID: 17412583 DOI: 10.1016/j.bmcl.2007.03.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2007] [Accepted: 03/12/2007] [Indexed: 11/15/2022]
Abstract
The synthesis and structure-activity relationships of a series of novel phenoxyphenyl diamine derivatives with affinity for both the histamine H(3) receptor and the serotonin transporter is described.
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Affiliation(s)
- Emily M Stocking
- Johnson & Johnson Pharmaceutical Research & Development, L.L.C., 3210 Merryfield Row, San Diego, CA 92121, USA.
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83
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Zheng SL, Lin N, Reid S, Wang B. Effect of extended conjugation with a phenylethynyl group on the fluorescent properties of water-soluble arylboronic acids. Tetrahedron 2007; 63:5427-5436. [PMID: 19568321 DOI: 10.1016/j.tet.2007.04.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Boronic acids that change fluorescent properties upon sugar binding are very important reporter units for the development of small molecule lectin mimics (boronolectins). Aimed at developing long wavelength fluorescent boronic acid reporter compounds, we have designed and synthesized a series of boronic acid analogs 2a-d with an extended π conjugation. Such designs are based on earlier fluorescent boronic acids that change fluorescent properties upon sugar binding. Compared with the corresponding parent chromophores, these new compounds with extended conjugations show longer excitation and emission wavelengths as designed. The patterns of fluorescent changes for the new compounds are also different from that of the corresponding parent compounds.
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Affiliation(s)
- Shi-Long Zheng
- Department of Chemistry and Center for Biotechnology and Drug Design, Georgia State University, Atlanta, GA 30302-4098, USA
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84
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Cai M, Sha J, Xu Q. MCM-41-supported bidentate phosphine palladium(0) complex: a highly active and recyclable catalyst for the Sonogashira reaction of aryl iodides. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.03.111] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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85
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Dinges J, Albert DH, Arnold LD, Ashworth KL, Akritopoulou-Zanze I, Bousquet PF, Bouska JJ, Cunha GA, Davidsen SK, Diaz GJ, Djuric SW, Gasiecki AF, Gintant GA, Gracias VJ, Harris CM, Houseman KA, Hutchins CW, Johnson EF, Li H, Marcotte PA, Martin RL, Michaelides MR, Nyein M, Sowin TJ, Su Z, Tapang PH, Xia Z, Zhang HQ. 1,4-Dihydroindeno[1,2-c]pyrazoles with Acetylenic Side Chains as Novel and Potent Multitargeted Receptor Tyrosine Kinase Inhibitors with Low Affinity for the hERG Ion Channel. J Med Chem 2007; 50:2011-29. [PMID: 17425296 DOI: 10.1021/jm061223o] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of a novel series of 1,4-dihydroindeno[1,2-c]pyrazoles with acetylene-type side chains is described. Optimization of those compounds as KDR kinase inhibitors identified 8, which displayed an oral activity in an estradiol-induced murine uterine edema model (ED50 = 3 mg/kg) superior to Sutent (ED50 = 9 mg/kg) and showed potent antitumor efficacy in an MX-1 human breast carcinoma xenograft tumor growth model (tumor growth inhibition = 90% at 25 mg/kg.day po). The compound was docked into a homology model of the homo-tetrameric pore domain of the hERG potassium channel to identify strategies to improve its cardiac safety profile. Systematic interruption of key binding interactions between 8 and Phe656, Tyr652, and Ser624 yielded 90, which only showed an IC50 of 11.6 microM in the hERG patch clamp assay. The selectivity profile for 8 and 90 revealed that both compounds are multitargeted receptor tyrosine kinase inhibitors with low nanomolar potencies against the members of the VEGFR and PDGFR kinase subfamilies.
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Affiliation(s)
- Jürgen Dinges
- Global Pharmaceutical Research and Development, Abbott Laboratories, 200 Abbott Park Road, Abbott Park, Illinois 60064-6217, USA.
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86
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Chinchilla R, Najera C. The Sonogashira Reaction: A Booming Methodology in Synthetic Organic Chemistry. Chem Rev 2007; 107:874-922. [PMID: 17305399 DOI: 10.1021/cr050992x] [Citation(s) in RCA: 2264] [Impact Index Per Article: 133.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Rafael Chinchilla
- Departamento de Química Orgánica and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Facultad de Ciencias, Apartado 99, 03080 Alicante, Spain.
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87
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Doucet H, Hierso JC. Palladium-Katalysatorsysteme für die Synthese von konjugierten Eninen durch Sonogashira-Kupplungen und verwandte Alkinylierungen. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200602761] [Citation(s) in RCA: 199] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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88
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Doucet H, Hierso JC. Palladium-Based Catalytic Systems for the Synthesis of Conjugated Enynes by Sonogashira Reactions and Related Alkynylations. Angew Chem Int Ed Engl 2007; 46:834-71. [PMID: 17335070 DOI: 10.1002/anie.200602761] [Citation(s) in RCA: 680] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Conjugated alkynes are recurring building blocks in natural products, a wide range of industrial intermediates, pharmaceuticals and agrochemicals, and molecular materials for optics and electronics. The palladium-catalyzed cross-coupling between sp(2)-hybridized carbon atoms of aryl, heteroaryl, and vinyl halides with sp-hybridized carbon atoms of terminal acetylenes is one of the most important developments in the field of alkyne chemistry over the past 50 years. The seminal work of the 1970s has initiated an intense search for more general and reliable reaction conditions. The interest in the catalytic activation of demanding substrates, the need to minimize the consumption of depletive resources, and the search for easy access to an increased variety of functionalized enynes has led to the current generations of high-turnover catalysts. This Review gives an overview of the highly efficient palladium catalyst systems for the direct alkynylation of C(sp(2)) halides with terminal alkynes, both in homogeneous and heterogeneous phases.
