Results 291 to 300 of about 111,305 (353)

Assaying for hydroxyl radicals: Hydroxylated terephthalate is a superior fluorescence marker than hydroxylated benzoate

Free Radical Research, 1999
Generation of hydroxyl radicals in terephthalate (benzene-1,4-dicarboxylic acid) solution yields fluorescent 2-hydroxy-terephthalate. The reaction product is stable for hours and can readily be assessed using standard fluorimeters. The efficiency, i.e.
Karl H. Summer, Manfred Saran
openaire   +3 more sources

Photocatalytic Hydrogen-Evolution Cross-Couplings: Benzene C-H Amination and Hydroxylation.

Journal of the American Chemical Society, 2016
We present a blueprint for aromatic C-H functionalization via a combination of photocatalysis and cobalt catalysis and describe the utility of this strategy for benzene amination and hydroxylation.
Yi-Wen Zheng, Bin Chen, Pan Ye, K. Feng, Wenguang Wang, Qing-Yuan Meng, Lizhu Wu, C. Tung   +7 more
semanticscholar   +1 more source

The screening of microorganisms for hydroxylation activity: Hydroxylation of diamantanols

Biotechnology Letters, 1982
1-and/or 4-diamantanols are hydroxylated by various species of the genus Rhizopus giving rise to diamantandiols. The GLC method revealed both the species specificity of the organism and substrate specificity in the bioconversion. The effectivity of biotransformation by some species of the genus Rhizopus indicates that the procedure could be used for ...
Miloslav Podojil, J. Burda, V. Krumphanzl, J. Třiska, Helena Lipavská, L. Vodička, Zdenko Vaněk   +6 more
openaire   +2 more sources

Effective Inhibition of Hydroxyl Radicals by Hydroxylated Biphenyl Compounds

Free Radical Research Communications, 1993
In aqueous media, approximate rate constants for the reactions between hydroxyl radicals (.OH) and biphenyl compounds such as dehydrodieugenol, magnolol, honokiol, dehydrodidihydroeugenol, dehydrodivanillyl alcohol, and dehydrodicreosol were estimated by competition reactions for .OH between these biphenyls and 5,5-dimethyl-1-pyrroline-N-oxide (DMPO ...
Keisuke Makino, Akifumi Hagi, Kunio Mimura, Takeshi Ikemoto, Akira Murakami, Junsei Taira   +5 more
openaire   +3 more sources

Enzymatic hydroxylation reactions

Current Opinion in Biotechnology, 2000
During the past 18 months, considerable progress has been made in the understanding of the key enzyme-substrate interactions that control the regioselectivity and stereoselectivity of the hydroxylation reaction performed by cytochrome-P450-dependent enzymes of mammalian origin. The manipulation of microbial hydroxylating enzymes, in both whole-cell and
Herbert L. Holland, Hedda K. Weber
openaire   +3 more sources

Preparation of a thermally conductive biodegradable cellulose nanofiber/hydroxylated boron nitride nanosheet film: the critical role of edge-hydroxylation

, 2018
Chemical modification of boron nitride nanosheets (BNNSs) is a simple but effective method to improve their dispersion and compatibility within polymer nanocomposites.
Kai Wu, Ping-Chieh Liao, R. Du, Qin Zhang, Feng Chen, Q. Fu   +5 more
semanticscholar   +1 more source

Copper-Catalyzed Hydroxylation of (Hetero)aryl Halides under Mild Conditions.

Journal of the American Chemical Society, 2016
The combination of Cu(acac)2 and N,N'-bis(4-hydroxyl-2,6-dimethylphenyl)oxalamide (BHMPO) provides a powerful catalytic system for hydroxylation of (hetero)aryl halides.
Shanghua Xia, Lu Gan, Kailiang Wang, Zheng Li, D. Ma   +4 more
semanticscholar   +1 more source

Microsomal hydroxylation of decane

Biochimica et Biophysica Acta (BBA) - Lipids and Lipid Metabolism, 1969
Abstract 1. 1. Aliphatic hydrocarbons (hexane, octane and decane) were oxidized in the microsomes from the livers of mouse, rat, rabbit, beef, pigeon and chick embryo. 2. 2. The oxidation of decane by mouse liver microsomes required NADPH and O 2 .
Kusunose Masamichi, Ichihara Kosuke, Kusunose Emi   +2 more
openaire   +3 more sources

Fe-Based Metal–Organic Frameworks for Highly Selective Photocatalytic Benzene Hydroxylation to Phenol

, 2015
Phenol is one of the most important chemicals in industry. One-step selective benzene hydroxylation is an attractive yet challenging method for phenol production, especially when such a reaction can be driven by solar energy.
Dengke Wang, Mengtao Wang, Z. Li
semanticscholar   +1 more source

Ruthenium-Catalyzed C-H Hydroxylation in Aqueous Acid Enables Selective Functionalization of Amine Derivatives.

Journal of the American Chemical Society, 2017
The identification, optimization, and evaluation of a new catalytic protocol for sp3 C-H hydroxylation is described. Reactions are performed in aqueous acid using a bis(bipyridine)Ru catalyst to enable oxidation of substrates possessing basic amine ...
James B. C. Mack, John D. Gipson, J. Du Bois, M. Sigman   +3 more
semanticscholar   +1 more source