Tom Wirtanen

@vttresearch.com

Senior Scientist in Industrial Synthesis & Catalysis
VTT Technical Research Centre of Finland

Tom Wirtanen


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https://researchid.co/tomppiz

RESEARCH, TEACHING, or OTHER INTERESTS

Organic Chemistry
27

Scopus Publications

920

Scholar Citations

16

Scholar h-index

20

Scholar i10-index

Scopus Publications

  • Depolymerisation of γ-Valerolactone Organosolv Lignins with Unsupported Molybdenum-Based Catalysts
    Silja Känsäkoski, Saravanan Kasipandi, Taina Ohra‐aho, Tom Wirtanen, Juha Lehtonen, David Martin Alonso, Francisco Vila, Sari Rautiainen
    Chemsuschem, 2026
    Lignin is an attractive feedstock for a wide variety of applications ranging from aromatic chemicals and transportation fuels to resins and coatings. Emerging biorefinery concepts, like the organosolv process, enable the separation of all the lignocellulose components, and moreover, produce lignins of high quality and purity susceptible to valorisation by depolymerisation. In this work, we focus on the depolymerisation of lignins obtained by γ ‐valerolactone (GVL) organosolv fractionation of four biomass feedstocks, eucalyptus, white birch, sugarcane bagasse and Scots pine. We demonstrate that lignins extracted with the GVL process are depolymerised using unsupported molybdenum‐based catalysts under reductive conditions in supercritical ethanol. As a result, over 90% yields of low‐molecular‐weight lignin oils are obtained with minimal char formation, yields of the aromatic monomers being 7–16 wt%. Furthermore, the design of experiments method is used to analyse the effect of depolymerisation conditions, catalyst, hydrogen loading and temperature, on the yields and properties of the product fractions. Notably, we show that the properties of the lignin oils and monoaromatics can be tuned towards the targeted application by modifying the depolymerisation conditions.
  • Cascade synthesis of diarylamines catalyzed by oxygen-rich and porous carbon
    Anna Lenarda, Itisha Jain, Aleksi Kaleva, Valtteri Oksanen, Sami Heikkinen, Risto Koivula, Tom Wirtanen, Michele Melchionna, Tao Hu, Juho Helaja
    Green Chemistry, 2026
    Porous activated carbon bearing OH and CO groups, in the presence of a molecular oxidant, catalyzes metal-free cascade synthesis of diarylamines via enamine formation and oxidative aromatization.
  • Synthesis of aliphatic α-hydroxy carboxylic acids via electrocarboxylation of aldehydes
    Valtteri Oksanen, Kiia Malinen, Tom Wirtanen
    Rsc Advances, 2025
    A novel method for synthesis of aliphatic α-hydroxy acids is achieved via electrocarboxylation of aldehydes with CO 2 in an undivided cell with stable carbon based electrodes.
  • TEMPO-Mediated Paired Electrosynthesis of Ethylene Glycol from Formaldehyde and Methanol at High Current Densities
    Valtteri Oksanen, Kiia Malinen, Tao Hu, Alexander Reznichenko, Tom Wirtanen
    Chemsuschem, 2025
    Herein, a paired electrosynthesis of ethylene glycol from formaldehyde and methanol facilitated by TEMPO is reported. The use of TEMPO accentuates formaldehyde production at the anode, providing additional formaldehyde into the cathodic coupling process. The reaction is performed in water/methanol solution in a simple undivided cell using sulfuric acid‐treated graphite electrodes with industrially feasible current densities between 300 and 350 mA cm−2. Other components of the reaction are sodium chloride which is used as a supporting electrolyte and tributylmethylammonium chloride which raises the current efficiency. With a slight modification in the reaction temperature and current density, the outcome can be tuned from high current efficiency toward higher chemical yields. The conditions of the batch reaction are successfully transferred to a continuous flow‐cell arrangement. Mechanistic studies indicate the involvement of hydroxymethyl radicals in the electrolysis, and deuterium‐labeling experiments show the partial conversion of methanol into formaldehyde and ethylene glycol.
