Zobrazeno 1 - 10 of 194 pro vyhledávání: '"Ron Wever"'
1
Chemoenzymatic Hunsdiecker-Type Decarboxylative Bromination of Cinnamic Acids
Autor: Huanhuan Li, Sabry H. H. Younes, Shaohang Chen, Peigao Duan, Chengsen Cui, Ron Wever, Wuyuan Zhang, Frank Hollmann
Publikováno v: ACS Catalysis, 12(8), 4554-4559. American Chemical Society
ACS Catalysis, 12(8)
In this contribution, we report chemoenzymatic bromodecarboxylation (Hunsdiecker-type) of α,ß-unsaturated carboxylic acids. The extraordinarily robust chloroperoxidase from Curvularia inaequalis (CiVCPO) generated hypobromite from H2O2and bromide,
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08c83594e38d413921d595fcc25ff141
https://hdl.handle.net/11245.1/835557c5-c74d-45c4-8a4a-51c57e9a4a43
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2
Sulfated phenolic acids in plants
Autor: Klara Supikova, Andrea Kosinova, Martin Vavrusa, Lucie Koplikova, Anja François, Jiri Pospisil, Marek Zatloukal, Ron Wever, Aloysius Hartog, Jiri Gruz
Publikováno v: Planta, 255(6):124. Springer Verlag
The untargeted UHPLC-QTOF-MS metabolomics of more than 50 samples from plant, fungi and algae lead to the discovery of a small group of sulfated metabolites derived from phenolic acids. These compounds were detected in land plants for the first time.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::57d3a1a7299e00e76692ea5818ee23c8
https://dare.uva.nl/personal/pure/en/publications/sulfated-phenolic-acids-in-plants(4076fa0c-2403-4747-9809-05563ae76d10).html
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3
Chemoenzymatic Halocyclization of γ,δ‐Unsaturated Carboxylic Acids and Alcohols
Autor: Sabry H. H. Younes, Florian Tieves, Dongming Lan, Yonghua Wang, Philipp Süss, Henrike Brundiek, Ron Wever, Frank Hollmann
Publikováno v: Chemsuschem
ChemSusChem, 13(1), 97-101. Wiley-VCH Verlag
ChemSusChem (Print): chemistry & sustainability, energy & materials, 13(1)
ChemSusChem
A chemoenzymatic method for the halocyclization of unsaturated alcohols and acids by using the robust V‐dependent chloroperoxidase from Curvularia inaequalis (CiVCPO) as catalyst has been developed for the in situ generation of hypohalites. A broad
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7cce2287cd8689dfbc64ef282896783e
https://dare.uva.nl/personal/pure/en/publications/chemoenzymatic-halocyclization-of-unsaturated-carboxylic-acids-and-alcohols(06f1f2be-d525-46f6-bccc-214c74b7b775).html
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4
Water-Soluble Anthraquinone Photocatalysts Enable Methanol-Driven Enzymatic Halogenation and Hydroxylation Reactions
Autor: Frank Hollmann, Qiang Fei, Ron Wever, Bo Yuan, Miguel Alcalde, Wuyuan Zhang, Durga Mahor
Publikováno v: ACS Catalysis, 10(15), 8277-8284. American Chemical Society
ACS Catalysis
ACS Catalysis, 10(15)
Peroxyzymes simply use H2O2 as a cosubstrate to oxidize a broad range of inert C-H bonds. The lability of many peroxyzymes against H2O2 can be addressed by a controlled supply of H2O2, ideally in situ. Here, we report a simple, robust, and water-solu
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84b65919dbd41efaca42cfacf8352587
http://resolver.tudelft.nl/uuid:090bb7ff-12f1-4fc6-b4ed-9208147f6e7b
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5
Chemoenzymatic Halocyclization of 4-Pentenoic Acid at Preparative Scale
Autor: Sabry H. H. Younes, Georg T. Höfler, Caroline E. Paul, Frank Hollmann, Andrada But, Isabel W. C. E. Arends, Ron Wever
Publikováno v: ACS Sustainable Chemistry and Engineering, 8(7)
ACS Sustainable Chemistry & Engineering
ACS Sustainable Chemistry & Engineering, 8(7), 2602-2607. American Chemical Society
