55843-71-5Relevant academic research and scientific papers
ORGANIC TELLURIUM COMPOUND, METHOD FOR PRODUCING SAME, LIVING RADICAL POLYMERIZATION INITIATOR, METHOD FOR PRODUCING VINYL POLYMER, AND VINYL POLYMER
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Paragraph 0178-0181, (2020/02/27)
An organic tellurium compound is disclosed having a versatility that, when used as a living radical polymerization initiator, it is applicable to polymerization of a vinyl monomer in an aqueous vehicle without using any surfactant or dispersant. The organ
Synthesis of intramolecularly coordinated heteroleptic diorganotellurides and diorganotelluroxides: Isolation of monomeric diorganotelluroxide [{2,6-(Me2NCH2)2C6H3}2TeO]and diorganohydroxyt
Gupta, Anand,Deka, Rajesh,Raju, Saravanan,Singh, Harkesh B.,Butcher, Ray J.
, p. 10 - 17 (2019/05/17)
A series of heteroleptic diorganotellurides (2-NMe2CH2C6H4)(R)Te, where R = C6H5 (5), 2-MeC6H4 (6), 2,6-MeC6H3 (7)and 2,6-iPrC6/
Formation of α-chalcogenyl acrylamides through unprecedented chalcogen-mediated metal-free oxyfunctionalization of ynamides with DMSO as an oxidant
Huang, Hai,Tang, Luning,Liu, Qi,Xi, Yang,He, Guangke,Zhu, Hongjun
supporting information, p. 5605 - 5608 (2016/05/09)
A novel chalcogen-mediated oxyfunctionalization mode of ynamides for the synthesis of α-chalcogenyl acrylamides has been developed. Independent of metal catalysts, external oxidants and additives, this mild process afforded a range of structurally diverse
Efficient synthesis of 5-chalcogenyl-1,3-oxazin-2-ones by chalcogen-mediated yne-carbamate cyclisation: An experimental and theoretical study
Monlen, Alicia,Blay, Gonzalo,Domingo, Luis R.,Muoz, M. Carmen,Pedro, Jos R.
supporting information, p. 1020 - 1027 (2015/02/19)
A very efficient synthesis of 5-chalcogenyl-1,3-oxazin-2-ones has been accomplished by the chalcogen-mediated yne-carbamate cyclisation of chiral, non-racemic N-Cbz-protected propargylic amines using PhXY (X = Se, S, Te; Y = Br or Cl) as electrophile sources. The reactions gave good-toexcellent yields for a wide range of substrates. In all cases the reaction was totally regioselective, occurring by a 6-endo-dig process regardless of the nature of the reagent and of the substituents in the starting material. This methodology permits the formation of the 1,3-oxazin-2-one moiety as well as the simultaneous installation of a chalcogen functionality onto the heterocyclic ring. The experimental results have been rationalised by theoretical studies at the B3LYP/6-311G level of theory.
Role of anagostic interactions in cycloplatination of telluroethers: Synthesis and structural characterization
Kolay, Siddhartha,Kumar, Mukesh,Wadawale, Amey,Das, Dasarathi,Jain, Vimal K.
, p. 40 - 47 (2015/07/08)
Abstract Reactions of K2PtCl4 with TeRRE′ gave complexes of composition [PtCl2(TeRRE′)2] (R/RE′ = Ph2(1a), o-tol2 (1b), Mes2(1c), Ph/Mes (1d), o-tol/Mes (1e)). The complex [PtCl2(TeMes2)2] in refluxing THF afforded a mononuclear cyclometalated complex [PtCl{(CH2C6H2Me2-4,6)TeMes}(TeMes2)] (2). It tends to remain in equilibrium with a binuclear derivative [Pt(μ-Cl){(CH2C6H2Me2-4,6)TeMes}]2 (3) in CDCl3 solution. The complexes 1d and 1e did not undergo cyclometalation reaction under similar reaction conditions. The 2 on treatment with PPh3 gave [PtCl{(CH2C6H2Me2-4,6)TeMes}(PPh3)] (4). All the complexes have been characterized by elemental analysis and NMR (1H, 31P, 125Te, 195Pt) spectroscopy. Anagostic interactions have been recognised for facilitation of cyclometalation reactions. The molecular structures of trans-[PtCl2(TeMes2)2] (1c), trans-[PtCl2(PhTeMes)2] (1d), trans-[PtCl2(o-tolTeMes)2] (1e), [PtCl{(CH2C6H2Me2-4,6)TeMes}(TeMes2)] (2) and [PtCl{(CH2C6H2Me2-4,6)TeMes}(PPh3)] (4) have been established unambiguously by single crystal X-ray diffraction analyses.
Cyclopalladation of telluro ether ligands: Synthesis, reactivity and structural characterization
Kolay, Siddhartha,Kumar, Mukesh,Wadawale, Amey,Das, Dasarathi,Jain, Vimal K.