  • Phosphorus-containing lignin intermediates as reactive bio-based flame-retardants for polyurethane and acrylic coatings for wood
    Maddalen Puyadena, Petri Widsten, Tom Wirtanen, Miriam Kellock, Gurutze Ortega, Agurtzane Mugica, Eider Matxinandiarena, Idoia Etxeberria, Loli Martin, Amaia Agirre, Aitor Barrio, Alba González, Lourdes Irusta
    Industrial Crops and Products, 2024
    Wood has limited fire-retardant properties but this can be improved by using coatings with sustainable and cost-effective flame retardants. For this purpose, lignin is a potential candidate due to its highly aromatic structure and low cost. However, its structure should be modified to achieve good fire behaviour. Thus, phosphorus was incorporated into kraft lignin and the compounds obtained were used for the synthesis of two types of wood coatings: Polyurethanes and Polyacrylates. Phosphorus nuclear magnetic resonance was used to characterize the modified lignin, together with elemental analysis. The incorporation of lignin into the polymers was confirmed by infrared spectroscopy and gel content measurements. The effectiveness of the phosphorus-containing lignin intermediates as bio-based flame retardants was measured by thermogravimetric analysis (TGA), pyrolysis combustion flow calorimetry (PCFC) and cone calorimetry. According to the results, phosphorylated lignin increased the residue and decreased the total heat release of the polyurethane and acrylic coatings. In addition, slight improvements in fire resistance were observed in wood panels coated with acrylic, while no changes were observed in wood coated with polyurethane.
  • Tunable Catalytic Reduction of Furfural with Formic Acid and Sodium Formate Into Furan and Tetrahydrofuran Derivatives
    Valtteri Oksanen, Nicolaas van Strien, Tyko Viertiö, Niko Vuorio, Bibesh Gauli, Kirsti Helosuo, Veronika Meriläinen, Emmi Myllykylä, Sari Rautiainen, Tom Wirtanen
    Chemcatchem, 2024
    Furfural is an attractive bio‐based platform chemical that has many derivatives of commercial interest. Herein, we show that the selectivity of the direct furfural reduction can be steered from 2‐methylfuran and 2‐methyltetrahydrofuran to furfuryl alcohol and tetrahydrofurfuryl alcohol by varying the ratio of formic acid and sodium formate. These reagents take the role of terminal reductants in the disclosed heterogeneous Pd‐catalysed process. We report the development and optimisation of the reaction conditions for three different products directly from furfural: 2‐methyltetrahydrofuran, tetrahydrofurfuryl alcohol and 2‐methylfuran which were obtained in 59 %, 46 %, and 63 % selectivity, respectively. Furthermore, the protocol uses commercially available Pd/Al2O3 as catalyst and the formic acid and sodium formate can be obtained from biogenous sources.
  • Choice of the Right Supporting Electrolyte in Electrochemical Reductions: A Principal Component Analysis
    Florian Mast, Maximilian M. Hielscher, Tom Wirtanen, Max Erichsen, Jürgen Gauss, Gregor Diezemann, Siegfried R. Waldvogel
    Journal of the American Chemical Society, 2024
    We present an analysis of a set of molecular, electrical, and electronic properties for a large number of the cations of quaternary ammonium salts usually employed as supporting electrolytes in cathodic reduction reactions. The goal of the present study is to define a measure for the quality of a supporting electrolyte in terms of the yield of the reaction considered. We performed a principal component analysis using the normalized values of the properties in order to lower the number of relevant reaction coordinates and find that the integral variance of 13 properties can well be represented by three principal components. The yield of the electrochemical hydrodimerization of acrylonitrile employing different quaternary ammonium salts as supporting electrolytes was determined in a series of experiments. We found only a very weak correlation between the yield and the values of the properties but a strong correlation between the yield and