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  • 1.
    Kathiravan, Suppan
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Electrochemically enabled copper-catalyzed C-H amination using electricity as an oxidant2019In: Abstracts of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 257Article in journal (Other academic)
  • 2.
    Kathiravan, Suppan
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Towards novel perfluoroalkylation of arenes2017In: Abstract of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 254Article in journal (Other academic)
  • 3.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Ghosh, Shishir
    Kings Coll London, UK.
    Hogarth, Graeme
    Kings Coll London, UK.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    Copper catalysed amidation of aryl halides through chelation assistance2015In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 51, no 23, p. 4834-4837Article in journal (Refereed)
    Abstract [en]

    A copper mediated C-N bond formation for the amidation of aryl halides using 8-aminoquinoline has been developed. This strategy provides efficient access to amides bearing two contiguous heterocyclic moieties and does not require the presence of additional ligands.

  • 4.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    Cobalt Catalyzed, Regioselective C(sp(2))-H Activation of Amides with 1,3-Diynes2017In: Organic Letters, ISSN 1523-7060, E-ISSN 1523-7052, Vol. 19, no 18, p. 4758-4761Article in journal (Refereed)
    Abstract [en]

    The development of a first row transition metal (cobalt)-based catalyst for the as yet unexplored CH activation-driven reaction of 1,3-diynes, themselves a functional class of interest in a range of application areas, to form isoquinolinonesan important structural motif in a number of biologically active substancesis presented. This versatile and inexpensive catalyst employs a covalently attached bidendate-directing group, 8-aminoquinoline. The template directs the CH activation and facilitates the synthesis of a wide range of alkynylated heterocycles under mild conditions and with excellent regioselectivity. This strategy provides a novel and efficient route to diverse heterocyclic frameworks as demonstrated by its late stage application in bisheterocycle syntheses.

  • 5.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    Monoprotected L-Amino Acid (L-MPAA), Accelerated Bromination, Chlorination, and Iodination of C(sp(2))-H Bonds by Iridium(III) Catalysis2017In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 23, no 29, p. 7031-7036Article in journal (Refereed)
    Abstract [en]

    Halogenated arenes are important structural motifs commonly found in biologically active molecules and used for a variety of transformations in organic synthesis. Herein, we report the mono-protected L-amino acid (L-MPAA) accelerated iridium(III)-catalyzed halogenation of (hetero)anilides at room temperature. This reaction constitutes the first example of an iridium(III)/L-MPAA-catalyzed general halogenation of (hetero)arenes through C(sp(2))-H activation. Furthermore, we demonstrate the potential utility of our method through its use in the synthesis of a quinolone derivative.

  • 6.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala university.
    Palladium Catalyzed Vinyltrifluoromethylation of Aryl Halides through Decarboxylative Cross-Coupling with 2-(Trifluoromethyl)acrylic Acid2015In: Organic Letters, ISSN 1523-7060, E-ISSN 1523-7052, Vol. 17, p. 1874-1877Article in journal (Refereed)
    Abstract [en]

    An efficient Pd-catalyzed stereoselective vinyltrifluoromethylation of aryl halides, through decarboxylative cross-coupling with 2-(trifluoromethyl)acrylic acid is described. The ready availability of the starting materials, the high level of functional group tolerance, and excellentE/Z selectivity make this protocol a safe and operationally convenient strategy for efficient synthesis of vinyltrifluoromethyl derivatives.

  • 7.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    Rhodium-Catalyzed Oxidative Perfluoroalkenylation by Carbonyl Group Directed C-H Bond Activation2014In: European Journal of Organic Chemistry, ISSN 1434-193X, E-ISSN 1099-0690, no 32, p. 7211-7219Article in journal (Refereed)
    Abstract [en]

    The selective activation of C-H bonds under mild Rh-III catalytic conditions has been developed for the perfluoroalkenylation of various cyclic and acyclic aromatic ketones. This protocol uses versatile reagents and mild conditions. It requires a very low catalyst loading and has exceptional functional group tolerance as well as provides products in good to excellent yields. An application of this approach was described for the preparation of perfluoroethyl acrylate derivatives of biologically active substances.

  • 8.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    Rhodium(III)-catalysed aerobic synthesis of highly functionalized indoles from N-arylurea under mild conditions through C-H activation2014In: Chemical Communications, ISSN 1359-7345, E-ISSN 1364-548X, Vol. 50, no 95, p. 14964-14967Article in journal (Refereed)
    Abstract [en]

    A Rh(III) catalysed amino arylation of alkynes using copper as the terminal oxidant for regeneration of the catalytically active species under aerobic conditions is described. This novel C-H activation reaction was applied to the synthesis of a wide range of substituted indoles from N-arylureas.

  • 9.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences. Uppsala University.
    Rhodium(III)-catalysed, redox-neutral C(sp(2))-H alkenylation using pivalimide as a directing group with internal alkynes2017In: Tetrahedron Letters, ISSN 0040-4039, E-ISSN 1359-8562, Vol. 58, no 1, p. 1-4Article in journal (Refereed)
    Abstract [en]

    In the presence of [RhCp*Cl(2)l(2), N-pivaloyl anilines react with internal alkynes to give the corresponding 2-alkenylpivalimides under redox neutral conditions through C-H activation. This redox neutral hydroarylation, which does not require an external organic acid, unlocks a regioselective synthetic route to 2-alkenyl anilines and is generally applicable to diversely substituted electron rich and electron poor pivalimides. (C) 2016 Elsevier Ltd. All rights reserved.

  • 10.
    Kathiravan, Suppan
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Suriyanarayanan, Subramanian
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Electrooxidative Amination of sp2 C–H Bonds: Coupling of Amines with Aryl Amides via Copper Catalysis2019In: Organic Letters, ISSN 1523-7060, E-ISSN 1523-7052, Vol. 21, no 7, p. 1968-1972Article in journal (Refereed)
    Abstract [en]

    Metal-catalyzed cross-coupling reactions are among the most important transformations in organic synthesis. However, the use of C−H activation for sp2 C−N bond formation remains one of the major challenges in the field of crosscoupling chemistry. Described herein is the first example of the synergistic combination of copper catalysis and electrocatalysis for aryl C−H amination under mild reaction conditions in an atom-and step-economical manner with the liberation of H2 as the sole and benign byproduct.

  • 11.
    Suriyanarayanan, Subramanian
    et al.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Olsson, Gustaf D.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Kathiravan, Suppan
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Ndizeye, Natacha
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Nicholls, Ian A.
    Linnaeus University, Faculty of Health and Life Sciences, Department of Chemistry and Biomedical Sciences.
    Non-Ionic Deep Eutectic Liquids: Acetamide-Urea Derived Room Temperature Solvents2019In: International Journal of Molecular Sciences, ISSN 1422-0067, E-ISSN 1422-0067, Vol. 20, no 12, article id 2857Article in journal (Refereed)
    Abstract [en]

    A family of non-ionic deep eutectic liquids has been developed based upon mixtures of solid N-alkyl derivatives of urea and acetamide that in some cases have melting points below room temperature. The eutectic behaviour and physical characteristics of a series of eleven eutectic mixtures are presented, along with a molecular dynamics study-supported hypothesis for the origin of the non-ideal mixing of these substances. Their use as solvents in applications ranging from natural product extraction to organic and polymer synthesis are demonstrated.

1 - 11 of 11
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