30983-00-7Relevant academic research and scientific papers
Nucleophilic Cleavage of the Ether Bond of Chlorex in the Chalcogenation with Diphenyl Dichalcogenides in the System Hydrazine Hydrate–KOH
Albanov, A. I.,Bogdanova, I. N.,Grabel?nykh, V. A.,Istomina, N. V.,Korchevin, N. A.,Nikonova, V. S.,Rozentsveig, I. B.,Russavskaya, N. V.,Sosnovskaya, N. G.
, p. 1760 - 1762 (2020)
Abstract: The synthesis of unsymmetrical pincer ligands by reactions of diphenyl disulfide and diphenyl diselenide with bis(2-chloroethyl) ether in the system hydrazine hydrate–KOH was accompanied by the formation of 1,2-bis(phenylsulfanyl)ethane, 1,2-bis(phenylselanyl)ethane, and 1-(phenylselanyl)-2-(phenylsulfanyl)ethane as by-products with an overall yield of 23% as a result of nucleophilic cleavage of the C–O–C bond in the initial ether.
Synthesis of polydentate chalcogen-containing ligands using the system hydrazine hydrate–base
Levanova,Vilms,Bezborodov,Babenko,Sosnovskaya,Istomina,Albanov,Russavskaya,Rozentsveig
, p. 396 - 401 (2017/05/01)
The reaction of dichlorodiethyl ether or dichlorodiethylamine hydrochloride with potassium or ethanolammonium dichalcogenides prepared in situ from elemental sulfur or selenium in the system hydrazine hydrate–alkali results in oligomeric dichalcogenides,
Synthetic ionophores part 19: Synthesis and ionophore character of 2- aminothiophenol based silver selective acyclic and cyclic receptors
Kumar, Subodh,Bhalla, Vandana,Singh, Harjit
, p. 5575 - 5586 (2007/10/03)
The phase transfer catalysed nucleophillic displacements of 1,5-dibromo- 3-oxapentane, 1,8-dibromo-3,6-dioxaoctane and 1,11-dibromo-3,6,9- trioxaundecane with thiophenol and 2-aminothiophenol provide respective acyclic receptors α,ω-bis(phenylthio/2-aminophenylthio)oxaalkanes (6-11). 1,8-Bis(2-aminophenylthio)-3,6-dioxaoctane (10) reacts with acetic anhydride and isophthaloyl chloride to provide acyclic (12) and macrocyclic (14) receptors, respectively. α,ω-(2-Aminophenylthio) oxaalkanes (9-11) undergo intermolecular cyclodehydro-chlorination with thiodiglycolyl dichloride and pyridine-2,6-dicarbonyl dichloride HCl to provide respective macrocycles 16- 18 and 20-22. The acyclic receptors 6-11 show strong complexation with Ag+ and Pb2+ with poor specificity towards Ag+. The conversion of amine units to amides in 12 significantly lowers the complexation but increases Ag+/M2+ selectivities. The organisation of ligating sites by converting acyclic receptor 12 to its cyclic analogs and the presence of additional ligating sites in cyclic receptors 16-18 and 20-22 not only restores the extraction abilities but also leads to high Ag+/M2+ selectivities. The macrocycles 17 and 21 respectively exhibit the highest transport (425) and extraction (564) Ag+/Pb2+ selectivities.