the values of the most important principal component. Very similar results are obtained for two further existing systematic experimental studies of the impact of the supporting electrolyte on the yield of cathodic reductions. For all three example reactions, a supervised regression using the two most important principal components as variables yields excellent values for the coefficients of determination. For comparison, we also applied our methodology to sets of purely structure-based features that are usually employed in cheminformatics and obtained results of almost similar quality. We therefore conjecture that our methodology in combination with a small number of experiments can be used to predict the yield of a given cathodic reduction on the basis of the properties of the supporting electrolyte.
  • Highly selective scalable electrosynthesis of 4-hydroxybenzo[e]-1,2,4-thiadiazine-1,1-dioxides
    Johannes Winter, Tobias Prenzel, Tom Wirtanen, María de Jesús Gálvez-Vázquez, Kamil Hofman, Dieter Schollmeyer, Siegfried R. Waldvogel
    Cell Reports Physical Science, 2024
    4 H -4-Hydroxybenzo[ e ]-1,2,4-thiadiazine-1,1-dioxides are based on a widely found structural motif for pharmaceutical applications, having an additional unique exocyclic N–O bond that is not accessible by conventional synthetic routes. Electrochemistry offers a sustainable tool for the direct synthesis of these heterocyclic structures containing this N -hydroxy modification. Here, we report a highly selective synthesis of 4 H -4-hydroxybenzo[ e ]-1,2,4-thiadiazine-1,1-dioxides by direct reduction of widely available nitro arenes in almost quantitative yields. The electro-synthetic protocol is applied to more than 40 diverse examples, highlighting the versatility of this method. Furthermore, the technical relevance is demonstrated by two multi-gram-scale syntheses.
  • Nickel-Electrocatalyzed Synthesis of Bifuran-Based Monomers
    Valtteri Oksanen, Sari Rautiainen, Tom Wirtanen
    Chemistry A European Journal, 2023
    Bifuran motifs can be accessed with nickel‐bipyridine electrocatalyzed homocouplings of bromine‐substituted methyl furancarboxylates, which, in turn, can be prepared from hemicellulose‐derived furfural. The described protocol uses sustainable carbon‐based graphite electrodes in the simplest setup – an undivided cell with constant current electrolysis. The reported method avoids using a sacrificial anode by employing triethanolamine as an electron donor.
  • Cyclic carbonates as building blocks for non-isocyanate polyurethanes
    Soilikki Kotanen, Tom Wirtanen, Riitta Mahlberg, Adina Anghelescu‐Hakala, Tapani Harjunalanen, Pia Willberg‐Keyrilainen, Timo Laaksonen, Essi Sarlin
    Journal of Applied Polymer Science, 2023
    Three different cyclic carbonates (ethylene, propylene, and butylene carbonate) that can be derived from CO2 were successfully polymerized with hexamethylenediamine to form non‐isocyanate polyurethanes (NIPUs) via self‐polycondensation route without the use of harmful di‐isocyanates. Three different catalysts were compared for their performance in self‐polycondensation. Increasing the side chain length in cyclic carbonate increased the amount of urea side reaction and decreased the solubility of the final product. The increased amount of urea lead to a more thermoset behavior as the melting and decomposition took place simultaneously. Furthermore, the extent of urea side reaction and melting behavior were adjustable with the selection of the catalyst or polymerization parameters. With ethylene and propylene carbonate based precursors, it was possible to obtain promising melting temperatures and lap shear strength for the NIPUs when optimized polymerization parameters and catalyst were used.
  • Direct Electrochemical Synthesis of 2,3-Disubstituted Quinoline N-oxides by Cathodic Reduction of Nitro Arenes
    Johannes Winter, Tobias Prenzel, Tom Wirtanen, Dieter Schollmeyer, Siegfried R. Waldvogel
    Chemistry A European Journal, 2023
