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JCR 2016
جستجوی مقالات
یکشنبه 27 مهر 1404
Iranian Journal of Chemistry and Chemical Engineering
، جلد ۳۹، شماره ۴، صفحات ۶۹-۷۴
عنوان فارسی
چکیده فارسی مقاله
کلیدواژههای فارسی مقاله
عنوان انگلیسی
Novel Functionalized Symmetrical Dibenzosulfoxo-Crown Ethers with High Selectivity for Pb2+, K+, and Ba2+
چکیده انگلیسی مقاله
A new series of crown ether-based macrocycles bearing two hydroxyl groups and a dibenzosulfoxide moiety was synthetized. These symmetrical dibenzosulfoxo- (aza)-crown ethers were synthesized by the reaction of an active symmetrical bisepoxide pod and with diol reagents in the presence of sodium hydride as a strong base and dry tetrahydrofuran as the solvent. In fact,
the reaction begins with the opening of the epoxide rings via the nucleophilic attack (S
N
2) of dialkoxide
and ends with the formation of a macrocyclic ring. The final compounds were characterized
by FT-IR,
1
H NMR,
13
C NMR, and FAB-MS spectroscopic methods. They were evaluated for their extraction
ability and selectivity for various metallic cations in the form of picrate salt in dichloromethane solvent at room temperature. The new macrocycles showed good extraction ability especially for Pb
2+
(72%), K
+
(66%), and Ba
2+
(56%) among the used cations, for
3b
,
3c
, and
3a
respectively. Compound
3b
(
dibenzosulfoxo-20-aza-crown-4-ether
) showed the excellent selectivity for Pb
2+
(72%).
کلیدواژههای انگلیسی مقاله
symmetrical macrocycle,dibenzosulfoxo-crown ethers,cation selectivity,dibenzosulfoxide
نویسندگان مقاله
Sanam Chamani Gouravan |
Department of Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, I.R. IRAN
Samad Bavili Tabrizi |
Department of Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, I.R. IRAN
Mirzaagha Babazadeh |
Department of Chemistry, Faculty of Science, Tabriz Branch, Islamic Azad University, Tabriz, I.R. IRAN
نشانی اینترنتی
https://ijcce.ac.ir/article_36859_7eff5ea9b1804f5d960e46545bdac16c.pdf
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