Synthesis of New Symmetric Disubstituted Dithioether Dithiols
摘要:
The beta,beta'-dihydroxydithioethers, derived from oxirane, have been converted into dithioethers dithiols in good yields. A colloidal solution of gold nanoparticles (AuNPs) with 5,8-dithiadodecane-3,10-dithiol was prepared and showed a good stability from tight binding offered by the thiol group on the Au surfaces.
Synthesis of New β,β′-Diketodithioethers via Swern Oxidation and Study of Their Hydrazone Formation Rate
作者:Seyed Mohammad Seyedi、Hamid Sadeghian、Zohreh Safari
DOI:10.1080/10426500802453989
日期:2009.9.18
The synthesis of β,β′-diketodithioethers 4b–j from corresponding β,β′-dihydroxydithioethers 3b–j was carried out by a Swern oxidation using DMSO-oxalyl chloride as oxidizing agent. β,β′-Dihydroxydithioethers 3b–j were prepared by the reaction of two molar equivalents of epoxides 1b–j with dimercaptoethane 2 in the presence of a saturated aqueous solution of potassium carbonate. The reactivity behavior
The Green Method for Regiospecific Ring Opening of Epoxide with Dimercaptoethane
作者:Seyed Mohammad Seyedi、Hamid Sadeghian、Masoomeh Rezai
DOI:10.1080/10426500701313888
日期:2007.6.14
A simple, efficient, and environmentally friendly one-step regiospecefic ring opening of strained epoxides with dimercaptoethane as a nucleophile in nearly saturated aqueous potassium carbonate is reported. The synthesized beta, beta '-dihydroxydithioether compounds were confirmed by elemental analysis, H-1 NMR, C-13 NMR, and MS spectral studies.
Synthesis and Biological Evaluation of Some New Thioether-Ester Crown Ethers
作者:Seyed Mohammad Seyedi、Ali Sadeghian、Hamid Sadeghian、Ayla Hazrathoseyni、Mohammad Sadeghian
DOI:10.1080/10426500600917060
日期:2007.1.1
New thioether-ester crown ethers have been synthesized starting from oxalyl chloride and different beta,beta'-dihydroxydithioethers. The synthesized compounds are screened for their antibacterial activity. Among the macrocyclic thioetheresters (5a-j), only 5,12-di[(allyloxy)methyl]-1,4-dioxa-7,10-dithiacyclododecane2,3-dione (5e) and 5,12-di(isopropoxymethyl)-1,4-dioxa-7,10-dithiacyclododecane2,3-dione (5)9 were effective inhibitors against Staphilococcus aureus methicillin resistance and Pseudomanas aeruginosa with an MIC value of 525 and 265 mu M. Structures of the synthesized compounds have been confirmed by H-1 NMR, C-13 NMR, and MS spectral studies.