Academic literature on the topic 'Hydroxylation'
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Journal articles on the topic "Hydroxylation"
Hilinski, Michael, Shea Johnson, and Logan Combee. "Organocatalytic Atom-Transfer C(sp3)–H Oxidation." Synlett 29, no. 18 (June 27, 2018): 2331–36. http://dx.doi.org/10.1055/s-0037-1610432.
Full textHolland, Herbert L., Frances M. Brown, P. Chinna Chenchaiah, and J. Appa Rao. "Hydroxylation of prostanoids by fungi. Synthesis of (−)-15-deoxy-19-(R)-hydroxy-PGE1 and (−)-15-deoxy-18-(S)-hydroxy-PGE1." Canadian Journal of Chemistry 68, no. 2 (February 1, 1990): 282–93. http://dx.doi.org/10.1139/v90-039.
Full textMasferrer-Rius, Eduard, Raoul M. Hopman, Jishai van der Kleij, Martin Lutz, and Robertus J. M. Klein Gebbink. "On the Ability of Nickel Complexes Derived from Tripodal Aminopyridine Ligands to Catalyze Arene Hydroxylations." CHIMIA International Journal for Chemistry 74, no. 6 (June 24, 2020): 489–94. http://dx.doi.org/10.2533/chimia.2020.489.
Full textDoostzadeh, J., and R. Morfin. "Effects of cytochrome P450 inhibitors and of steroid hormones on the formation of 7-hydroxylated metabolites of pregnenolone in mouse brain microsomes." Journal of Endocrinology 155, no. 2 (November 1, 1997): 343–50. http://dx.doi.org/10.1677/joe.0.1550343.
Full textAdams, J. S., and M. A. Gacad. "Characterization of 1 alpha-hydroxylation of vitamin D3 sterols by cultured alveolar macrophages from patients with sarcoidosis." Journal of Experimental Medicine 161, no. 4 (April 1, 1985): 755–65. http://dx.doi.org/10.1084/jem.161.4.755.
Full textDahlbäck, H., and K. Wikvall. "25-Hydroxylation of vitamin D3 by a cytochrome P-450 from rabbit liver mitochondria." Biochemical Journal 252, no. 1 (May 15, 1988): 207–13. http://dx.doi.org/10.1042/bj2520207.
Full textRamirez, Leyla C., and Bernard F. Maume. "Regulation of 11β/18-steroid hydroxylation in newborn rat adrenal cells in primary culture." Acta Endocrinologica 111, no. 1 (January 1986): 106–15. http://dx.doi.org/10.1530/acta.0.1110106.
Full textVeronese, M. E., C. J. Doecke, P. I. Mackenzie, M. E. McManus, J. O. Miners, D. L. Rees, R. Gasser, U. A. Meyer, and D. J. Birkett. "Site-directed mutation studies of human liver cytochrome P-450 isoenzymes in the CYP2C subfamily." Biochemical Journal 289, no. 2 (January 15, 1993): 533–38. http://dx.doi.org/10.1042/bj2890533.
Full textAxén, E., T. Bergman, and K. Wikvall. "Purification and characterization of a vitamin D3 25-hydroxylase from pig liver microsomes." Biochemical Journal 287, no. 3 (November 1, 1992): 725–31. http://dx.doi.org/10.1042/bj2870725.
Full textWebb, James D., Andrea Murányi, Christopher W. Pugh, Peter J. Ratcliffe, and Mathew L. Coleman. "MYPT1, the targeting subunit of smooth-muscle myosin phosphatase, is a substrate for the asparaginyl hydroxylase factor inhibiting hypoxia-inducible factor (FIH)." Biochemical Journal 420, no. 2 (May 13, 2009): 327–36. http://dx.doi.org/10.1042/bj20081905.
Full textDissertations / Theses on the topic "Hydroxylation"
Tang, Campbell. "Microbial hydroxylation of the morphinans." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614764.
Full textDjaneye-Boundjou, Gbandi. "Hydroxylation catalytique de composés aromatiques." Poitiers, 1989. http://www.theses.fr/1989POIT2324.
Full textRautenbach, Daniel. "The electrochemical hydroxylation of aromatic substrates." Thesis, Port Elizabeth Technikon, 2002. http://hdl.handle.net/10948/94.
Full textGqogqa, Pumeza. "Hydroxylation of aromatic compounds over zeolites." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2564.
