• A simple synthetic route to methyl 3-fluoropyridine-4-carboxylate by nucleophilic aromatic substitution 

      Tjosås, Freddy; Fiksdahl, Anne (Journal article; Peer reviewed, 2006)
      The nitro group of methyl 3-nitropyridine-4-carboxylate (1) has successfully been replaced by fluoride anion via nucleophilic aromatic substitution to give the 3-fluoropyridine- 4-carboxylate 2.
    • Aminoalkyl-functionalized pyridines as high cyclic capacity CO2 absorbents 

      Evjen, Sigvart; Løge, Oda Siebke; Fiksdahl, Anne; Knuutila, Hanna K (Journal article; Peer reviewed, 2019)
      Recent years have witnessed a growing academic interest in development of new CO2 capture solvents to reduce the capture costs. This study focused on nine picolylamines (three commercial and six synthesized) and one ...
    • Degradation of Amines 

      Johansen, Maren Teresa (Master thesis, 2013)
      In view of the rising amounts of greenhouse gases in the atmosphere, preventing CO2 emissions has become increasingly important. The combustion of fossil fuels for energy production and transportation is a large contributor ...
    • Degradative behavior and toxicity of alkylated imidazoles 

      Evjen, Sigvart; Åstrand, Ove Alexander Høgmoen; Gaarder, Mona; Paulsen, Ragnhild Elisabeth; Fiksdahl, Anne; Knuutila, Hanna K (Journal article; Peer reviewed, 2020)
      The thermal and oxidative degradation behavior and the corrosiveness of imidazole (Im), 2-methylimidazole (2MIm), 2-ethyl-4-methylimidazole (2E4MIm), 2,4,5-trimethylimidazole (2,4,5MIm), and 1,2,4,5-tetramethylimidazole ...
    • Development of Chiral Gold(III)-complexes and Studies of Their Catalytic Activity 

      Østrem, Elise (Master thesis, 2018)
      The purpose of this master project was to synthesise chiral ligands and coordinate these to gold(III), thereby developing novel chiral gold(III)-complexes. These complexes were then used as gold-catalysts in cyclopropanation ...
    • Dual-gold(I)-generated trifluoromethylation of terminal alkynes With Togni’s reagent 

      Siah, Huey-San Melanie; Fiksdahl, Anne (Journal article; Peer reviewed, 2017)
      The interaction of a Au(I) catalyst (JohnPhosAu(I)-MeCN/SbF6) and the Togni’s reagent 1, as a source of electrophilic trifluoromethyl group, has been studied in order to develop gold-catalysed alkyne trifluoromethylation ...
    • Fremstilling av et kiralt triazoliumbasert NHC-salt og anvendelse i asymmetrisk syntese 

      Solvang, Tina (Master thesis, 2011)
      Et kiralt triazoliumbasert N-heterosykliskkarben-salt (NHC) 1 har blitt fremstilt fra L-fenylalanin 2 og fenylhydrazinhydroklorid 12 i en synteserute som går over fem trinn, og med et totalutbytte på 10%. NHC-salt 1 er ...
    • Fremstilling av propargylestere og anvendelse i gullkatalyserte reaksjoner 

      Tungen, Jørn Eivind (Master thesis, 2011)
      Hovedmålet i masteroppgaven har vært å utforske nye gullkatalyserte reaksjoner og anvendelser av propargylestere og allenestere. Allen 14, ble syntetisert fra propargylbromid over to trinn, ved en kjent prosedyre. Kationiske ...
    • Gold(I) Catalyzed Tandem Cyclization Reactions 

      Rajinder Kaur, Maya (Master thesis, 2012)
      Through this study it has been observed that in contrast to propargyl esters which give cyclopropyl products, the high reactivity of propargyl acetals allows a new tandem cyclization to take place, resulting in bicyclic ...
    • Gold(I) Catalyzed Tandem Cyclization Reactions with Propargyl Acetals 

      Hogsnes, Morten Christian (Master thesis, 2013)
      The main goal of this thesis has been to further explore gold(I) catalyzed cyclization reactions including propargyl acetals. Gold(I) catalysts have a strong affinity to triple bonds, and alkyne-gold complexes are readily ...
    • Gold(III) Complexes: Ligand Design and Catalytic Properties 