The scale-up of chemoenzymatic bromolactonization to 100 g scale is presented, together with an identification of current limitations. The preparative-scale reaction also allowed for meaningful mass balances identifying current bottlenecks of the che
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a714cd87009d550ac8ca06fd9c76ce08
http://resolver.tudelft.nl/uuid:6f587aa9-4786-4746-8835-77ef0d591715
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6
Chemoenzymatic Halocyclization of γ,δ-Unsaturated Carboxylic Acids and Alcohols
Autor: Florian Tieves, Lan Dongming, Yonghua Wang, Sabry H. H. Younes, Philipp Süss, Frank Hollmann, Henrike Brundiek, Ron Wever
Publikováno v: ChemSusChem. 13(1)
Invited for this month's cover is the group of Prof. Dr. Frank Hollmann at Delft University of Technology in the Netherlands. The Front Cover shows the vanadium-dependent haloperoxidase from the marine organism Curcuvaria inaequalis, which efficientl
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::858e943ecc4018bbfd2467335621752d
https://pubmed.ncbi.nlm.nih.gov/31886621
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7
Dissolving Lignin in Water through Enzymatic Sulfation with Aryl Sulfotransferase
Autor: Gadi Rothenberg, Ron Wever, Aloysius F. Hartog, Pepijn Prinsen, Anand Narani
Publikováno v: ChemSusChem, 10(10), 2267-2273. Wiley-VCH Verlag
We introduce the concept of using site-specific sulfation of various lignins for increasing their aqueous solubility and thereby their processability. Using p-nitrophenylsulfate as a sulfate source and an aryl sulfotransferase enzyme as catalyst, lig
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a00cbfd5745b8f7fefb19b54f9d3e9da
https://doi.org/10.1002/cssc.201700376
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8
Unusual differences in the reactivity of glutamic and aspartic acid in oxidative decarboxylation reactions
Autor: Johan P.M. Sanders, Johannes H. Bitter, Andrada But, Ron Wever, Jérôme Le Nôtre, Evie van der Wijst, Elinor L. Scott
Publikováno v: Green Chemistry 19 (2017) 21
Green Chemistry, 19(21), 5178-5186
Amino acids are potential substrates to replace fossil feedstocks for the synthesis of nitriles via oxidative decarboxylation using vanadium chloroperoxidase (VCPO), H2O2 and bromide. Here the conversion of glutamic acid (Glu) and aspartic acid (Asp)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2213bff88a8024ed1fac907b674d2b3
https://doi.org/10.1039/c7gc02137b
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9
Vanadium Chloroperoxidases: The Missing Link in the Formation of Chlorinated Compounds and Chloroform in the Terrestrial Environment?
Autor: Phil Barnett, Ron Wever
Publikováno v: Chemistry, an Asian journal. 12(16):1997-2007
It is well established that the majority of chlorinated organic substances found in the terrestrial environment are produced naturally. The presence of these compounds in soils is not limited to a single ecosystem. Natural chlorination is also a wide
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::389016465a0fef6b3af0405750732134
https://doi.org/10.1002/asia.201700420
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10
Sulfation made easy: A new versatile donor for enzymatic sulfation by a bacterial arylsulfotransferase
Autor: Aloysius F. Hartog, Ron Wever
Publikováno v: Journal of Molecular Catalysis B: Enzymatic. 129:43-46
An efficient and versatile donor for the sulfation by a bacterial arylsulfotransferase of various phenolic acceptor molecules is reported. Most studies in the past used toxic p -nitrophenyl sulfate as a sulfate donor for sulfation by this enzyme. How
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::662c1e7d8c6953ac69a7dc5026cdbab9
https://doi.org/10.1016/j.molcatb.2016.04.007
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