Full textAromatic precursor compounds are derivatives that play an important role in biosystems and are useful in the production of fine chemicals. This work focuses on the catalytic synthesis of 2-methyl-1, 4-naphthoquinone and cresols (para- and ortho) using aqueous hydrogen peroxide as an oxidant in liquidphase oxidation of 2-methylnaphthalene and toluene over titanium-substituted zeolite TS-1 or Ti-MCM-41. Catalysts synthesised in this work were calcined at 550°C, extensively characterised using techniques such as X-ray Fluorescence for determining the catalyst chemical composition; BET for surface area, pore size and micropore volume; Powder X-ray diffraction for determining their crystallinity and phase purity and SEM was used to investigate the catalyst morphologies. The BET surface areas for Ti-MCM-41 showed a surface area of 1025 m2/g, and a 0.575 cm3/g micropore volume. However, zeolite TS-1 showed a BET surface area of 439 m2/g and a 0.174 cm3/g micropore volume. The initial experiments on 2-methylnaphthalene hydroxylation were performed using the normal batch method. After a series of batch runs, without any success as no products were generated as confirmed by GC, a second experimental tool was proposed. This technique made use of the reflux system at reaction conditions similar to that of the batch system. After performing several experimental runs and optimising the system to various reactor operating conditions and without any products formed, the thought of continuing using the reflux was put on hold. Due to this, a third procedure was brought into perspective. This process made use of PTFE lined Parr autoclave. The reactor operating conditions were changed in order to suit the specifications and requirements of the autoclave. This process yielded promising results and the formation of 2-MNQ was realised. There was a drawback when using an autoclave as only one data point was obtained, at the end of each run. Therefore, it was not possible to investigate reaction kinetics in terms of time. Addition of aqueous hydrogen peroxide (30 wt-%) solution in the feed was done in one lot at the beginning of each reaction in all oxidation reactions, to a reactor containing 2-methylnaphthalene and the catalyst in an appropriate solvent of choice (methanol, acetonitrile, 2-propanol, 1-propanol, 1-pentanol, and butanol), with sample withdrawal done over a period of 6 hours (excluding catalytic experiments done with a Parr autoclave as sampling was impossible). As expected, 2-methylnaphthalene oxidation reactions with medium pore zeolite TS-1 yielded no formation of 2-methyl-1, 4-naphthoquinone using various types of solvents, with a batch reactor, reflux system, or a Parr PTFE autoclave. This was attributed to the fact that 2-methylnaphthalene is a large compound and hinders diffusion into zeolite channels. With the use of an autoclave, Ti-MCM-41 catalysed reactions showed that the choice of a solvent and reaction temperature strongly affect 2- methylnaphthalene conversion and product selectivity. This was proven after comparing a series of different solvents (such as methanol, isopropanol, npropanol, isobutanol, n-pentanol and acetonitrile) at different temperatures. Only reactions using acetonitrile as a solvent showed 2-MNQ. Formation of 2- MNQ, indicating that acetonitrile is an appropriate choice of solvent for this system. The highest 2-methylnaphthalene conversion (92%) was achieved at 120 ˚C, with a relative product selectivity of 51.4 %. Temperature showed a major effect on 2-MN conversion as at lower reaction temperature 100˚C, the relative product selectivity (72%) seems to enhance; however, the drawback is the fact that lower 2-methylnaphthalene conversions (18%) are attained. Another important point to note is the fact that using an autoclave (with acetonitrile as a solvent), 2-methyl-1-naphthol was generated as a co-product. In conclusion, it has been shown that the hydroxylation of different aromatic compounds over zeolites conducted in this study generated interesting findings. In 2-MN hydroxylation over Ti-MCM-41 as a catalyst, only acetonitrile is an appropriate choice of solvent using an autoclave. In addition, zeolite TS-1 is not a suitable catalyst for 2-MN hydroxylation reactions. It is ideal to optimise an autoclave in order to investigate reaction kinetics and optimum selectivity. Toluene hydroxylation reactions yielded para and ortho-cresol as expected with either water or acetonitrile as a solvent. No meta-cresol was formed. The kinetic model fitted generated a good fit with water as a solvent or excess toluene, with acetonitrile as a solvent generating a reasonable fit.
Deng, Yifan. "Flavin-dependent hydroxylation of aromatic compounds." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS601.
