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New convenient method for synthesis of p-chlorinated calix[4]arenes is reported. The sulfuryl chloride was used for chlorination of unsubstituted at the lower rim calix[4]arenes. The products of this reaction were very suitable for further O-alkylation. 相似文献
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新型杯[4]芳烃衍生物的合成 总被引:1,自引:0,他引:1
以对叔丁基杯[4]芳烃为起始原料,通过一步或两步取代反应合成了对叔丁基杯[4]芳烃的衍生物(1和2),其结构经FT-IR,^1H NMR,FAB-MS表征. 相似文献
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Russian Journal of Organic Chemistry - Some tert-butylcalix[4]arene derivatives were synthesized by thermal and microwave methods. The microwave method was conducted in two ways: (1) all the... 相似文献
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The new chromophore compounds with NLO properties were prepared by Knoevenagel condensation from forrnyl or diformyl calix[4/arene and isophorone derivatives in the presence of piperidine and acetic acid, respectively. In these chromophore calix[4]arenes, the ring locked trienes were employed as the conjugation bridge and electron acceptor in D-π-A units. The NMR spectra demonstrated that they existed in a cone conformation and consequently non-conjugated D-π-A units could be oriented at nearly the same direction. 相似文献
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以对取代酚亚甲基桥三聚体和2,6-二溴甲基对取代酚为原料,在TiCl4催化下环化得到6种新的含不同取代基[Cl,Br,CH3,C(CH3)3]的杯[4]芳烃衍生物,核磁共振谱研究表明:它们在溶液中的优势构象为锥形构象。 相似文献
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Serkan Sayin Gülderen Uysal Akkuş Radek Cibulka Ivan Stibor Mustafa Yilmaz 《Helvetica chimica acta》2011,94(3):481-486
The synthesis of two new flavin substituted calix[4]arene derivatives, 9 and 10 , is described. The first flavin substituted calix[4]arene derivative 9 was synthesized by the reaction of 3‐methylalloxazine ( 5 ) with 25,27‐bis(3‐bromopropoxy)‐26,28‐dihydroxy‐5,11,17,23‐tetra(tert‐butyl)calix[4]arene ( 4 ) in high yield (92%). The other derivative 10 was prepared from 3‐methylalloxazine‐1‐acetic acid ( 7 ) and 25,27‐bis(3‐cyanopropoxy)calix[4]arene ( 3 ). All new compounds were characterized by a combination of FT‐IR and 1H‐NMR spectroscopy, and elemental‐analysis techniques. 相似文献
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Huibiao Liu Baolong Li Yongjian Liu Zheng Xu 《Journal of inclusion phenomena and macrocyclic chemistry》2003,45(1-2):9-11
Two newly identified supramolecule structures arise from self-assembly of theCalix[4]arenes derivatives 1 and 2: one ethyl ester of 1 (or 2) enters into the cavity of another 1 (or 2) forming a 1D long chain structure. The interaction force of the molecules and the crystallization energy might be an important driving force for forming theself-assembled calix[4]arene.
Supplementary Data relating to this article (atomic coordinates, hydrogen coordinates, isotropic displacement parameters, anisotropic displacement parameters, selected geometrical parameters and observed and calculated structure factors) are deposited in the British Library. 相似文献
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新型杯芳烃为载体的铅离子选择电极 总被引:2,自引:0,他引:2
报道了5,11,17,23-四(1,1-二甲基乙基)-25,27-二羟基-26,28-二[(2-丙酰胺)乙氧基]杯[4]芳烃1的合成及以此化合物为载体研制了PVC膜铅离子选择电极。研究了不同极性的膜增塑剂和亲脂性阴离子位点对铅离子选择电极响应性能的影响,测定了铅离子选择电极的性能。铅离子选择电极对铅离子表现出优良的能斯特响应和高选择性,能在pH4.0-6.5的范围内使用,该电极可作为电位滴定的指示电极。 相似文献
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The synthesis of calix[4]arene based dendrimers containing up to seven calix[4]arene moieties is described, including the X-ray crystal structure of a tris-calix[4]arene branching derivative. 相似文献
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Jian Quan LU Li ZHANG Ting Quan SUN Gui Xiang WANG Ling Yan WU 《中国化学快报》2006,17(5):575-577
We report a novel calixarene derivative using 4-bromomethyl-7-methoxycoumarin as the pre-organized unit and apply it to investigate selectively discriminate L-tryptophan from other amino acids in DMF-acetonitrile. 5, 11, 17, 23-Tetra-tert-butyl-25,27-bis-… 相似文献
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The syntheses of chirai calix[4]arene derivatives bearing amino acid residue at the lower rim or upper rim by three different methods were reported. 相似文献
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Hasalettin Deligöz 《Supramolecular chemistry》2013,25(5):317-321
Five new polymeric compounds containing more than one calix[4]arene have been synthesized by reacting an oligomer with 5,11,17,23-tetrakis[(diethylamino)methyl]-25,26,27,28-tetrahydroxycalix[4]arene (L1), 25,27-dimethyl-26,28-dihydroxy-p-tert-butylcalix[4]arene diketone (L2), and p-nitrocalix[4]arene (L3), and chloromethylated polystyrene with 25,27-dimethyl-26,28-dihydroxy-p-tert-butylcalix[4]arene diketone (L4) and p-nitrocalix[4]arene (L5). These compounds were studied by the selective extraction of Fe3+ cation from the aqueous phase into the organic phase and was carried out by using compounds L1–L5. It was observed that the polymer support attached to the lower rim of p-nitrocalix[4]arene was the most efficient carrier of Fe3+ in the extraction process. 相似文献
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Two new pendant‐armed calix[4]arene derivatives 5 and 6 have been synthesized. The study of alkali metal picrates extraction indicates that both compounds show preference of cesium cation, compound 6 in 1,3‐alternate conformation has better extractibility for Cs+ than compound 5. The coordination behavior of compound 6 with cesium cation was studied by 1H NMR spectroscopy. The Cs+ selective electrode based on compound 6 exhibits a linear, near Nernstian response characteristics, the slope is 56.4 mV/decade in me concentration range of 10?4—10?1 mol/L, the selectivity coefficient (logKpotCs.Na) is ?3.39. 相似文献