  • Carbon Materials as Catalytic Tools for Oxidative Dehydrogenations and Couplings in Liquid Phase
    Anna Lenarda, Tom Wirtanen, Juho Helaja
    Synthesis Germany, 2022
  • Tetramethylammonium Fluoride: Fundamental Properties and Applications in C-F Bond-Forming Reactions and as a Base
    Vladimir Iashin, Tom Wirtanen, Jesus E. Perea-Buceta
    Catalysts, 2022
  • Cathodic Corrosion of Metal Electrodes—How to Prevent It in Electroorganic Synthesis
    Tom Wirtanen, Tobias Prenzel, Jean-Philippe Tessonnier, Siegfried R. Waldvogel
    Chemical Reviews, 2021
  • Air oxidized activated carbon catalyst for aerobic oxidative aromatizations of N-heterocycles
    Lukas Enders, David S. Casadio, Santeri Aikonen, Anna Lenarda, Tom Wirtanen, Tao Hu, Sami Hietala, Lucília S. Ribeiro, Manuel Fernando R. Pereira, Juho Helaja
    Catalysis Science and Technology, 2021
  • Carbocatalytic Cascade Synthesis of Polysubstituted Quinolines from Aldehydes and 2-Vinyl Anilines
    Mikko K. Mäkelä, Evgeny Bulatov, Kiia Malinen, Juulia Talvitie, Martin Nieger, Michele Melchionna, Anna Lenarda, Tao Hu, Tom Wirtanen, Juho Helaja
    Advanced Synthesis and Catalysis, 2021
  • Divergent Carbocatalytic Routes in Oxidative Coupling of Benzofused Heteroaryl Dimers: A Mechanistic Update
    David S. Casadio, Santeri Aikonen, Anna Lenarda, Martin Nieger, Tao Hu, Stefan Taubert, Dage Sundholm, Mikko Muuronen, Tom Wirtanen, Juho Helaja
    Chemistry A European Journal, 2021
  • Recent Advances in the Electrochemical Reduction of Substrates Involving N−O Bonds
    Tom Wirtanen, Eduardo Rodrigo, Siegfried R. Waldvogel
    Advanced Synthesis and Catalysis, 2020
  • Selective and Scalable Electrosynthesis of 2H-2-(Aryl)-benzo[d]-1,2,3-triazoles and Their N-Oxides by Using Leaded Bronze Cathodes
    Tom Wirtanen, Eduardo Rodrigo, Siegfried R. Waldvogel
    Chemistry A European Journal, 2020
  • Selective and Scalable Electrosynthesis of 2H-2-(Aryl)-benzo[d]-1,2,3-triazoles and Their N-Oxides by Using Leaded Bronze Cathodes
    Tom Wirtanen, Eduardo Rodrigo, Siegfried R. Waldvogel
    Chemistry A European Journal, 2020
  • Carbocatalytic Oxidative Dehydrogenative Couplings of (Hetero)Aryls by Oxidized Multi-Walled Carbon Nanotubes in Liquid Phase
    Tom Wirtanen, Santeri Aikonen, Mikko Muuronen, Michele Melchionna, Marianna Kemell, Fatemeh Davodi, Tanja Kallio, Tao Hu, Juho Helaja
    Chemistry A European Journal, 2019
  • Gold(I)-Catalyzed 1,3-O-Transposition of Ynones: Mechanism and Catalytic Acceleration with Electron-Rich Aldehydes
    Santeri Aikonen, Mikko Muuronen, Tom Wirtanen, Sami Heikkinen, Joshua Musgreave, Jordi Burés, Juho Helaja
    ACS Catalysis, 2018
  • Photoreductive Removal of O-Benzyl Groups from Oxyarene N-Heterocycles Assisted by O-Pyridine-pyridone Tautomerism
    Aleksandar R. Todorov, Tom Wirtanen, Juho Helaja
    Journal of Organic Chemistry, 2017
  • Intermolecular oxidative dehydrogenative 3,3′-coupling of benzo[: B] furans and benzo [b] thiophenes promoted by DDQ/H+: Total synthesis of shandougenine B
    T. Wirtanen, M. Muuronen, J. Hurmalainen, H. M. Tuononen, M. Nieger, J. Helaja
    Organic Chemistry Frontiers, 2016
  • Carbocatalysed Oxidative C sp 2 -C sp 2 Homocouplings of Benzo-Fused Heterocycles
    Tom Wirtanen, Mikko K. Mäkelä, Jawad Sarfraz, Petri Ihalainen, Sami Hietala, Michele Melchionna, Juho Helaja
    Advanced Synthesis and Catalysis, 2015
  • Gold(III)-catalyzed enynamine-cyclopentadiene cycloisomerization with chirality transfer: An experimental and theoretical study indicating involvement of dual au(iii) push-pull assisted cis - Trans isomerism
    Tom Wirtanen, Mikko Muuronen, Michele Melchionna, Michael Patzschke, Juho Helaja
    Journal of Organic Chemistry, 2014
  • Cycloisomerization of 2-alkynylanilines to indoles catalyzed by carbon-supported gold nanoparticles and subsequent homocoupling to 3,3′-biindoles
    Jesus E. Perea-Buceta, Tom Wirtanen, Otto-Ville Laukkanen, Mikko K. Mäkelä, Martin Nieger, Michele Melchionna, Nina Huittinen, Jose A. Lopez-Sanchez, Juho Helaja
    Angewandte Chemie International Edition, 2013

