Literatura académica sobre el tema "Α-hydroxyketones"
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Artículos de revistas sobre el tema "Α-hydroxyketones"
Huang, Jinwen, Fanhong Wu, Zhongyuan Li, Zhuang Ni, Ran Sun, Hui Nie, Hui Tang y Lixing Song. "Indium-Mediated Reformatsky Reaction of Iododifluoro Ketones with Aldehydes: Preparation of α,α-Difluoro-β-hydroxyketone Derivatives in Water". SynOpen 06, n.º 01 (enero de 2022): 19–30. http://dx.doi.org/10.1055/s-0040-1719888.
Texto completoKam, Mei Kee, Akira Sugiyama, Ryouta Kawanishi y Kazutaka Shibatomi. "Asymmetric Synthesis of Tertiary α -Hydroxyketones by Enantioselective Decarboxylative Chlorination and Subsequent Nucleophilic Substitution". Molecules 25, n.º 17 (27 de agosto de 2020): 3902. http://dx.doi.org/10.3390/molecules25173902.
Texto completoZheng, Shasha, Wietse Smit, Anke Spannenberg, Sergey Tin y Johannes G. de Vries. "Synthesis of α-keto aldehydes via selective Cu(i)-catalyzed oxidation of α-hydroxy ketones". Chemical Communications 58, n.º 29 (2022): 4639–42. http://dx.doi.org/10.1039/d2cc00773h.
Texto completoNaveen, Naganaboina y Rengarajan Balamurugan. "Catalyst free synthesis of α-fluoro-β-hydroxy ketones/α-fluoro-ynols via electrophilic fluorination of tertiary propargyl alcohols using Selectfluor™ (F-TEDA-BF4)". Organic & Biomolecular Chemistry 15, n.º 9 (2017): 2063–72. http://dx.doi.org/10.1039/c7ob00140a.
Texto completoTanaka, Toru, Masami Kawase y Satoru Tani. "α-Hydroxyketones as inhibitors of urease". Bioorganic & Medicinal Chemistry 12, n.º 2 (enero de 2004): 501–5. http://dx.doi.org/10.1016/j.bmc.2003.10.017.
Texto completoOelerich, Jens y Gerard Roelfes. "Alkylidene malonates and α,β-unsaturated α′-hydroxyketones as practical substrates for vinylogous Friedel–Crafts alkylations in water catalysed by scandium(iii) triflate/SDS". Organic & Biomolecular Chemistry 13, n.º 9 (2015): 2793–99. http://dx.doi.org/10.1039/c4ob02487g.
Texto completoTsukamoto, Takashi, Takashi Yamazaki y Tomoya Kitazume. "Enzymic Optical Resolution of α,α-Difluoro-β-Hydroxyketones". Synthetic Communications 20, n.º 20 (noviembre de 1990): 3181–86. http://dx.doi.org/10.1080/00397919008051543.
Texto completoIseki, Katsuhiko, Daisuke Asada y Yoshichika Kuroki. "Preparation of optically active α,α-difluoro-β-hydroxyketones". Journal of Fluorine Chemistry 97, n.º 1-2 (julio de 1999): 85–89. http://dx.doi.org/10.1016/s0022-1139(99)00033-0.
Texto completoLi, Heng, Nan Liu, Xian Hui y Wen-Yun Gao. "An improved enzymatic method for the preparation of (R)-phenylacetyl carbinol". RSC Advances 7, n.º 52 (2017): 32664–68. http://dx.doi.org/10.1039/c7ra04641c.
Texto completoMuschallik, Lukas, Denise Molinnus, Melanie Jablonski, Carina Ronja Kipp, Johannes Bongaerts, Martina Pohl, Torsten Wagner, Michael J. Schöning, Thorsten Selmer y Petra Siegert. "Synthesis of α-hydroxy ketones and vicinal (R,R)-diols by Bacillus clausii DSM 8716T butanediol dehydrogenase". RSC Advances 10, n.º 21 (2020): 12206–16. http://dx.doi.org/10.1039/d0ra02066d.
Texto completoTesis sobre el tema "Α-hydroxyketones"
Higson, Sally. "Sustainable approaches to the synthesis of aromatic compounds and α-hydroxyketones". Thesis, University College London (University of London), 2017. http://discovery.ucl.ac.uk/10037691/.
Texto completoOcal, Nazim. "Ingénierie de la transcétolase de Geobacillus stearothermophilus : cascade enzymatique pour la synthèse d’alpha-hydroxycétones chirales". Electronic Thesis or Diss., Université Clermont Auvergne (2021-...), 2022. http://www.theses.fr/2022UCFAC047.
