32294-60-3Relevant articles and documents
Aromatic Substitution and Dealkylation by Alkanetellurolate Anions
Potapov, V. A.,Amosova, S. V.,Petrov, P. A.
, p. 6515 - 6518 (1992)
Under the action of alkanetellurolate anion phenyl halides undergo aromatic substitution followed by dealkylation of the alkyl phenyl telluride thus formed.The generated benzenetellurolate anion can be either alkylated or oxidized to diphenyl ditelluride, or added to acetylene.Butyl methyl telluride and selenide are demethylated by methanechalcogenolate anions.
Oxidative addition of diphenyldichalcogenides PhEEPh (E = S, Se, Te) to low-valent CN-and NCN-chelated organoantimony and organobismuth compounds
Simon, Petr,Jambor, Roman,Ruiszicka, Ales,Dostal, Libor
, p. 239 - 248 (2013)
The reactions of the organoantimony(I) compound L1 4Sb4 (1) (where L1 = [o-C6H 4(CH=NC6H3(i-Pr)2-2,6)]) with diphenyldichalcogenides PhEEPh (E = S, Se, or Te) gave compounds L 1Sb(EPh)2 (E = S (2), Se (3), Te (4)) as the result of the oxidative addition of the antimony(I) atom across the chalcogen-chalcogen bond. The reaction of diphenyldichalcogenides PhEEPh with an in situ prepared organobismuth(I) compound (via reaction of the parent chloride L 1BiCl2 (5) with two equivalents of K[B(s-Bu) 3H]) gave surprisingly diorganobismuth compounds L1 2Bi(EPh) (E = S (6), Se (7), Te (8)) as the major products along with only a trace amount of the intended compounds L1Bi(EPh)2 (E = S (9), Se (10), Te (11)). It turned out that this is the result of instability of 9-11 in solution, and their decomposition provided compounds 6-8. The bismuth compounds containing the pincer-type ligand L2 (L 2 = [o,o-C6H3(CH2NMe 2)2]) containing an extra donor pendant arm were studied with the aim to support their stability by an additional N→Bi interaction. Thus, in situ preparation of the organobismuth(I) compound from L 2BiCl2 (12) and two equivalents of K[B(s-Bu)3H] followed by the addition of PhEEPh gave compounds L2Bi(EPh) 2 (E = S (13), Se (14), Te (15)). Compounds 13-15 showed no tendency for redistribution reaction, contrary to 9-11, due to the rigid coordination of both nitrogen donor atoms of the ligand L2 to the bismuth atom. All studied compounds were characterized by the help of 1H and 13C NMR spectroscopy, by elemental analysis, and except compounds 4, 14, and 15 by single-crystal X-ray diffraction analyses.
Synthetic method of diaryl ditellurium ether compound
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Paragraph 0027-0041, (2021/03/31)
The invention relates to a synthetic method of a diaryl ditellurium ether compound. The method comprises the following steps: putting phenylboronic acid or derivatives thereof, elemental tellurium, trimethylcyano silane and an organic solvent into a reaction container to obtain a mixed solution, heating the mixed solution to 110-140 DEG C, performing stirring to react for 18-30 hours at the temperature to obtain a reaction solution, and carrying out aftertreatment to obtain the diaryl ditellurium ether compound, the ratio of the phenylboronic acid or the derivative thereof to the elemental tellurium to the trimethylnitrile silane is (7-9): (8-10): 1. The synthetic method of the diaryl ditellurium ether compound has the following beneficial effects: 1, the reaction can be performed withoutmetal participation, so that the synthetic method is more environment-friendly and lower in cost; 2, the compatibility of a substrate is good; and 3, the preparation process is simple and easy to operate.
Synthesis, Mechanism Elucidation and Biological Insights of Tellurium(IV)-Containing Heterocycles
Souza, Jo?o Pedro A.,Menezes, Leociley R. A.,Garcia, Francielle P.,Scariot, Débora B.,Bandeira, Pamela T.,Bespalhok, Mateus B.,Giese, Siddhartha O. K.,Hughes, David L.,Nakamura, Celso V.,Barison, Andersson,Oliveira, Alfredo R. M.,Campos, Renan B.,Piovan, Leandro
supporting information, p. 14427 - 14437 (2021/09/25)
Inspired by the synthetic and biological potential of organotellurium substances, a series of five- and six-membered ring organotelluranes containing a Te?O bond were synthesized and characterized. Theoretical calculations elucidated the mechanism for the oxidation-cyclization processes involved in the formation of the heterocycles, consistent with chlorine transfer to hydroxy telluride, followed by a cyclization step with simultaneous formation of the new Te?O bond and deprotonation of the OH group. Moreover, theoretical calculations also indicated anti-diastereoisomers to be major products for two chirality center–containing compounds. Antileishmanial assays against Leishmania amazonensis promastigotes disclosed 1,2λ4-oxatellurane LQ50 (IC50=4.1±1.0; SI=12), 1,2λ4-oxatellurolane LQ04 (IC50=7.0±1.3; SI=7) and 1,2λ4-benzoxatellurole LQ56 (IC50=5.7±0.3; SI=6) as more powerful and more selective compounds than the reference, being up to four times more active. A stability study supported by 125Te NMR analyses showed that these heterocycles do not suffer structural modifications in aqueous-organic media or at temperatures up to 65 °C.
Metal-Free Synthesis of Unsymmetrical Aryl Selenides and Tellurides via Visible Light-Driven Activation of Arylazo Sulfones
Fagnoni, Maurizio,Li, Ankun,Li, Yuxuan,Liu, Junjie,Lu, Kui,Protti, Stefano,Shan, Xiwen,Tian, Miaomiao,Zhao, Xia
, p. 7358 - 7367 (2020/12/01)
A protocol for the visible light driven preparation of unsymmetrical (hetero)aryl selenides and tellurides is described herein. The method exploits the peculiar photoreactivity of arylazo sulfones that act as thermally stable, precursors of aryl radicals under both photocatalyst- and additive-free conditions. The method developed shows an impressive versatility (more than fifty compounds isolated).