RECENT SCHOLAR PUBLICATIONS

  • Evaluation of 5, 6-cellulosene as a synthon for thiol–ene chemistry: NMR and computational study
    M Dryś, TV Koso, T Wirtanen, KT Rinne-Garmston, A Mollar-Cuni, ...
    2026
  • High-Pressure Electrosynthesis of Succinic and Adipic Acids from CO2 and Ethylene in an Undivided Cell
    V Oksanen, M Luukkonen, K Malinen, N Heikkinen, A Reznichenko, ...
    2026
  • Depolymerisation of γ ‐Valerolactone Organosolv Lignins with Unsupported Molybdenum‐Based Catalysts
    S Känsäkoski, S Kasipandi, T Ohra‐aho, T Wirtanen, J Lehtonen, ...
    ChemSusChem 19 (3), e202500643 , 2026
    2026
  • Cascade synthesis of diarylamines catalyzed by oxygen-rich and porous carbon
    A Lenarda, I Jain, A Kaleva, V Oksanen, S Heikkinen, R Koivula, ...
    Green Chemistry 28 (1), 199-212 , 2026
    2026
    Citations: 2
  • Process And Arrangement for Producing Ethylene Glycol by Paired Electrolysis
    T Wirtanen, V Oksanen
    2025
  • TEMPO‐Mediated Paired Electrosynthesis of Ethylene Glycol from Formaldehyde and Methanol at High Current Densities
    V Oksanen, K Malinen, T Hu, A Reznichenko, T Wirtanen
    ChemSusChem 18 (12), e202500123 , 2025
    2025
  • Synthesis of aliphatic α-hydroxy carboxylic acids via electrocarboxylation of aldehydes
    V Oksanen, K Malinen, T Wirtanen
    RSC advances 15 (53), 45724-45728 , 2025
    2025
    Citations: 1
  • Phosphorus-containing lignin intermediates as reactive bio-based flame-retardants for polyurethane and acrylic coatings for wood
    M Puyadena, P Widsten, T Wirtanen, M Kellock, G Ortega, A Mugica, ...
    Industrial Crops and Products 220, 119261 , 2024
    2024
    Citations: 25
  • Tunable Catalytic Reduction of Furfural with Formic Acid and Sodium Formate Into Furan and Tetrahydrofuran Derivatives
    V Oksanen, N van Strien, T Viertiö, N Vuorio, B Gauli, K Helosuo, ...
    ChemCatChem 16 (20), e202400422 , 2024
    2024
    Citations: 3
  • Choice of the Right Supporting Electrolyte in Electrochemical Reductions: A Principal Component Analysis
    F Mast, MM Hielscher, T Wirtanen, M Erichsen, J Gauss, G Diezemann, ...
    Journal of the American Chemical Society 146 (22), 15119-15129 , 2024
    2024
    Citations: 16
  • Highly selective scalable electrosynthesis of 4-hydroxybenzo [e]-1, 2, 4-thiadiazine-1, 1-dioxides
    J Winter, T Prenzel, T Wirtanen, M de Jesús Gálvez-Vázquez, K Hofman, ...
    Cell Reports Physical Science 5 (5) , 2024
    2024
    Citations: 9
  • Nickel‐Electrocatalyzed Synthesis of Bifuran‐Based Monomers
    V Oksanen, S Rautiainen, T Wirtanen
    Chemistry–A European Journal 29 (71), e202302572 , 2023
    2023
    Citations: 1
  • Cyclic carbonates as building blocks for non‐isocyanate polyurethanes
    S Kotanen, T Wirtanen, R Mahlberg, A Anghelescu‐Hakala, ...
    Journal of Applied Polymer Science 140 (24), e53964 , 2023
    2023
    Citations: 18
  • Carbon dioxide use and removal: Prospects and policies
    L Kujanpää, A Reznichenko, H Saastamoinen, S Mäkikouri, S Soimakallio, ...
    Prime Minister's Office Finland , 2023
    2023
    Citations: 27
  • Direct Electrochemical Synthesis of 2,3‐Disubstituted Quinoline N‐ oxides by Cathodic Reduction of Nitro Arenes
    J Winter, T Prenzel, T Wirtanen, D Schollmeyer, SR Waldvogel
    Chemistry–A European Journal 29 (12), e202203319 , 2023
    2023
    Citations: 21
  • Carbon materials as catalytic tools for oxidative dehydrogenations and couplings in liquid phase
    A Lenarda, T Wirtanen, J Helaja
    Synthesis 55 (01), 45-61 , 2023
    2023
    Citations: 11
  • Simple and Scalable Cathodic Synthesis of 1 H -1-Hydroxyquninolin-4-ons and 4 H -4-Hydroxy-1,2,4-benzothiadiazine-1,1-dioxides
    T Prenzel, T Wirtanen, SR Waldvogel
    Electrochemical Society Meeting Abstracts 241, 1849-1849 , 2022
    2022
  • Tetramethylammonium fluoride: fundamental properties and applications in CF bond-forming reactions and as a base
    V Iashin, T Wirtanen, JE Perea-Buceta
    Catalysts 12 (2), 233 , 2022
    2022
    Citations: 35
  • Carbocatalytic cascade synthesis of polysubstituted quinolines from aldehydes and 2‐vinyl anilines
    MK Mäkelä, E Bulatov, K Malinen, J Talvitie, M Nieger, M Melchionna, ...
    Advanced Synthesis & Catalysis 363 (15), 3775-3782 , 2021
    2021
    Citations: 31
  • Cathodic corrosion of metal electrodes—how to prevent it in electroorganic synthesis
    T Wirtanen, T Prenzel, JP Tessonnier, SR Waldvogel
    Chemical reviews 121 (17), 10241-10270 , 2021
    2021
    Citations: 195