Full textThe growing global market of industrial enzymes is estimated to attain 17 billion USD in 2025. The strong demand and many advantages such as high efficiency, low cost, environmentally friendly procedures draw more attention to its use. Besides the regular utilization, specialty enzymes including biocatalysts are quickly developing due to the demand in pharmaceutics, research & biotechnology, and diagnostics. The objective of this project is to realize an in vitro system which can catalyze an aromatic hydroxylation reaction. This project is divided into two parts. After an introduction, the details of system establishment will be described, followed by a study on biochemical properties. In order to achieve a higher yield on high added value products, activity on non-natural substrates needs to be enhanced. A crystallography-structure-mutagenesis approach is applied, based on the model structure of the enzyme, chosen residues are mutated into specific amino acids and activity of these mutants is tested on non-substrates. Considering hydroxylation is a redox reaction, cofactors are needed. For an in vitro system, in order to lower production cost by avoiding using high price reduced cofactors, a regeneration system will be introduced. The enzymatic regeneration system currently used in industrial production is still considered to be an efficient method. Nevertheless, new methods such as electrochemical regeneration, organometallic complexes catalyzed regeneration show a comparable activity to the aforementioned enzymatic regeneration system. With the goal of facilitating catalyst recycling, a catalyst heterogenization process is applied. Immobilization of a Rh based organometallic complex on Bipyridine-Periodic Mesoporous Organosilica (Bpy-PMO) is investigated as an example. This heterogeneous catalyst shows relatively interesting cofactors regeneration activity and recyclability
Bhowmick, Rupa. "Transition metal-ion mediated hydroxylation reactions." Thesis, University of North Bengal, 1993. http://hdl.handle.net/123456789/867.
Full textFedkenheuer, Michael Gerald. "Structural and Mutational Analyses of Aspergillus fumigatus SidA: A Flavin-Dependent N-hydroxylating Enzyme." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76837.
Full textMaster of Science in Life Sciences
Frémy, Nicolas. "Etude des premiers stades d'oxydation de NiA1(001) : croissance d'un film ultra-mince d'alumine et réactivité à la vapeur d'eau de l'oxyde formé." Paris 6, 2004. http://www.theses.fr/2004PA066455.
Full textKarabacak, Elife Ozlem. "Aspergillus Niger Mediated A-hydroxylation Of Cyclic Ketones." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/3/12608088/index.pdf.
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-oxidation of ketones (1-indanone, 1-tetralone) was studied. The &
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-oxidation of ketones was carried out by using whole cells of Aspergillus niger in different growth media. A. niger whole cell catalyzed reactions afforded (S)-configurated 2- hydroxy-1-tetralone with %87 e.e. in DMSO at pH 5.0. In addition to this,while (S)-configurated 2-hydroxy-1-indanone with %33 e.e. in pH 8.0 (in DMSO) was synthesized, (R)-configurated-2-hyroxy-1-indanone with %32 e.e. in pH 7.0 ( in DMSO) was synthesized.
Kim, Namhoon. "Epoxidation and di-hydroxylation of camelina sativa oil." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18252.
Full textDepartment of Grain Science and Industry
Xiuzhi Susan Sun
Plant oil-based raw materials have become more attractive alternatives in polymer industry as fossil resources depletion and environmental concerns continue to arise. Camelina (camelina sativa L.) seed contains about 45% of oil and about 90% of the oil is unsaturated fatty acids such as linoleic acid, α-linolenic acid, and erucic acids. It also provides the advantages of low cost and low fertilizer demand. Functionalized oils such as epoxidized camelina oil (ECO) and di-hydroxyl camelina oil (DCO) can be used for resins, adhesives, coatings, etc. The objectives of this work were to synthesize and characterize ECO and DCO from camelina oil. The epoxidation reaction of camelina oil was completed with formic acid and hydrogen peroxide. Catalyst ratio, reaction time, and temperature effects on the epoxidation reaction were studied. The optimum epoxy content of 7.52 wt% with a conversion rate of 76.34% was obtained from camelina oil using excess hydrogen peroxide and a molar ratio of formic acid of less than 1 for 5 hours in 50 °C. Camelina oil yields higher epoxy content (7.52 wt%) than soybean oil (6.53 wt%); however, soybean oil had a higher conversion rate of 80.16% compared to camelina oil because of uniform fatty acids distribution. In this study, we found that epoxidation efficiency is significantly affected by fatty acids composition, structure, and distribution. DCO was synthesized from ECO with different reaction parameters. The ring opening of ECO was performed with water, perchloric acid, and THF as proton donor, catalyst, and solvent respectively. Hydroxyl value of DCO was measured, and the maximal hydroxyl value was 369.24 mg KOH/g. physical properties of DCO were characterized by acid value and moisture content; thermal properties of DCO were obtained using different scanning calorimeter (DSC), thermalgravimetric analysis (TGA). Amount of solvent and acid catalyst addition affected the hydroxyl value and residual acid in DCO. Heat capacity, phase transition temperatures, and thermal stability of DCO were obtained and showed higher values than ECO’s. The DCO showed higher peel adhesion when it was formulated with epoxidized soybean oils through UV curing because camelina oil allows higher epoxy content, which results in higher hydroxyl values.