, p. 16056 - 16065 (2015/01/09)
Treatment of [PdCl2(PhCN)2] with diaryl telluride in 1:2 molar ratio gave mononuclear palladium complexes, trans-[PdCl2(TeR2)2] (1) (R = Mes (1a) (Mes = 2,4,6-trimethylphenyl), Ph (1b), o-tol (1c) (o-tol = ortho-tolyl)). Reaction of [PdCl2(TeMes2)2] with one equivalent of [PdCl2(PhCN)2] or Na2PdCl4 with TeRR′ afforded chloro-bridged binuclear complexes, [Pd2(μ-Cl)2Cl2(TeRR′)2] (2) (R/R′ = Mes/Mes (2a); Mes/Ph (2b); Ph/Ph (2c)). A toluene-methanol solution of trans-[PdCl2(TeMes2)2] on refluxing for 30 minutes yielded a binuclear cyclopalladated complex, [Pd2(μ-Cl)2{CH2C6H2(4,6-Me2)TeMes)}2] (3). When the refluxing was prolonged, a mononuclear complex cis-[PdCl2{MesTeCH2C6H2(4,6-Me2)TeMes}] (4) was isolated. Treatment of palladium acetate with TeMes2 afforded an acetato-bridged analogue of 3, [Pd2(μ-OAc)2{CH2C6H2(4,6-Me2)TeMes}2] (5a) together with a very minor component, a tetranuclear complex, [Pd(μ-OAc)(μ-TeMes)]4 (6). This reaction with unsymmetrical tellurides, MesTeR, also gave cyclopalladated complexes [Pd2(μ-OAc)2{CH2C6H2(4,6-Me2)TeR}2] (R = o-tol (5b) and Ph (5c)) in which 2-methyl of the mesityl group of the telluride was exclusively metallated. The complex trans-[PdCl2(TeMes2)2] on refluxing in xylene gave palladium telluride, Pd7Te3. These complexes were characterized by elemental analyses, IR and NMR (1H, 13C and 125Te) spectroscopy. The molecular structures of trans-[PdCl2(TeMes2)2] (1a), [Pd2(μ-Cl)2Cl2(TeMes2)2]·2acetone (2a·2acetone), cis-[PdCl2{MesTeCH2C6H2(4,6-Me2)TeMes}] (4), [Pd2(μ-OAc)2{CH2C6H2(4,6-Me2)TeMes)}2]·toluene (5a·toluene), [Pd2(μ-OAc)2{CH2C6H2(4,6-Me2)Tetol-o}2] (5b) and [Pd(μ-OAc)(μ-TeMes)]4 (6) were established by single crystal X-ray diffraction analyses. The mononuclear complex 1a was isolated in two polymorphic forms each with the trans configuration. This journal is
Facile synthesis of β-organotellurobutenolides via electrophilic tellurolactonization of α-allenoic acids
Xu, Qing,Huang, Xian,Yuan, Jingqi
, p. 6948 - 6951 (2007/10/03)
We report a convenient and highly efficient method for the synthesis of β-organotellurobutenolides by the aryltellurenyl halides-induced electrophilic tellurolactonization of α-allenoic acids under mild conditions. The resulting β-organotellurobutenolides
Synthesis of ketene phenyl- and butyltelluroacetals by a Horner-Wittig route
Silveira, Claudio C.,Cella, Rodrigo,Braga, Antonio L.,Jacob, Raquel G.,Lenard?o, Eder J.,Perin, Gelson
, p. 7712 - 7718 (2007/10/03)
New and efficient methods were developed to prepare ketene organyltelluroacetals in moderate to excellent yields. This was accomplished by reaction of phenyl- or butyltelluromethylphosphonates with phenyl- or butyltellurenyl halides and aldehydes or cyclo
Synthesis of α-phenylchalcogeno acetic acids, ethyl-α-phenylchalcogeno acetates and ethyl-α-halo-α-phenylchalcogeno acetates
Dabdoub, Miguel J.,Guerrero, Palimecio G.,Silveira, Claudio C.
, p. 31 - 38 (2007/10/02)
Reaction of phenyltellurolate or phenylselenolate anion with α-bromoacetic acid under phase transfer conditions using a liquid-solid system affords the α-phenyltelluro acetic acid and the α-phenylseleno acetic acid in 44 and 50percent yields respectively.
Application of the Hammett Equation to the Electrochemical Oxidation of Diaryl Chalcogenides and Aryl Methyl Chalcogenides
Engman, Lars,Persson, Joachim,Andersson, Carl M.,Berglund, Mats
, p. 1309 - 1313 (2007/10/02)
The electrochemical oxidation of symmetrical 4,4'-disubstituted diaryl selenides and tellurides and 4-substituted aryl methyl sulfides, selenides and tellurides has been studied.Peak oxidation potentials show good correlation with Hammett ?+-va
