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Esmael Rostami 《Phosphorus, sulfur, and silicon and the related elements》2013,188(9):1853-1866
Abstract New dinaphthosulfoxide aza crowns were prepared from the corresponding dinaphthosulfoxide diester and diamines under reflux conditions (conventional heating) and microwave (MW) irradiation. These reaction routes were used for the synthesis of a series of aza crowns, such as dinaphthosulfide, dinaphthosulfone, dibenzosulfide, and dibenzosulfoxide. The synthesis of aza crowns under MW irradiation in comparison with conventional heating has several advantages, such as shorter reaction times, simpler reaction conditions, and the use of ecofriendly solvents, higher yields, and regioselectivity. In the MW synthesis, macrocyclization is preferred to oligomerization, and thus, the yields of byproducts are low. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. GRAPHICAL ABSTRACT 相似文献
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Esmael Rostami Abbas Shockravi Hanif Fattahi Davood Heydarian Shima Shahbanzadeh Minaee Shaghayegh Naghdi 《Phosphorus, sulfur, and silicon and the related elements》2013,188(8):2066-2077
Dinaphthosulfone aza macrocycles were synthesized from the reaction of diamines and dinaphthosulfone diester (1,1′-sulfoxobis-(2-naphthoxy(2-methyl acetate))) in methanol in the presence of catalytic amounts of para toluenesulfonic acid (p-TsOH). Dinaphthosulfone diester (1,1′-sulfoxobis-(2-naphthoxy(2-methyl acetate))) was synthesized from the corresponding dinaphthosulfide diester and hydrogen peroxide in formic acid at room temperature. Dinaphthosulfide diester was prepared from initial dinaphtholsulfide diol (1,1′-thio bis(2-hydroxy naphthalene)) and methylchloroacetate. 1H NMR spectroscopy showed the unusual splittings for these dinaphthosulfone aza macrocycles, and this finding could be proposed as the role of tetrahedral structure of sulfone functional group, hydrogen bonding in the cavity and size of macrocycle. 相似文献
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Esmael Rostami Masume Zangooei Marziyh Ghaedi 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3):394-399
Abstract New aza thia crowns were prepared from the reaction of 2,2′-diaminodiphenyl disulfide and diacids or diacid chlorides. Diacids are malonic acid, adipic acid, sebacic acid, and 2,2′-thiodiacetic acid and diacid dichlorides are malonyl chloride, adipoyl chloride, sebacoyl chloride, and 2,2′-thiodiacetyl chloride. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional figures.] 相似文献
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由(+)-2-氨基丁醇合成氮杂手性冠醚 总被引:2,自引:0,他引:2
手性冠醚由于具有手性识别和不对称催化有机反应的性质而受到人们的重视,有关它们的合成及性质,已很多论述。氮杂冠醚则是合成穴醚、双冠醚、套索冠醚(LariatEther)等的重要中间体,也可与高分子材料(高分子载体或高分子基质)连接,用于有机化合物的色谱分离。氮杂手性冠醚兼备手性和氮杂冠醚两种特性,而可能具有广泛的用途。 相似文献
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《Analytical letters》2012,45(9):2059-2064
Abstract Peroxyoxalate chemiluminescence is used for the determination of pentachlorophenol and 1-naphthol in soil. 1-Naphthol is brominated to make it amenable to the procedure. Calibration curves are linear over concentration ranges spanning four orders of magnitude and limits of detection are at the micromolar level. the processes can be carried out in the soil without prior extraction of the analytes. 相似文献
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文献曾报道以铝-镍合金为还原剂, 在稀碱水溶液中, 可以将1-萘酚(1)以高收率还原为5,6,7,8-四氢-1-萘酚(2). 本研究工作发现, 在相同的条件下该反应除了生成少量2外, 3,4-二氢-2H-萘-1-酮(3)和1,2,3,4-四氢-1-萘酚(4)为主要产物, 该结果明显不同于文献报道, 对反应产物分布及其可能机理进行了探讨. 该还原反应体系为3,4-二氢-1(2H)-萘酮(3)和1,2,3,4-四氢-1-萘酚(4)的合成提供了一条新途径. 相似文献