Books on the topic "Hydroxylation"
Yoshizawa, Kazunari, ed. Direct Hydroxylation of Methane. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9.
Full textCooke, Robert Grahame *. Hydroxylation of tricyclic antidepressants in vivo clinical importance. 1988.
Find full textElshafei, Harbi Abdallah Ibrahim. Removal of light hydrocarbons in the preparation of ultra-pure ¹⁴CO tracer for measuring hydroxyl radicals in the atmosphere. 1987.
Find full textYoshizawa, Kazunari. Direct Hydroxylation of Methane: Interplay Between Theory and Experiment. Springer Singapore Pte. Limited, 2021.
Find full textYoshizawa, Kazunari. Direct Hydroxylation of Methane: Interplay Between Theory and Experiment. Springer Singapore Pte. Limited, 2020.
Find full textSchofield, Christopher, Martin J. Bollinger, Carsten Krebs, Robert Hausinger, and C. David Garner. 2-Oxoglutarate-Dependent Oxygenases. Royal Society of Chemistry, The, 2015.
Find full textBollinger, J. Martin, Christopher Schofield, Robert Hausinger, and C. David Garner. 2-Oxoglutarate-Dependent Oxygenases. Royal Society of Chemistry, The, 2015.
Find full textAndersson, Inger, Robert P. Hausinger, Robert Hausinger, Graham Moran, and Tina Muller. 2-Oxoglutarate-Dependent Oxygenases. Royal Society of Chemistry, The, 2015.
Find full textThe caffeine 8-hydroxylation in humans: A predominantly intestinal phenomenn. Ottawa: National Library of Canada, 2001.
Find full textShaik, Sason, Samuel P. de Visser, Devesh Kumar, Andrew W. Munro, and Saptaswa Sen. Iron-Containing Enzymes: Versatile Catalysts of Hydroxylation Reactions in Nature. Royal Society of Chemistry, The, 2011.
Find full textBook chapters on the topic "Hydroxylation"
Yoshizawa, Kazunari, and Mayuko Miyanishi. "Orbital Concept for Methane Activation." In Direct Hydroxylation of Methane, 1–22. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_1.
Full textShiota, Yoshihito, and Kazunari Yoshizawa. "Theoretical Study of the Direct Conversion of Methane by First-Row Transition-Metal Oxide Cations in the Gas Phase." In Direct Hydroxylation of Methane, 23–44. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_2.
Full textYumura, Takashi, Takehiro Ohta, and Kazunari Yoshizawa. "Enzymatic Methane Hydroxylation: sMMO and pMMO." In Direct Hydroxylation of Methane, 45–73. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_3.
Full textMahyuddin, Muhammad Haris, Hermawan Kresno Dipojono, and Kazunari Yoshizawa. "Mechanistic Understanding of Methane Hydroxylation by Cu-Exchanged Zeolites." In Direct Hydroxylation of Methane, 75–86. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_4.
Full textMahyuddin, Muhammad Haris. "Oxidative Activation of Metal-Exchanged Zeolite Catalysts for Methane Hydroxylation." In Direct Hydroxylation of Methane, 87–100. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_5.
Full textTsuji, Yuta, Masashi Saito, and Kazunari Yoshizawa. "Dynamics and Energetics of Methane on the Surfaces of Transition Metal Oxides." In Direct Hydroxylation of Methane, 101–33. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_6.
Full textToyao, Takashi, Ichigaku Takigawa, and Ken-ichi Shimizu. "Machine Learning Predictions of Adsorption Energies of CH4-Related Species." In Direct Hydroxylation of Methane, 135–49. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_7.
Full textHori, Yuta, and Tsukasa Abe. "Theoretical Approach to Homogeneous Catalyst of Methane Hydroxylation: Collaboration with Computation and Experiment." In Direct Hydroxylation of Methane, 151–65. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6986-9_8.
Full textHolland, Herbert L. "Hydroxylation and Dihydroxylation." In Biotechnology, 475–533. Weinheim, Germany: Wiley-VCH Verlag GmbH, 2008. http://dx.doi.org/10.1002/9783527620906.ch10.
Full textLi, Jie Jack. "Sharpless asymmetric amino hydroxylation." In Name Reactions, 364–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05336-2_271.
