نتایج جستجو برای: furans

تعداد نتایج: 955  

2013
Marie Hoffmann Solène Miaskiewicz Jean-Marc Weibel Patrick Pale Aurélien Blanc

Various γ-acyloxyalkynyl ketones were efficiently converted into highly substituted furans with 2.5 mol % of triflimide (triphenylphosphine)gold(I) as a catalyst in dichloroethane at 70 °C.

Journal: :Chemical communications 2010
Christophe Corre Stuart W Haynes Nicolas Malet Lijiang Song Gregory L Challis

The label from [3-(13)C]-L-glycerol is incorporated into the hydroxymethyl group of methylenomycin furans suggesting a butenolide intermediate in their biosynthesis.

2016
Leontina Lipan Mohammad Hojjati Hussein El-Zaeddi Lucía Sánchez-Rodríguez Ángel Antonio Carbonell-Barrachina

In this work, the volatile profiles of smoked and non-smoked Iranian rice were identified, and their relative abundance was calculated and compared. Headspace solid-phase microextraction together with gas chromatography-mass spectrometry (SPME-GC-MS) were used to extract and identify the volatile compounds. The main groups of volatiles in Iranian rice were aldehydes, ketones, phenol derivatives...

Journal: :Chemical communications 2011
Maximillian S Hadfield Ai-Lan Lee

Gold(I)-catalysed reaction between cyclopropenes and furans produces functionalised conjugated trienes. The reaction is mild, facile and proceeds with very low catalyst loadings.

Journal: :The Journal of biological chemistry 2006
Shengqiang Gao Renliang Zhang Michael E Greenberg Mingjiang Sun Xi Chen Bruce S Levison Robert G Salomon Stanley L Hazen

We recently identified a novel family of oxidized choline glycerophospholipid (oxPC) molecular species enriched in atheroma that serve as endogenous ligands for the scavenger receptor CD36 (oxPC(CD36)), facilitating macrophage cholesterol accumulation and foam cell formation (Podrez, E. A., Poliakov, E., Shen, Z., et al. (2002) J. Biol. Chem. 277, 38517-38523). A high affinity CD36 recognition ...

Journal: :Chemical communications 2008
Lei Li Charles E Chase F G West

Irradiation of pyran-2-ones bearing pendent furans in aqueous MeOH followed by heating furnished fused bicyclic products containing a cyclooctatriene ring.

Journal: :RSC advances 2012
Krishna Damera Bowen Ke Ke Wang Chaofeng Dai Lifang Wang Binghe Wang

A new base-promoted cyclization for the synthesis of substituted benzo[b]furans is described. This method is simple and inexpensive and gives good yields.

Journal: :Chemical communications 2005
Alexei S Karpov Eugen Merkul Thomas Oeser Thomas J J Müller

A novel sequence of Sonogashira coupling and electrophilic addition to an ynone, with concomitant deprotection and cyclocondensation, opens a new one-pot synthesis of 3-halofurans; the method can be readily elaborated to a new sequential Sonogashira-addition-cyclocondensation-Suzuki reaction to furnish 2,3,5-trisubstituted furans in a one-pot fashion.

Journal: :Chemical communications 2011
Marie E Krafft Dinesh V Vidhani John W Cran Mariappan Manoharan

Tandem Au(III)-catalyzed heterocyclization/Nazarov cyclizations leading to substituted carbocycle fused furans are described. An interesting dichotomy of reaction pathways as a function of solvent, confirmed by the isolation and trapping of reaction intermediates, provided a basis for computational studies that supported the experimental findings.

Journal: :Chemistry – A European Journal 2017

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