Texto completoUnsymmetric chiral α-hydroxyketones highly valuable for their biological properties were obtained with a thermostable transketolase Geobacillus stearothermophilus (TKgst), wild-type or mutated in the presence of different α-ketoacids as donors and aldehydes as acceptors. The first objective was to obtain, by enzymatic way, the most commonly used enzymatic screening-ketoacid as a TK donor, hydroxypyruvate, from D-serine, according to an eco-compatible method compared the usual chemical synthesis. This strategy involves a D-amino acid oxidase (DAAO) which has been coupled to wild-type or mutated TKs in the presence of aliphatic or polyhydroxylated aldehydes. This bienzymatic cascade was performed in a single pot and led to seven chiral α-hydroxyketones with good yields and excellent stereoselectivities. These high value-added compounds can be used for their biological properties in the flavoring, sweetening or medical sectors. In order to optimize the strategy, the production of D-serine was considered from two inexpensive achiral substrates, glycine and formaldehyde, using a D-threonine aldolase. The other objective of this thesis concerned the broadening of the spectrum of TKgst donor substrates by mutagenesis towards new α-ketoacids, in particular functionalized ones, as well as the combination of these new α-ketoacids with polyhydroxylated acceptor aldehydes. A colorimetric test based on the variation of the pH of the reaction medium was developed on a solid medium making it possible to screen the libraries and to visualize the active mutated TKgst according to the color of the clones. Among the donor substrates tested, only aliphatic α-ketoacids and more particularly oxobutyrate lead, in the presence of two new mutated TKgst H102L/H474S/L118I and H102L/L118I, to the highest activity gains compared to wild-type TKgst and to the variants already described. The thermostable H102L/L118I variant was coupled to a thermostable DAAO 4536 in the presence of D-homoalanine, precursor of oxobutyrate and three polyhydroxylated aldehydes, D-erythrose, D-xylose and D-ribose as acceptors. The conversion of D-erythrose was total and faster compared to D-ribose and D-xylose, compounds with longer carbon chains. The three corresponding enzymatic screening-hydroxyketones were obtained with high diastereoisomeric excesses showing that the mutated positions at the TKgst active site have no effect on the catalytic mechanism
Maraite, Andy [Verfasser] y Marion [Akademischer Betreuer] Ansorge-Schumacher. "Identifizierung, Bereitstellung und Charakterisierung von Pseudomonas Lipasen zur kinetischen Racemattrennung von α-Hydroxyketonen / Andy Maraite. Betreuer: Marion Ansorge-Schumacher". Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1014946395/34.
Texto completoNieguth, René [Verfasser] y Reinhard [Akademischer Betreuer] Schomäcker. "Entwicklung einer robusten chemo-enzymatisch dynamisch kinetischen Racematspaltung für die nachhaltige Synthese chiraler α-Hydroxyketone / René Nieguth. Betreuer: Reinhard Schomäcker". Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2013. http://d-nb.info/1033640417/34.
Texto completoHornung, Claudia Katharina [Verfasser] y Wolfgang [Akademischer Betreuer] Streit. "Violacein-producing Janthinobacterium sp. HH01 : Genome analysis revealed a novel α-hydroxyketone-sensing reporter-strain / Claudia Katharina Hornung. Betreuer: Wolfgang Streit". Hamburg : Staats- und Universitätsbibliothek Hamburg, 2013. http://d-nb.info/1042753822/34.
Texto completoPetrenz-Beck, Annika Verfasser], Marion B. [Gutachter] Ansorge-Schumacher y Ulf [Gutachter] [Hanefeld. "Heterogene chemo-enzymatische dynamisch kinetische Racematspaltung symmetrischer und asymmetrischer α-Hydroxyketone / Annika Petrenz-Beck ; Gutachter: Marion B. Ansorge-Schumacher, Ulf Hanefeld". Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://d-nb.info/1226813216/34.
Texto completoBieler, Nora Christiane [Verfasser] y Marion [Akademischer Betreuer] Ansorge-Schumacher. "Präparation spezieller Biokatalysatoren für die chemisch-technische Nutzung zur Bereitstellung von Aromaten und chiralen α-Hydroxyketonen / Nora Christiane Bieler. Betreuer: Marion Ansorge-Schumacher". Berlin : Universitätsbibliothek der Technischen Universität Berlin, 2011. http://d-nb.info/1014827612/34.
Texto completoHaack, Frederike Svenja [Verfasser] y Wolfgang [Akademischer Betreuer] Streit. "Genome, mutational and RNA-seq analyses of Janthinobacterium and Duganella strains reveal the presence of a single α-hydroxyketone-like quorum sensing system involved in bacterial-fungal interactions / Frederike Svenja Haack ; Betreuer: Wolfgang Streit". Hamburg : Staats- und Universitätsbibliothek Hamburg, 2017. http://d-nb.info/1124155376/34.
Texto completoHaack, Frederike Svenja [Verfasser] y Wolfgang [Akademischer Betreuer] Streit. "Genome, mutational and RNA-seq analyses of Janthinobacterium and Duganella strains reveal the presence of a single α-hydroxyketone-like quorum sensing system involved in bacterial-fungal interactions / Frederike Svenja Haack ; Betreuer: Wolfgang Streit". Hamburg : Staats- und Universitätsbibliothek Hamburg, 2016. http://d-nb.info/1120015073/34.
Texto completoHuang, Pei-Wen y 黃姵文. "Hypervalent Iodine(III) Reagent Mediated Synthesis of Dienones, α, β-unsaturated Weinreb amides and α-Hydroxyketones". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/q22j6m.
Texto completo高雄醫學大學
藥學研究所
91
In recent years, hypervalent iodine reagents have attracted much attention as useful synthetic reagents. These hypervalent iodine reagents have been extensively used inorganic synthesis due to their low toxicity and easy handling. In the family of hypervalent iodine compounds, phenyl iodine(III) diacetate(PIDA), phenyliodine (III) bis(trifluoroacetate) (PIFA) and [hydroxy(tosyloxy)iodo]benzene (HTIB) are the most frequently used and easily available reagents. In this work, PIDA, PIFA, and HTIB will be applied to prepared dienones, α,β-unsatured Weinreb amides and α-hydroxyketones.
Capítulos de libros sobre el tema "Α-hydroxyketones"
Calvert, Jack, Abdelwahid Mellouki, John Orlando, Michael Pilling y Timothy Wallington. "Rate Coefficients and Mechanisms for the Atmospheric Oxidation of the Ketones". En Mechanisms of Atmospheric Oxidation of the Oxygenates. Oxford University Press, 2011. http://dx.doi.org/10.1093/oso/9780199767076.003.0008.
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