Suchergebnisse - "de Vries, Johannes G"

Caprolactam from Renewable Resources: Catalytic Conversion of 5-Hydroxymethylfurfural into Caprolactone von Buntara, Teddy, Noel, Sebastien, Phua, Pim Huat, Melián-Cabrera, Ignacio, de Vries, Johannes G., Heeres, Hero J.

“… Renewable nylon: 5‐Hydroxymethylfurfural (HMF), which can be obtained from renewable resources such as D‐fructose, was converted into caprolactone with very …”
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Advanced Model Compounds for Understanding Acid-Catalyzed Lignin Depolymerization: Identification of Renewable Aromatics and a Lignin-Derived Solvent von Lahive, Ciaran W., Deuss, Peter J., Lancefield, Christopher S., Sun, Zhuohua, Cordes, David B., Young, Claire M., Tran, Fanny, Slawin, Alexandra M. Z., de Vries, Johannes G., Kamer, Paul C. J., Westwood, Nicholas J., Barta, Katalin

“… The development of fundamentally new approaches for lignin depolymerization is challenged by the complexity of this aromatic biopolymer. While overly …”
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Properties of Novel Polyesters Made from Renewable 1,4‐Pentanediol von Stadler, Bernhard M., Brandt, Adrian, Kux, Alexander, Beck, Horst, Vries, Johannes G.

“… Novel polyester polyols were prepared in high yields from biobased 1,4‐pentanediol catalyzed by non‐toxic phosphoric acid without using a solvent. These …”
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Improvement in the Palladium-Catalyzed Miyaura Borylation Reaction by Optimization of the Base: Scope and Mechanistic Study von Barroso, Santiago, Joksch, Markus, Puylaert, Pim, Tin, Sergey, Bell, Stephen J, Donnellan, Luke, Duguid, Stewart, Muir, Colin, Zhao, Peichao, Farina, Vittorio, Tran, Duc N, de Vries, Johannes G

“… Aryl boronic acids and esters are important building blocks in API synthesis. The palladium-catalyzed Suzuki-Miyaura borylation is the most common method for …”
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Cyclopentanone Derivatives from 5‐Hydroxymethylfurfural via 1‐Hydroxyhexane‐2,5‐dione as Intermediate von Wozniak, Bartosz, Spannenberg, Anke, Li, Yuehui, Hinze, Sandra, de Vries, Johannes G.

“… An efficient strategy for the conversion of biomass derived 5‐hydroxymethylfurfural (HMF) into 2‐hydroxy‐3‐methylcyclopent‐2‐enone (MCP) by an intramolecular …”
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Nylon Intermediates from Bio‐Based Levulinic Acid von Marckwordt, Annemarie, El Ouahabi, Fatima, Amani, Hadis, Tin, Sergey, Kalevaru, Narayana V., Kamer, Paul C. J., Wohlrab, Sebastian, de Vries, Johannes G.

“… Use of ZrO2/SiO2 as a solid acid catalyst in the ring‐opening of biobased γ‐valerolactone with methanol in the gas phase leads to mixtures of methyl 2‐, 3‐, …”
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Hydrogenation of Polyesters to Polyether Polyols von Stadler, Bernhard M., Hinze, Sandra, Tin, Sergey, Vries, Johannes G.

“… The amount of plastic waste is continuously increasing. Besides conventional recycling, one solution to deal with this problem could be to use this waste as a …”
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A Metal-Ligand Cooperative Pathway for Intermolecular Oxa-Michael Additions to Unsaturated Nitriles von Perdriau, Sébastien, Zijlstra, Douwe S., Heeres, Hero J., de Vries, Johannes G., Otten, Edwin

“… An unprecedented catalytic pathway for oxa‐Michael addition reactions of alcohols to unsaturated nitriles has been revealed using a PNN pincer ruthenium …”
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Palladium-Catalyzed Asymmetric Quaternary Stereocenter Formation von Gottumukkala, Aditya L., Matcha, Kiran, Lutz, Martin, de Vries , Johannes G., Minnaard, Adriaan J.