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Affiliation(s)
- Henri Doucet
- Institut Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes, Catalyse et Organometalliques, Campus de Beaulieu, 35042 Rennes, France.
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89
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Raju S, Kumar PR, Mukkanti K, Annamalai P, Pal M. Facile synthesis of substituted thiophenes via Pd/C-mediated sonogashira coupling in water. Bioorg Med Chem Lett 2006; 16:6185-9. [PMID: 17011779 DOI: 10.1016/j.bmcl.2006.09.041] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2006] [Revised: 08/31/2006] [Accepted: 09/12/2006] [Indexed: 10/24/2022]
Abstract
The first successful Pd/C-mediated Sonogashira coupling of iodothiophene with terminal alkynes in water is described here. Pd/C-CuI-PPh(3) was found to be an efficient catalyst system for this coupling reaction. Using this economic and reliable process a variety of acetylenic thiophenes with a wide range of functional groups were prepared in good yields. Synthetic applications and in vitro anticancer properties of some of the compounds synthesized are described.
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Affiliation(s)
- Sirisilla Raju
- Custom Pharmaceutical Services, Bollaram Road, Miyapur, Hyderabad 500049, India
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90
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Schramm (née Dediu) O, Müller TJ. Microwave-Accelerated Coupling-Isomerization Reaction (MACIR) – A General Coupling-Isomerization Synthesis of 1,3-Diarylprop-2-en-1-ones. Adv Synth Catal 2006. [DOI: 10.1002/adsc.200600280] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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91
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Costa AI, Prata JV. Synthesis and Rh(I)-catalyzed polymerization of 1,3-diphenylyne-calix[4]arene compounds: Novel conjugated, calixarene-based polymers. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/pola.21797] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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92
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Ruiz J, Cutillas N, López F, López G, Bautista D. A Copper- and Amine-Free Sonogashira Reaction of Aryl Halides Catalyzed by 1,3,5-Triaza-7-phosphaadamantane Palladium Systems. Organometallics 2006. [DOI: 10.1021/om060636k] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- José Ruiz
- Departamento de Química Inorgánica, Universidad de Murcia, 30071-Murcia, Spain, and SUIC, Edificio SACE, Universidad de Murcia, 30071-Murcia, Spain
| | - Natalia Cutillas
- Departamento de Química Inorgánica, Universidad de Murcia, 30071-Murcia, Spain, and SUIC, Edificio SACE, Universidad de Murcia, 30071-Murcia, Spain
| | - Francisco López
- Departamento de Química Inorgánica, Universidad de Murcia, 30071-Murcia, Spain, and SUIC, Edificio SACE, Universidad de Murcia, 30071-Murcia, Spain
| | - Gregorio López
- Departamento de Química Inorgánica, Universidad de Murcia, 30071-Murcia, Spain, and SUIC, Edificio SACE, Universidad de Murcia, 30071-Murcia, Spain
| | - Delia Bautista
- Departamento de Química Inorgánica, Universidad de Murcia, 30071-Murcia, Spain, and SUIC, Edificio SACE, Universidad de Murcia, 30071-Murcia, Spain
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93
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Filichev VV, Gaber H, Olsen TR, Jørgensen PT, Jessen CH, Pedersen EB. Twisted Intercalating Nucleic Acids – Intercalator Influence on Parallel Triplex Stabilities. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600168] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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94
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Hossain MM, Kawamura Y, Yamashita K, Tsukayama M. Microwave-assisted regioselective synthesis of natural 6-prenylpolyhydroxyisoflavones and their hydrates with hypervalent iodine reagents. Tetrahedron 2006. [DOI: 10.1016/j.tet.2006.06.066] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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95
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Hammershøj P, Reenberg TK, Pittelkow M, Nielsen CB, Hammerich O, Christensen JB. Synthesis and Properties of 2,3-Dialkynyl-1,4-benzoquinones. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600081] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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96
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97
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Zheng SL, Reid S, Lin N, Wang B. Microwave-assisted synthesis of ethynylarylboronates for the construction of boronic acid-based fluorescent sensors for carbohydrates. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.02.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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98
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Maes BUW. Transition-Metal-Based Carbon–Carbon and Carbon–Heteroatom Bond Formation for the Synthesis and Decoration of Heterocycles. ACTA ACUST UNITED AC 2006. [DOI: 10.1007/7081_002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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99
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Kaval N, Appukkuttan P, Van der Eycken E. The Chemistry of 2-(1H)-Pyrazinones in Solution and on Solid Support. TOPICS IN HETEROCYCLIC CHEMISTRY 2006. [DOI: 10.1007/7081_007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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100
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Thathagar MB, Rothenberg G. One-pot Pd/C catalysed ‘domino’ HALEX and Sonogashira reactions: a ligand- and Cu-free alternative. Org Biomol Chem 2006; 4:111-5. [PMID: 16358004 DOI: 10.1039/b513450a] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The advantages of combining heterogeneous catalysis and aryl chloride substrates for cross-coupling are introduced. A heterogeneous Pd/C catalyst is used for activating aryl bromides and electron withdrawing aryl chlorides via a one-pot 'domino' HALEX-Sonogashira reaction. No ligand or co-catalyst is required, and the cross-coupling products are obtained in moderate to good yields. The influence of the solvent, base, iodide source and catalyst is evaluated. The catalyst is reusable for at least six consecutive reaction cycles. A variation on this reaction using catalytic amounts of KI is also proposed.
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Affiliation(s)
- Mehul B Thathagar
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV, Amsterdam, The Netherlands
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