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The extraction behavior of Sm(III), Eu(III) ,Er(III) and Yb(III) with 1- nitroso -2- naphthol (HA) in paraffin has been studied. The composition of extracted complexes has been determined to be LnA3 by slope analysis method. The effect of temperature on extraction system is also investigated and thermodynamic parameters are obtained. 相似文献
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Esmael Rostami Davood Heidaryan Hanif Fattahi Abbas Shockravi Mehdi Zarei Farokh Rakhshanderu 《Phosphorus, sulfur, and silicon and the related elements》2013,188(7):1924-1934
Four new dinaphthosulfide and dibenzosulfide aza podands were synthesized. The synthesis of these podands was performed under three different reaction conditions: 1) diester, K 2 CO 3 , methanol, and RT; 2) diester, ethanolamine, and microwave (MW); and 3) diacid dichloride, ethanolamine, Et 3 N, CH 2 Cl 2 , RT. Two kinds of diester (dinaphthosulfide and dibenzosulfide) were used for the preparation of dihydroxy podands. These dihydroxy podands were reacted with thionyl chloride to afford dichloro podands. The second route gave excellent yields of dihydroxy podands. Dichloro podands are more soluble than dihydroxy podands in conventional solvents such as methanol, chloroform, and acetonitrile. 相似文献
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《Analytical letters》2012,45(10):2251-2268
Abstract The interaction of 1-naphthol and 2-naphthol with several quaternary ammonium salts was studied. Spectrofluorimetric methods were developed for the determination of both naphthols in hexadecyltrimethylammonium bromide micellar medium. The detection limits are 1.4 and 10.2 ng/ml for 1-naphthol, and 6.2 and 5.1 ng/ml for 2-naphthol employing the conventional and synchronous spectrofluorimetric methods, respectively. The use of the first-derivative spectrum allows for the simultaneous determination of both naphthols. The recoveries of 1-naphthol and 2-naphthol in natural waters are acceptable. 相似文献
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Summary A high-performance liquid chromatographic method has been developed for the simultaneous quantitative determination of resorcinol
and 1-naphthol in hair tonic and haircolor products. The two compounds could be separated on a μBondapak C18 column by elution with 50∶50 (v/v) methanol-water as mobile phase. The retention times of resorcinol and 1-naphthol were 2.5 and 7.0 min, respectively. Seven
dye intermediates could be analyzed within 12 min without any interference with the peaks of resorcinol and 1-naphthol from
other cosmetic ingredients present in the haircolor liquid or cream. The results obtained were in good agreement with those
obtained by a spectrophotometric method. 相似文献
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A series of 2-aminochromene derivatives including 2-amino-ben-zo[ h ] chromene, 2-amino-benzo [ f ] chromene and 2-amino-pyrano [3,2-h ]quinolin derivatives was synthesized from aryl-aldehyde, malononitrile or ethyl cyanoacetate and 1-naphthol or 2-naphthoi or 8-hydroxyquinoline in refluxing ethyl alcohol cat-alyzed by KF-Al2O3. The structures were confirmed by X-ray analysis. 相似文献
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阳离子型微乳液对显色剂1—(2—吡啶偶氮)—2—萘酚的增溶作用 总被引:5,自引:0,他引:5
以光度法研究了阳离子型微乳液对显色剂1-(2-吡啶偶氮)-2-萘酚(PAN)的增溶作用,通过测定PAN在阳离子型CTMAB/n-C5H11OH/n-C9H20微乳液中的“胶束位”n和结合常数K,并与相同表面活性剂胶束体系比较,探讨了微乳液对显色剂PAN的增溶作用。 相似文献