MOST CITED SCHOLAR PUBLICATIONS

  • Cathodic corrosion of metal electrodes—how to prevent it in electroorganic synthesis
    T Wirtanen, T Prenzel, JP Tessonnier, SR Waldvogel
    Chemical reviews 121 (17), 10241-10270 , 2021
    2021
    Citations: 195
  • Recent advances in the electrochemical reduction of substrates involving N− O bonds
    T Wirtanen, E Rodrigo, SR Waldvogel
    Advanced Synthesis & Catalysis 362 (11), 2088-2101 , 2020
    2020
    Citations: 133
  • Cycloisomerization of 2-alkynylanilines to indoles catalyzed by carbon-supported gold nanoparticles and subsequent homocoupling to 3, 3′-biindoles
    JE Perea-Buceta, T Wirtanen, OV Laukkanen, MK Mäkelä, M Nieger, ...
    Angew. Chem. Int. Ed 52, 11835-11839 , 2013
    2013
    Citations: 119
  • Carbocatalysed Oxidative C C Homocouplings of Benzo‐Fused Heterocycles
    T Wirtanen, MK Mäkelä, J Sarfraz, P Ihalainen, S Hietala, M Melchionna, ...
    Advanced Synthesis & Catalysis 357 (16‐17), 3718-3726 , 2015
    2015
    Citations: 58
  • Selective and Scalable Electrosynthesis of 2H ‐2‐(Aryl)‐benzo[ d ]‐1,2,3‐triazoles and Their N‐Oxides by Using Leaded Bronze Cathodes
    T Wirtanen, E Rodrigo, SR Waldvogel
    Chemistry–A European Journal 26 (25), 5592-5597 , 2020
    2020
    Citations: 46
  • Photoreductive Removal of O -Benzyl Groups from Oxyarene N -Heterocycles Assisted by O -Pyridine–pyridone Tautomerism
    AR Todorov, T Wirtanen, J Helaja
    The Journal of Organic Chemistry 82 (24), 13756-13767 , 2017
    2017
    Citations: 45
  • Tetramethylammonium fluoride: fundamental properties and applications in CF bond-forming reactions and as a base
    V Iashin, T Wirtanen, JE Perea-Buceta
    Catalysts 12 (2), 233 , 2022
    2022
    Citations: 35
  • Carbocatalytic cascade synthesis of polysubstituted quinolines from aldehydes and 2‐vinyl anilines
    MK Mäkelä, E Bulatov, K Malinen, J Talvitie, M Nieger, M Melchionna, ...
    Advanced Synthesis & Catalysis 363 (15), 3775-3782 , 2021
    2021
    Citations: 31
  • Intermolecular oxidative dehydrogenative 3, 3′-coupling of benzo [b] furans and benzo [b] thiophenes promoted by DDQ/H+: total synthesis of shandougenine B
    T Wirtanen, M Muuronen, J Hurmalainen, HM Tuononen, M Nieger, ...
    Organic Chemistry Frontiers 3 (12), 1738-1745 , 2016
    2016
    Citations: 31
  • Air oxidized activated carbon catalyst for aerobic oxidative aromatizations of N-heterocycles
    L Enders, DS Casadio, S Aikonen, A Lenarda, T Wirtanen, T Hu, S Hietala, ...
    Catalysis Science & Technology 11 (17), 5962-5972 , 2021
    2021
    Citations: 28