Full textConference papers on the topic "Hydroxylation"
Nair, Renjini M., B. Bindhu, and Susmi Anna Thomas. "Hydroxylation of boron nitride nanosheets." In DAE SOLID STATE PHYSICS SYMPOSIUM 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0017307.
Full textARNHOLD, J., and J. GEYER. "IRON-MEDIATED HYDROXYLATION OF PHTHALIC HYDRAZIDE." In Bioluminescence and Chemiluminescence - Progress and Current Applications - 12th International Symposium on Bioluminescence (BL) and Chemiluminescence (CL). WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812776624_0029.
Full textZhu, Ming, Ruiqing Peng, Xin Liang, Zhengdao Lan, Meng Tang, Pingping Hou, Jian H. Song, et al. "Yap1 Hydroxylation Suppress Prostate Cancer Metastasis." In Leading Edge of Cancer Research Symposium. The University of Texas at MD Anderson Cancer Center, 2022. http://dx.doi.org/10.52519/00102.
Full textPeterle, Marcos M., Marcelo V. Marques, and Marcus M. Sá. "α-Hydroxylation of malonates under mild reaction conditions." In 15th Brazilian Meeting on Organic Synthesis. São Paulo: Editora Edgard Blücher, 2013. http://dx.doi.org/10.5151/chempro-15bmos-bmos2013_2013820152632.
Full textKryuchkova, Ye V., G. L. Burygin, N. E. Gogoleva, Y. V. Gogolev, E. I. Shagimardanova, A. S. Balkin, A. Y. Muratova, and O. V. Turkovskaya. "A genomic analysis of the catabolism of aromatic compounds in Azospirillum brasilense SR80." In 2nd International Scientific Conference "Plants and Microbes: the Future of Biotechnology". PLAMIC2020 Organizing committee, 2020. http://dx.doi.org/10.28983/plamic2020.133.
Full textWeber, Juliane, Jacquelyn Bracco, Ke Yuan, Vitalii Starchenko, Peter Eng, Joanne Stubbs, Matthew Boebinger, Brittany Moseley, and Gabriela Camacho. "Effect of Impurities on Magnesium Oxide Hydroxylation and Carbonation." In Goldschmidt2023. France: European Association of Geochemistry, 2023. http://dx.doi.org/10.7185/gold2023.18053.
Full textXiong, Gaofeng, Rachel Stewart, Jie Chen, Tianyan Gao, Timothy Scott, Luis Samayoa, Kathleen O’Connor, Andrew Lane, and Ren Xu. "Abstract 3035: Collagen hydroxylation promotes TNBC chemoresistance through stabilizing HIF1á." In Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA. American Association for Cancer Research, 2019. http://dx.doi.org/10.1158/1538-7445.am2019-3035.
Full textYe, Pengjin, Wenya Wang, and Lei Wang. "Study of heteropolyacids for the hydroxylation of Naphthalene to naphthol." In 5th International Conference on Information Engineering for Mechanics and Materials. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icimm-15.2015.302.
Full textXiong, Gaofeng, Rachel Stewart, Jie Chen, Tianyan Gao, Timothy Scott, Luis Samayoa, Kathleen O’Connor, Andrew Lane, and Ren Xu. "Abstract 3035: Collagen hydroxylation promotes TNBC chemoresistance through stabilizing HIF1á." In Proceedings: AACR Annual Meeting 2019; March 29-April 3, 2019; Atlanta, GA. American Association for Cancer Research, 2019. http://dx.doi.org/10.1158/1538-7445.sabcs18-3035.
Full textYing-Tsang Lo, Tsan-Huang Shih, Han-Jia Lin, Tun-Wen Pai, and Margaret Dah-Tsyr Chang. "Cross-species identification of hydroxylation sites for ARD and FIH interaction." In 2011 IEEE International Conference on Systems Biology (ISB). IEEE, 2011. http://dx.doi.org/10.1109/isb.2011.6033176.
Full textReports on the topic "Hydroxylation"
Parshikov, Igor. Microbial Transformation of Some Ethylpyridines by Fungi. Intellectual Archive, January 2022. http://dx.doi.org/10.32370/iaj.2635.
Full textGantt, Elisabeth, Avigad Vonshak, Sammy Boussiba, Zvi Cohen, and Amos Richmond. Carotenoid-Rich Algal Biomass for Aquaculture: Astaxanthin Production by Haematococcus Pluvialis. United States Department of Agriculture, August 1996. http://dx.doi.org/10.32747/1996.7613036.bard.
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