Sökning: "triflate"

Visar resultat 1 - 5 av 19 avhandlingar innehållade ordet triflate.

  1. 1. Structural and Spectroscopic Studies of Solvated Metal Ions

    Författare :Alireza Abbasi; Magnus Sandström; Ernö Brucher; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Coordination; Solvation; X-ray diffraction; EXAFS; IR; Raman; Normal coordinate analysis; trivalent metal ions; dmso; triflate; hydration; Chemistry; Kemi;

    Sammanfattning : Crystallographic and spectroscopic studies have been performed of structures, coordination and chemical bonding for series of trivalent metal ions solvated by two oxygen-coordinating solvents, water and dimethyl sulfoxide (DMSO). The hydrated scandium(III) and lanthanoid(III) ions, La to Lu, are surrounded by tricapped trigonal prisms of aqua ligands in the isomorphous series of trifluoromethanesulfonates, [M(H2O)n](CF3SO3)3. LÄS MER

  3. 2. New Methods for the Synthesis of 3-Substituted 1-Indanones : A Palladium-Catalyzed Approach

    Författare :Anna Arefalk; Anders Hallberg; Mats Larhed; Juan Carlos Carretero; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Heck; palladium; indanone; annulation; microwave heating; triflate; sulfinyl imine; HIV-1 protease inhibitor; Organisk kemi; Organic chemistry; Organisk kemi;

    Sammanfattning : In medicinal chemistry, there is a constant need for new preparative methods, both to make the synthesis process more effective, and to increase the accessibility to a wide variety of compounds. A number of different approaches can be used to attain these goals. LÄS MER

  4. 3. Efficient and High-Yielding Routes to Diaryliodonium Salts

    Författare :Marcin Bielawski; Berit Olofsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Hypervalent Iodine Compounds; One-Pot Synthesis; Regiospecific Synthesis; Aromatic Substitution; Aryl Iodides; Arenes; Boronic Acids; Organic chemistry; Organisk kemi;

    Sammanfattning : This thesis summarizes three novel and general reaction protocols for the synthesis of diaryliodonium salts. All protocols utilize mCPBA as oxidant and the acids used are either TfOH, to obtain triflate salts, or BF3•Et2O that gives the corresponding tetrafluoroborate salts in situ. LÄS MER

  5. 4. [11C]Carbon Monoxide in Palladium- / Selenium-Promoted Carbonylation Reactions : Synthesis of 11C-Imides, Hydrazides, Amides, Carboxylic Acids, Carboxylic Esters, Carbothioates, Ketones and Carbamoyl Compounds

    Författare :Farhad Karimi; Kalman Szabo; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi; Organic chemistry; Organisk kemi; organisk kemi; Organic Chemistry;

    Sammanfattning : [11C]Carbon monoxide in low concentrations has been used in palladium- or seleniummediated carbonylation reactions such as the synthesis of 11C-imides, hydrazides, amides, carboxylic acids, esters, carbothioates, ketones and carbamoyl compounds.In these reactions aryl iodides have been used in most cases. LÄS MER

  7. 5. Synthesis of Oligosaccharides for Interaction Studies with Various Lectins

    Författare :Emiliano Gemma; Stefan Oscarson; Martina Lahmann; Hans Kamerling; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Organic chemistry; Organisk kemi;

    Sammanfattning : In this thesis, the syntheses of oligosaccharides for interaction studies with various lectins are described. The first section reports the syntheses of tetra, tri- and disaccharides corresponding to truncated versions of the glucosylated arm of Glc1Man9(GlcNAc)2, found in the biosynthesis of N-glycans. LÄS MER