Results 1 to 10 of about 34,032 (255)

Chemotaxis to Furan Compounds by Furan-Degrading Pseudomonas Strains [PDF]

open access: yesApplied and Environmental Microbiology, 2012
ABSTRACT Two Pseudomonas strains known to utilize furan derivatives were shown to respond chemotactically to furfural, 5-hydroxymethylfurfural, furfuryl alcohol, and 2-furoic acid. In addition, a LysR-family regulatory protein known to regulate furan metabolic genes was found to be involved in regulating ...
Cara K. Kowalchyk   +7 more
openaire   +4 more sources

Photooxygenation of furans in water and ionic liquid solutions [PDF]

open access: yes, 2009
Photooxygenation of differently functionalized furans is investigated in aqueous solutions and in ionic liquids [emim]Br and [bmim]BF4. The reaction is generally selective and the final products derive from rearrangement of the intermediate ...
A. Astarita   +5 more
core   +1 more source

A surprising steric effect on a tandem cycloaddition/ring-opening reaction : rapid syntheses of difluorinated analogues of (hydroxymethyl)conduritols [PDF]

open access: yes, 2004
Difluorinated analogues of (hydroxymethyl)conduritols can be synthesised from selected furans and a difluorinated dienophile in two reaction ...
Fawcett, J.   +5 more
core   +1 more source

Furans in foods

open access: yesC R C Critical Reviews in Food Science and Nutrition, 1979
Furan represent a class of compounds that have been reported in a wide variety of foods. Normally, they result from thermal decomposition reactions, and, as such, are important in foods. They also possess unique sensory properties and, thus, can significantly contribute to food flavor.
Joseph A. Maga, Ira Katz
openaire   +3 more sources

Synthesis of cyclopropyl-substituted furans by Brønsted acid promoted cascade reactions [PDF]

open access: yes, 2015
Chloroacetic acid promotes an efficient and diastereoselective intramolecular cascade reaction of electron-deficient ynenones to deliver products featuring a 2,3,5-trisubstituted furan bearing a fused cyclopropyl substituent at the 5-position ...
Achmatowicz   +46 more
core   +2 more sources

Iridium-Catalyzed Silylation of Five-Membered Heteroarenes: High Sterically Derived Selectivity from a Pyridyl-Imidazoline Ligand. [PDF]

open access: yes, 2020
The steric effects of substituents on five-membered rings are less pronounced than those on six-membered rings because of the difference in bond angles. Thus, the regioselectivities of reactions of five-membered heteroarenes that occur with selectivities
Hartwig, John F   +3 more
core   +1 more source

Impact of consumer behavior on furan and furan-derivative exposure during coffee consumption : a comparison between brewing methods and drinking preferences [PDF]

open access: yes, 2018
This study examined the influence of consumer behavior on furan, 2-methylfuran, 3-methylfuran, 2,5-dimethylfuran and 2,3-dimethylfuran exposure in coffee.
Rahn, Anja, Yeretzian, Chahan
core   +1 more source

Thioether-catalysed tandem synthesis of furans and cyclic ethers or lactones [PDF]

open access: yes, 2017
Acyclic conjugated ynenediones tethered to an alcohol or carboxylic acid are converted into furanyl-substituted cyclic ethers or lactones in a single step by treatment with the tetrahydrothiophene.
Clark, J. Stephen, Klaus, Verena
core   +1 more source

Pyrolysis of furan in a microreactor [PDF]

open access: yesThe Journal of Chemical Physics, 2013
A silicon carbide microtubular reactor has been used to measure branching ratios in the thermal decomposition of furan, C4H4O. The pyrolysis experiments are carried out by passing a dilute mixture of furan (approximately 0.01%) entrained in a stream of helium through the heated reactor.
Mark R. Nimlos   +7 more
openaire   +3 more sources

Photooxidations of 2-(γ,ε-Dihydroxyalkyl) Furans in Water: Synthesis of DE-Bicycles of the Pectenotoxins [PDF]

open access: yes, 2012
Photooxygenations of 2-(γ,ε-dihydroxyalkyl) furans in H2O followed by in situ reduction and ketalization affords, in one synthetic operation, DE-bicyclic ketals of the ...
Kouridaki, Antonia   +2 more
core   +1 more source

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