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
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.
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.