  • Carbon dioxide use and removal: Prospects and policies
    L Kujanpää, A Reznichenko, H Saastamoinen, S Mäkikouri, S Soimakallio, ...
    Prime Minister's Office Finland , 2023
    2023
    Citations: 27
  • Phosphorus-containing lignin intermediates as reactive bio-based flame-retardants for polyurethane and acrylic coatings for wood
    M Puyadena, P Widsten, T Wirtanen, M Kellock, G Ortega, A Mugica, ...
    Industrial Crops and Products 220, 119261 , 2024
    2024
    Citations: 25
  • Direct Electrochemical Synthesis of 2,3‐Disubstituted Quinoline N‐ oxides by Cathodic Reduction of Nitro Arenes
    J Winter, T Prenzel, T Wirtanen, D Schollmeyer, SR Waldvogel
    Chemistry–A European Journal 29 (12), e202203319 , 2023
    2023
    Citations: 21
  • Carbocatalytic Oxidative Dehydrogenative Couplings of (Hetero) Aryls by Oxidized Multi‐Walled Carbon Nanotubes in Liquid Phase
    T Wirtanen, S Aikonen, M Muuronen, M Melchionna, M Kemell, F Davodi, ...
    Chemistry–A European Journal 25 (53), 12288-12293 , 2019
    2019
    Citations: 21
  • Cyclic carbonates as building blocks for non‐isocyanate polyurethanes
    S Kotanen, T Wirtanen, R Mahlberg, A Anghelescu‐Hakala, ...
    Journal of Applied Polymer Science 140 (24), e53964 , 2023
    2023
    Citations: 18
  • Choice of the Right Supporting Electrolyte in Electrochemical Reductions: A Principal Component Analysis
    F Mast, MM Hielscher, T Wirtanen, M Erichsen, J Gauss, G Diezemann, ...
    Journal of the American Chemical Society 146 (22), 15119-15129 , 2024
    2024
    Citations: 16
  • Gold (I)-catalyzed 1, 3-O-transposition of ynones: Mechanism and catalytic acceleration with electron-rich aldehydes
    S Aikonen, M Muuronen, T Wirtanen, S Heikkinen, J Musgreave, J Burés, ...
    ACS catalysis 8 (2), 960-967 , 2018
    2018
    Citations: 16
  • Divergent carbocatalytic routes in oxidative coupling of benzofused heteroaryl dimers: A mechanistic update
    DS Casadio, S Aikonen, A Lenarda, M Nieger, T Hu, S Taubert, ...
    Chemistry–A European Journal 27 (16), 5283-5291 , 2021
    2021
    Citations: 14
  • Gold (III)-Catalyzed Enynamine–Cyclopentadiene Cycloisomerization with Chirality Transfer: An Experimental and Theoretical Study Indicating Involvement of Dual Au (III) Push …
    T Wirtanen, M Muuronen, M Melchionna, M Patzschke, J Helaja
    The Journal of Organic Chemistry 79 (21), 10269-10283 , 2014
    2014
    Citations: 13
  • Carbon materials as catalytic tools for oxidative dehydrogenations and couplings in liquid phase
    A Lenarda, T Wirtanen, J Helaja
    Synthesis 55 (01), 45-61 , 2023
    2023
    Citations: 11