“… An efficient palladium catalyst is presented for the formation of benzylic quaternary stereocenters by conjugate addition of arylboronic acids to a variety of …”
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Asymmetric Hydrogenation of 3-Substituted Pyridinium Salts von Renom-Carrasco, Marc, Gajewski, Piotr, Pignataro, Luca, de Vries, Johannes G., Piarulli, Umberto, Gennari, Cesare, Lefort, Laurent

“… The use of an equivalent amount of an organic base leads to high enantiomeric excess in the asymmetric hydrogenation of N‐benzylated 3‐substituted pyridinium …”
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Hydration of nitriles using a metal-ligand cooperative ruthenium pincer catalyst von Guo, Beibei, de Vries, Johannes G, Otten, Edwin

“… Nitrile hydration provides access to amides that are important structural elements in organic chemistry. Here we report catalytic nitrile hydration using …”
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Ruthenacycles and Iridacycles as Transfer Hydrogenation Catalysts von Ritleng, Vincent, de Vries, Johannes G.

“… In this review, we describe the synthesis and use in hydrogen transfer reactions of ruthenacycles and iridacycles. The review limits itself to metallacycles …”
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Hydroxymethylfurfural, a versatile platform chemical made from renewable resources von van Putten, Robert-Jan, van der Waal, Jan C, de Jong, Ed, Rasrendra, Carolus B, Heeres, Hero J, de Vries, Johannes G

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Aromatic Monomers by in Situ Conversion of Reactive Intermediates in the Acid-Catalyzed Depolymerization of Lignin von Deuss, Peter J., Scott, Martin, Tran, Fanny, Westwood, Nicholas J., de Vries, Johannes G., Barta, Katalin

“… Conversion of lignin into well-defined aromatic chemicals is a highly attractive goal but is often hampered by recondensation of the formed fragments, …”
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Asymmetric Hydrogenation of Quinoxalines Catalyzed by Iridium/PipPhos von Mršić, Nataša, Jerphagnon, Thomas, Minnaard, Adriaan J., Feringa, Ben L., de Vries, Johannes G.

“… A catalyst made in situ from the (cyclooctadiene)iridium chloride dimer, [Ir(COD)Cl]2, and the monodentate phosphoramidite ligand (S)‐PipPhos was used in the …”
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Asymmetric Hydrogenation of Quinolines Catalyzed by Iridium Complexes of Monodentate BINOL-Derived Phosphoramidites von Mršić, Nataša, Lefort, Laurent, Boogers, Jeroen A. F., Minnaard, Adriaan J., Feringa, Ben L., de Vries, Johannes G.

“… The monodentate BINOL‐derived phosphoramidite PipPhos is used as ligand for the iridium‐catalyzed asymmetric hydrogenation of 2‐ and 2,6‐substituted …”
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Base‐Free Iron Catalyzed Transfer Hydrogenation of Esters Using EtOH as Hydrogen Source von Farrar‐Tobar, Ronald A., Wozniak, Bartosz, Savini, Arianna, Hinze, Sandra, Tin, Sergey, de Vries, Johannes G.

“… Herein, we report on the use of the iron pincer complex Iron‐MACHO‐BH, in the base‐free transfer hydrogenation of esters with EtOH as a hydrogen source. More …”
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Benzenoid Aromatics from Renewable Resources von Zheng, Shasha, Zhang, Zhenlei, He, Songbo, Yang, Huaizhou, Atia, Hanan, Abdel-Mageed, Ali M, Wohlrab, Sebastian, Baráth, Eszter, Tin, Sergey, Heeres, Hero J, Deuss, Peter J, de Vries, Johannes G

“… In this Review, all known chemical methods for the conversion of renewable resources into benzenoid aromatics are summarized. The raw materials that were taken …”
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Assisted Tandem Catalysis: Metathesis Followed by Asymmetric Hydrogenation from a Single Ruthenium Source von Renom-Carrasco, Marc, Gajewski, Piotr, Pignataro, Luca, de Vries, Johannes G., Piarulli, Umberto, Gennari, Cesare, Lefort, Laurent

“… Here we report the first example of a tandem metathesis–asymmetric hydrogenation protocol where the prochiral olefin generated by metathesis is hydrogenated …”
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The mechanism of the modified Ullmann reaction von Sperotto, Elena, van Klink, Gerard P M, van Koten, Gerard, de Vries, Johannes G

“… The copper-mediated aromatic nucleophilic substitution reactions developed by Fritz Ullmann and Irma Goldberg required stoichiometric amounts of copper and …”
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