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Showing 1-30 of 32 results for "V403" within Papers
Highly efficient synthesis of phosphatidylserine in the eco-friendly solvent γ-valerolactone
Duan Z-Q and Hu Fei
Green Chemistry, 14(6), 1581-1583 (2012)
Le Xin et al.
ChemSusChem, 6(4), 674-686 (2013-03-05)
Herein, we report an effective approach to electricity storage in biofuels by selective electrocatalytic reduction of levulinic acid (LA) to high-energy-density valeric acid (VA) or γ-valerolactone (gVL) on a non-precious Pb electrode in a single-polymer electrolyte membrane electrocatalytic (flow) cell
Jeremy S Luterbacher et al.
Science (New York, N.Y.), 343(6168), 277-280 (2014-01-18)
Widespread production of biomass-derived fuels and chemicals will require cost-effective processes for breaking down cellulose and hemicellulose into their constituent sugars. Here, we report laboratory-scale production of soluble carbohydrates from corn stover, hardwood, and softwood at high yields (70 to
Hydrogen-independent reductive transformation of carbohydrate biomass into γ-valerolactone and pyrrolidone derivatives with supported gold catalysts.
Xian-Long Du et al.
Angewandte Chemie (International ed. in English), 50(34), 7815-7819 (2011-07-07)
William R H Wright et al.
ChemSusChem, 5(9), 1657-1667 (2012-08-15)
γ-Valerolactone (GVL) has been identified as a potential intermediate for the production of fuels and chemicals based on renewable feedstocks. Numerous heterogeneous catalysts have been used for GVL production, alongside a range of reaction setups. This Minireview seeks to outline
A Vakalopoulos et al.
Organic letters, 3(2), 177-180 (2001-06-30)
[figure: see text] A new rearrangement of functionalized methoxy glycosides and a regioselective as well as stereoselective intramolecular Michael addition giving delta-valerolactones and C-glycosides are described. Applications to the synthesis of marine natural products are reported. Chemoselective deprotection of benzylated
Richard A Bourne et al.
Chemical communications (Cambridge, England), (44)(44), 4632-4634 (2007-11-09)
Phase behaviour is manipulated during the hydrogenation of aqueous levulinic acid in supercritical CO(2) to separate almost pure gamma-valerolactone from water and unreacted acid with reduced energy requirements compared to conventional processing.
Daniele Del Rio et al.
Nutrition (Burbank, Los Angeles County, Calif.), 26(11-12), 1110-1116 (2010-01-19)
The aim of this study was to investigate green tea flavan-3-ol catabolism and plasma pharmacokinetic and urinary excretion by high-performance liquid chromatography with tandem mass spectrometry to evaluate their absolute bioavailability by taking into account all known and some unknown
Frank M A Geilen et al.
Journal of the American Chemical Society, 133(36), 14349-14358 (2011-07-27)
Selective hydrogenation of biogenic carboxylic acids is an important transformation for biorefinery concepts based on platform chemicals. We herein report a mechanistic study on the homogeneously ruthenium/phosphine catalyzed transformations of levulinic acid (LA) and itaconic acid (IA) to the corresponding
Reactive extraction of levulinate esters and conversion to γ-valerolactone for production of liquid fuels.
Elif I Gürbüz et al.
ChemSusChem, 4(3), 357-361 (2011-03-12)
Yan Zhao et al.
Bioresource technology, 114, 740-744 (2012-04-18)
In the present study, γ-valerolactone (GVL) is firstly reported to be converted into aromatic hydrocarbons through catalytic pyrolysis. The catalysts and reaction conditions are both critical in maximizing the hydrocarbon selectivity. Four zeolites, i.e. MCM-41, β-zeolite, ZSM-5 and HZSM-5 were
S A Leonovich
Experimental & applied acarology, 32(1-2), 89-102 (2004-05-14)
Extract of steer wool odor was found to excite olfactory receptor(s) in a wall-pore olfactory sensillum on the distal knoll of the Haller's organ. Three active volatile compounds were revealed in this odor by gas chromatography. Electrophysiological experiments revealed two
Mei Chia et al.
Chemical communications (Cambridge, England), 47(44), 12233-12235 (2011-10-19)
Levulinic acid and its esters are converted to γ-valerolactone over metal oxide catalysts by catalytic transfer hydrogenation via the Meerwein-Ponndorf-Verley reaction.
Chemistry. Connecting biomass and petroleum processing with a chemical bridge.
Joseph J Bozell
Science (New York, N.Y.), 329(5991), 522-523 (2010-07-31)
M Iwata et al.
International archives of occupational and environmental health, 51(3), 253-260 (1983-01-01)
n-Hexane is one of the solvents widely used in industry and well known to be neurotoxic. Recently it was clearly revealed that n-hexane is metabolized in vivo and its metabolites are excreted in the urine. However, the relationship between the
Conversion of hemicellulose into furfural using solid acid catalysts in γ-valerolactone.
Elif I Gürbüz et al.
