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4,970 Newest Publications about the topic sulfurrss
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01-Aug-2013 | Kaleen K. Childers, Andrew M. Haidle, Michelle R. Machacek, J. Patrick Rogers, Eric Romeo, ChemInform, 2013
Abstract Various target compounds, intermediates in the preparation of pharmacologically active substances, are directly obtained by base‐promoted condensation of 2‐amido‐2‐cyanoacetamide (I) with a variety of aldehydes in the presence of elemental sulfur.
01-Aug-2013 | Xiaowei Wang, Yanjun Li, Yu Yuan, ChemInform, 2013
Abstract The process involves in situ formation of disulfides from aryl iodides and sulfur under superbase conditions.
01-Aug-2013 | Oliver Stehling; Roland Lill, CSH Perspectives, 2013
Iron–sulfur (Fe/S) clusters belong to the most ancient protein cofactors in life, and fulfill functions in electron transport, enzyme catalysis, homeostatic regulation, and sulfur activation. The synthesis of Fe/S clusters and their insertion into apoproteins requires almost 30 proteins in the ...
01-Aug-2013 | Akio Kamimura; Koichiro Miyazaki; Yu Yamane; Ryuichiro Yo; Shingo Ishikawa; Hidemitsu Uno; Michinori Sumimoto, The Journal of Organic Chemistry, 2013
Bicyclic dihydrothiophenes are readily prepared by a radical cascade cyclization reaction triggered by the addition of a thiyl radical under thermal or photoirradiation conditions. The translocated radical attacks the sulfur atom in the initial radical donor unit in an SHi manner. Sufficient ...
01-Aug-2013 | Lin He; Xingang Li; Guozhong Wu; Feng Lin; Hong Sui, Energy & Fuels, 2013
The composition and distribution of saturates, aromatics, resins, and asphaltenes (SARA) fractions in the bituminous layer on the surface of Athabasca oil sands were identified using elemental analysis (EA), X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (SEM) ...
01-Aug-2013 | Juha M. Linnanto; Jouko E. I. Korppi-Tommola, Journal of Physical Chemistry B, 2013
A description of intra-chlorosome and from chlorosome to baseplate excitation energy transfer in green sulfur bacteria and in filamentous anoxygenic phototrophs is presented. Various shapes and sizes, single and multiwalled tubes, cylindrical spirals and lamellae of the antenna elements mimicking ...
31-Jul-2013 | Antonio Bauzá, David Quiñonero, Pere M. Deyà, Antonio Frontera, Chemistry - An Asian Journal, 2013
Abstract Sulfide:quinone oxidoreductase (SQR) is a flavin‐dependent enzyme that plays a physiological role in two important processes. First, it is responsible for sulfide detoxification by oxidizing sulfide ions (S2− and HS−) to elementary sulfur and the electrons are first transferred to ...
31-Jul-2013 | Rosa Becerra; John Patrick Cannady; Nicola Goldberg; Robin Walsh, Physical Chemistry Chemical Physics, 2013
Time-resolved kinetic studies of the reaction of silylene, SiH2, with SO2 have been carried out in the gas phase over the temperature range 297-609 K, using laser flash photolysis to generate and monitor SiH2. The second order rate coefficients at 1.3 kPa (SF6 bath gas) fitted the Arrhenius ...
31-Jul-2013 | Tooran Khazraie Shoulaifar; Nikolai DeMartini; Maria Zevenhoven; Fred Verhoeff; Jaap Kiel; Mikko Hupa, Energy & Fuels, 2013
Torrefaction is heat treatment of biomass at relatively low temperatures (∼240–300 °C) in the absence of air. The torrefied fuel offers advantages to traditional biomass, such as higher energy density, better grindability, and reduced biological decay. These factors could, for example, lead to ...
31-Jul-2013 | Ona Illa; Mariam Namutebi; Chandreyee Saha; Mehrnoosh Ostovar; C. Chun Chen; Mairi F. Haddow; Sophie Nocquet-Thibaul ..., Journal of the American Chemical Society, 2013
The chiral sulfide, isothiocineole, has been synthesized in one step from elemental sulfur, γ-terpinene, and limonene in 61% yield. A mechanism involving radical intermediates for this reaction is proposed based on experimental evidence. The application of isothiocineole to the asymmetric ...