      Reiersølmoen, Ann Christin (Doctoral theses at NTNU;2020:264, Doctoral thesis, 2020)
      Gold catalysis has become one of the fastest growing fields in organic chemistry, providing new transformations and offering excellent chemoselectivities at mild reaction conditions. So far, the main focus within Au(III) ...
    • Gold(III)‐Catalysed cis‐to‐trans Cyclopropyl Isomerization 

      Reiersølmoen, Ann Christin; Østrem, Elise; Fiksdahl, Anne (Journal article; Peer reviewed, 2018)
      Novel chiral gold(III) complexes, based on bisoxazoline (BOX) and 2‐pyridyl‐(–)menthol ligands, were prepared and characterised (X‐ray), and their catalytic properties in cyclopropanation reactions of propargyl esters with ...
    • High-Capacity Amine-Imidazole Solvent Blends for CO2 Capture 

      Evjen, Sigvart; Fiksdahl, Anne; Knuutila, Hanna K (Journal article; Peer reviewed, 2019)
      The CO2 absorption performance of aqueous solvent blends containing four imidazoles (2-MeIm, 2-Et-4-MeIm, 2,4,5-MeIm and 1,2,4,5-MeIm) and four promoters (MEA, DEA, PZ, and MAPA) were investigated using a small-scale ...
    • Hydroxyl Functionalized Pyridinium Ionic Liquids: Experimental and Theoretical Study on Physicochemical and Electrochemical Properties 

      Kallidanthiyil Chellappan, Lethesh; Venkatraman, Vishwesh; Fiksdahl, Anne; Evjen, Sigvart (Journal article; Peer reviewed, 2019)
      Structurally modified hydroxyl functionalized pyridinium ionic liquids (ILs), liquid at room temperature, were synthesized and characterized. Alkylated N-(2-hydroxyethyl)-pyridinium ILs were prepared from alkylpyridines ...
    • In silico prediction and experimental verification of ionic liquid refractive indices 

      Venkatraman, Vishwesh; Jaganathan, Joshua Raj; Evjen, Sigvart; Kallidanthiyil Chellappan, Lethesh; Fiksdahl, Anne (Journal article; Peer reviewed, 2018)
      Ionic liquids (ILs) have seen increasing use as environmentally friendly solvents in a wide array of applications from energy to pharmaceuticals. Among the many properties of interest, the refractive index, is of considerable ...
    • Methyl 5-nitro-2-(phenylamino)pyridine-4-carboxylate 

      Hansen, Lars Kr.; Tjosas, Freddy; Fiksdahl, Anne (Journal article; Peer reviewed, 2006)
      In the crystal structure of the title compound, C13H11N3O4, there are two independent molecules in the asymmetric unit. In each case, the methylcarboxylate group is twisted by about 90 degrees relative to the rest of the ...
    • New Polyalkylated Imidazoles Tailored for Carbon Dioxide Capture 

      Evjen, Sigvart; Fiksdahl, Anne; Pinto, Diego Di Domenico; Knuutila, Hanna K (Journal article; Peer reviewed, 2018)
      Aqueous polyalkylated imidazoles have gained interest as potential CO2 capture solvents due to their high oxidative stability and low vapor pressures compared to traditional amines. In this work, 21 aqueous solutions of ...
    • Novel Au(I) Catalyzed Cycloaddition Reactions of Propargyl Acetals 

      Evjen, Sigvart (Master thesis, 2015)
      The goal of this master's thesis was to investigate novel gold(I) catalyzed cycloaddition reactions of nitrones and azides with propargyl acetals. Screening of the reactions was performed by testing reagents with electron ...
    • Predicting ionic liquid melting points using machine learning 

      Venkatraman, Vishwesh; Evjen, Sigvart; Knuutila, Hanna K; Fiksdahl, Anne; Alsberg, Bjørn Kåre (Journal article; Peer reviewed, 2018)
      The melting point (Tm) of an ionic liquid (IL) is of crucial importance in many applications. The Tm can vary considerably depending on the choice of the anion and cation. This study explores the use of various machine ...
    • Rapid, comprehensive screening of ionic liquids towards sustainable applications 

      Venkatraman, Vishwesh; Evjen, Sigvart; Kallidanthiyil Chellappan, Lethesh; Raj, Jaganathan Joshua; Knuutila, Hanna K; Fiksdahl, Anne (Peer reviewed; Journal article, 2019)
      A computational screening strategy applied to 8 million synthetically diverse ionic liquids, demonstrates its value for sustainable solvent design. In contrast to previous studies which have largely focused on single ...