628-39-7Relevant academic research and scientific papers
Organoselenides from Nicotiana tabacum genetically modified to accumulate selenium
Matich, Adam J.,McKenzie, Marian J.,Brummell, David A.,Rowan, Daryl D.
, p. 1098 - 1106 (2009)
Nicotiana tabacum L. (tobacco) plants were transformed to overexpress a selenocysteine methyltransferase gene from the selenium hyperaccumulator Astragalus bisulcatus (Hook.) A. Gray (two-grooved milkvetch), and an ATP-sulfurylase gene from Brassica oleracea L. var. italica (broccoli). Solvent extraction of leaves harvested from plants treated with selenate revealed five selenium-containing compounds, of which four were identified by chemical synthesis as 2-(methylseleno)acetaldehyde, 2,2-bis(methylseleno)acetaldehyde, 4-(methylseleno)-(2E)-nonenal, and 4-(methylseleno)-(2E,6Z)-nonadienal. These four compounds have not previously been reported in nature.
Aqueous phase preparation method of dialkyl diselenide ether compound
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Paragraph 0037-0041, (2021/11/21)
The method comprises the following steps: taking the compound represented by the formula (II) as a reaction raw material and I as a reaction raw material, and taking water or ethanol as a solvent under Se 40 - 75 °C conditions to obtain the reaction liquid to obtain the dialkyl diselenium ether compound shown in the formula (II KOH). The reaction is short in reaction time, does not need a metal catalyst, uses water as a solvent, and belongs to green and environment-friendly reaction. Economy, high efficiency, green, environmental protection.
Continuous Electrochemical Synthesis of Iso-Coumarin Derivatives from o-(1-Alkynyl) Benzoates under Metal- and Oxidant-Free
Lin, Xinxin,Fang, Zheng,Zeng, Cuilian,Zhu, Chenlong,Pang, Xinyan,Liu, Chengkou,He, Wei,Duan, Jindian,Qin, Ning,Guo, Kai
supporting information, p. 13738 - 13742 (2020/10/02)
A non-oxidant and metal-free strategy for synthesizing iso-coumarin by using a continuous electrochemical microreactor to initiate an oxidative cyclization reaction of o-(1-alkynyl) benzoate and radicals. This efficient and clean continuous electrosynthesis method not only avoids the complicated gas protection operation and production of by-products in the batch processes, but also help to overcome the difficulty that batch metal catalysis and electrocatalysis are difficult to scale up, and has the potential for pilot-scale experiment.
Recyclable 1,2-bis[3,5-bis(trifluoromethyl)phenyl]diselane-catalyzed oxidation of cyclohexene with H2O2: A practical access to trans-1,2-cyclohexanediol
Yu, Lei,Wang, Jun,Chen, Tian,Wang, Yuguang,Xu, Qing
, p. 652 - 656 (2014/08/05)
1,2-Bis[3,5-bis(trifluoromethyl)phenyl]diselane-catalyzed oxidation of cyclohexene by hydrogen peroxide affords a quick, clean and practical access to the important compound trans-1,2-cyclohexanediol under mild conditions. The highly atom-economic properties, clean procedures, high reaction concentration, short reaction time, mild conditions and eco-friendly, recyclable and low loading catalysts facilitate this methodology for possible future practical industrial production. Copyright
Reaction of Mono- and Dihaloalkanes with Mixed Solutions of Chalcogens in Alkaline Reductive Systems
Deryagina,Grabel'nykh,Mamaseva
, p. 711 - 714 (2007/10/03)
Sufur-selenium, sulfur-tellurium, selenium-tellurium, and sulfur-selenium-tellurium mixtures readily dissolve in the hydrazine hydrate-alkali system to form chalcogenide anions. Alkylation of the latter with ethyl bromide results in preferential formation
Perthio- and perseleno-1,3-butadienes, -but-1-ene-3-ynes, and -[3]-cumulenes: One-step syntheses from 1,4-dilithio-1,3-butadiyne
Block, Eric,Tries, Frank,He, Chunhong,Guo, Chuangxing,Thiruvazhi, Mohan,Toscano, Paul J.
, p. 1325 - 1327 (2007/10/03)
(Matrix presented) Treatment of 1,4-dilithio-1,3-butadiyne (1) with dichalcogenides RSSR or RSeSeR affords dithio- and diseleno-1,3-butadiynes (2, 3), perthio- and perseleno-[3]-cumulenes (4, 5), perthio- and perseleno-1,3-butadienes (6, 7), and/or perthio- and perseleno-but-1-ene-3-ynes (8, 9). The products can be controlled by stoichiometry and temperature, by the presence or absence of oxygen, and by choice of the "R" group. By X-ray crystallography, hexa(methylthio)-1,3-butadiene is highly twisted, with a torsion angle [Φ(CCCC)] of 84.7° and an elongated C(2)-C(3) distance of 1.484(3) A.
Cross-coupling of (Z)-1,2-bis(ethylseleno)ethene with the Grignard reagents
Martynov, Alexander V.,Potapov, Vladimir A.,Amosova, Svetlana V.,Makhaeva, Nataliya A.,Beletskaya, Irina P.,Hevesi, Laszlo
, p. 101 - 103 (2007/10/03)
The nickel-catalyzed cross-coupling of (Z)-1,2-bis(ethylseleno)ethene with the alkyl magnesium bromides proceeds with substitution of both ethylseleno groups to afford symmetrical alkenes, (Z)-RCH=CHR, in high yield with complete retention of configuratio
New Routes to Poly(Alkylene Sulfidoselenides)
Deryagina, E. N.,Grabelnykh, V. A.,Russavskaya, N. V.,Alekminskaya, O. V.
, p. 1729 - 1733 (2007/10/03)
A procedure was developed for preparing mixed poly(alkylene sulfidoselenides) by simultaneous dissolution of sulfur and selenium in basic reducing systems NaOH (KOH)-N2H4 * H2O-H2O, followed by alkylation of the resulting solutions with bielectrophilic agents.
A Route to Organyl(trialkoxysilyl)chalcogenides and Dichalcogenides, Bis(trialkoxysilylmethyl)chalcogenides and Dichalcogenides
Sorokin, M. S.,Voronkov, M. G.
, p. 1883 - 1890 (2007/10/03)
Reactions of organylchalcogenomagnesium halides RYMgX (in situ) (R = Me, Et, Ph; Y = S, Se, Te; X = Br, I) with (halomethyl)trialkoxysilanes X'CH2Si(OR')3 (X' = Cl, I; R' = Me, Et) at reflux in tetra-hydrofuran and the systems of tetrahydrofuran-acetonitrile 1 :2, and ether-acetonitrile 1:2 are studied. These reactions are shown to lead to formation of mixtures of corresponding organyl(trialkoxysilylmethyl)chalcogenide and -dichalcogenide, bis(trialkoxysilyl methyl)chalcogenide and -dichalcogenide, as well as the contaminants 2,2,6,6-tetraalkoxy-2,6-disila-4-chalcogen-1-oxane, diorganylchalcogenide and -dichalcogenide, and other organic and organosilicon compounds. Composition of the formed mixtures depends considerably on the structure of R, nature of the chalcogen Y (S, Se, Te), and halides X and X' in the initial reagents, and reaction conditions. The most of synthesized and isolated organosilicon chalcogenides are newly obtained compounds.