Angewandte Chemie (International ed. in English), 52(4), 1270-1274 (2012-12-06)
H Andresen-Streichert et al.
Journal of analytical toxicology, 37(4), 250-254 (2013-03-15)
Gamma-valerolactone (GVL) is reported to be a substance that can be used as a legal substitute for gamma-hydroxybutyric acid (GHB), which is currently a controlled substance in several countries. Unlike gamma-butyrolactone and 1,4-butanediol, GVL is not metabolized to GHB, which
Catalytic conversion of biomass-derived carbohydrates into gamma-valerolactone without using an external H2 supply.
Li Deng et al.
Angewandte Chemie (International ed. in English), 48(35), 6529-6532 (2009-07-25)
Santiago Aparicio et al.
Physical chemistry chemical physics : PCCP, 11(30), 6455-6467 (2009-10-08)
In this work, an experimental and computational study on the properties and molecular-level liquid structure of gamma-butyrolactone and gamma-valerolactone is reported. These fluids are selected because of their possible use as alternative green solvents considering their favorable environmental and toxicological
S Hein et al.
FEMS microbiology letters, 153(2), 411-418 (1997-08-15)
The aim of this study was the production of the homopolyester poly(4-hydroxybutyric acid) (poly(4HB)) with recombinant strains of Escherichia coli. Wild-type strains and other widely used non-recombinant strains of E. coli are not able to produce polyhydroxyalkanoic acids (PHA) as
Akiko Takagaki et al.
Archives of microbiology, 196(10), 681-695 (2014-06-21)
Two intestinal bacterial strains MT4s-5 and MT42 involved in the degradation of (-)-epigallocatechin (EGC) were isolated from rat feces. Strain MT4s-5 was tentatively identified as Adlercreutzia equolifaciens. This strain converted EGC into not only 1-(3, 4, 5-trihydroxyphenyl)-3-(2, 4, 6-trihydroxyphenyl)propan-2-ol (1)
Conversion of levulinic acid and formic acid into γ-valerolactone over heterogeneous catalysts.
Li Deng et al.
ChemSusChem, 3(10), 1172-1175 (2010-09-28)
Fan-Xin Zeng et al.
ChemSusChem, 6(4), 600-603 (2013-03-08)
Green nylons! Acidic ionic-liquid catalysis for the transformation of γ-valerolactone into methyl 3-pentenoate (M3P) is shown to be performed efficiently under mild conditions. M3P is obtained selectively from a reaction at 170 °C for 3.5 h in the presence of
Xian-Long Du et al.
ChemSusChem, 4(12), 1838-1843 (2011-11-23)
The utilization of biomass has recently attracted tremendous attention as a potential alternative to petroleum for the production of liquid fuels and chemicals. We report an efficient alcohol-mediated reactive extraction strategy by which a hydrophobic mixture of butyl levulinate and
Ryo Shintani et al.
Organic letters, 11(24), 5642-5645 (2009-11-17)
A palladium-catalyzed decarboxylative [4 + 3] cyclization of gamma-methylidene-delta-valerolactones with 1,1-dicyanocyclopropanes has been developed to produce cycloheptane derivatives in a convergent manner. This method can be applied to the synthesis of azepanes by reacting with aziridines, and their asymmetric variants
Laureen J Marinetti et al.
Pharmacology, biochemistry, and behavior, 101(4), 602-608 (2012-02-22)
Gamma butyrolactone (GBL) is metabolized to gamma hydroxybutyrate (GHB) in the body. GHB is a DEA Schedule 1 compound; GBL is a DEA List 1 chemical. Gamma valerolactone (GVL) is the 4-methyl analog of GBL; GVL is metabolized to 4-methyl-GHB;
Jean-Paul Lange et al.
Chemical communications (Cambridge, England), (33)(33), 3488-3490 (2007-08-19)
Methyl pentenoate, a promising Nylon intermediate, is produced in >95% yield via the transesterification of gamma-valerolactone, a bio-based intermediate, under catalytic distillation conditions.
Akiko Takagaki et al.
Bioscience, biotechnology, and biochemistry, 75(3), 582-585 (2011-03-11)
The antioxidative activities of (-)-epigallocatechin gallate (EGCg) metabolites degraded by rat intestinal flora were investigated by a flow injection analysis coupled to an on-line antioxidant detection system with the 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical cation. All of the metabolites were
γ-Valerolactone-a sustainable liquid for energy and carbon-based chemicals
Horvath I, et al.
Green Chemistry, 10(2), 238-242 (2008)
Sys Stybe Johansen et al.
Journal of analytical toxicology, 35(1), 8-14 (2011-01-12)
A simple liquid chromatography-tandem mass spectrometry (LC-MS-MS) method has been developed and validated for simultaneous identification and quantification of γ-hydroxybutyrate (GHB), γ-butyrolactone (GBL), 1.4-butanediol (1.4-BD), and γ-valerolactone (GVL) in whole blood from forensic cases. The sample preparation of whole blood
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