35684-37-8Relevant articles and documents
Synthetic method of diaryl ditellurium ether compound
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Paragraph 0057-0070, (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.
Modulating Chalcogen Bonding and Halogen Bonding Sigma-Hole Donor Atom Potency and Selectivity for Halide Anion Recognition
Beer, Paul D.,Docker, Andrew,Guthrie, Charles H.,Kuhn, Heike
supporting information, p. 21973 - 21978 (2021/09/02)
A series of acyclic anion receptors containing chalcogen bond (ChB) and halogen bond (XB) donors integrated into a neutral 3,5-bis-triazole pyridine scaffold are described, in which systematic variation of the electronic-withdrawing nature of the aryl sub
Reactivity of Selenocystine and Tellurocystine: Structure and Antioxidant Activity of the Derivatives
Satheeshkumar, Kandhan,Raju, Saravanan,Singh, Harkesh B.,Butcher, Ray J.
supporting information, p. 17513 - 17522 (2018/11/23)
l-Selenocystine (5) and l-tellurocystine (6) have been prepared and the reactivity of these amino acids, i.e., oxidation of 5 and 6, has been performed at various pH values. Hydrogen peroxide was used as an oxidant and it was treated with 5 and 6 in excess in acidic and basic media. Compound 5, upon oxidation, afforded SeIV and SeVI products. Selenocysteic acid [HO3SeCH2CH(NH2)COOH] 9, a novel SeVI compound, was isolated and characterised by single-crystal X-ray diffraction studies. In contrast, l-tellurocystine, upon oxidation with H2O2, afforded TeII and TeIV products. Zwitterionic organotellurolate(IV), [TeCl3CH2CH(NH3)COOH] 13, was isolated and characterised by NMR and IR spectroscopy, mass spectrometry and elemental analysis. Compound 13 crystallizes in an orthorhombic space group. l-Tellurocystine, when reduced with NaBH4, produced the desired tellurolate intermediate, which was trapped with bromoacetic acid. Furthermore, l- and d-tellurocysteine derivatives, [(RTeCH2CH(NH2)COOH) R=phenyl, substituted phenyl and naphthyl (24–39)] were synthesised and evaluated for their glutathione peroxidase (GPx)-like activities. The results show that l-tellurocysteine derivatives have higher activity than their D-tellurocysteine analogues. DFT calculations for l-tellurocysteine derivatives provided information about the bond lengths and bond angles. This study reveals that the introduction of naphthyl substituents (35–38) leads to twisted conformation of the amino acid derivatives.
