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喹啉及其衍生物是合成抗疟药物和某些金属萃取剂的重要原料[1,2]。文献[3,4]曾报道2,3 二取代喹啉衍生物的合成方法。本文以1,2 亚甲二氧基苯为原料,通过酰化、硝化、还原和催化缩合,得到四种4 取代 2 甲基 6,7 亚甲二氧基 3 喹啉酸乙酯Ⅳ,产率为74~87%。化合物Ⅳa-Ⅳd分别通过IR、1HNMR谱、元素分析和质谱表征。合成路线如图1所示。R=a,CH3;b,C2H5;c,CH2CH2CH3;d,CH(CH3)2。图1 4 取代 2 甲基 6,7 亚甲二氧基 3 喹啉酸乙酯合成路线Fig.1 Syntheticroutenof4 substitrtedethyl 2 methyl 6,7 methylenedioxy 3 quinolinecar… 相似文献
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以邻硝基苯甲醛为起始原料,经还原和氨基保护合成2-乙酰胺基苯甲醛(1)。应用环境友好的聚乙二醇-400为溶剂,以N-卤代丁二酰亚胺为卤代试剂对化合物2-乙酰胺基苯甲醛(1)进行卤代,制备了5-溴(氯)-2-乙酰胺基苯甲醛(2a,2b)。在三甲基氯硅烷(TMSCl)催化作用下,5-溴(氯)-2-乙酰胺基苯甲醛(2a,2b)与4-氯乙酰乙酸乙酯发生Friedlnder缩合反应,合成目标产物6-溴(氯)-2-氯甲基-3-喹啉甲酸乙酯(3a,3b)。其中2a,2b,3a,3b的结构经IR、1H NMR、13C NMR、MS得以确定。 相似文献
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以4,6-二甲基-2-甲氧基-1,3-苯二甲酸二乙酯为原料,经Micheal加成、环化、溴化、消除等5步反应,合成新型的多取代2,7-萘二甲酸二乙酯。该合成路线步骤少,收率高,反应条件温和、产物中的4个新化合物的结构均经元素分析、核磁共振、红外光谱和质谱确证。 相似文献
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Halehatty S. Bhojya Naik Machenahalli S. Ramesha Boovanahalli V. Swetha Thopenahalli R. Roopa 《Phosphorus, sulfur, and silicon and the related elements》2013,188(3):533-541
2-chloro-4-methyl quinoline 2 on condensation with semicarbazide hydrochloride gave its semicarbazone. This on reaction with SeO 2 and SOCl2 yielded a new class of novel selenadiazoles 4 and thiadiazoles 5, respectively. The structure of all the compounds were elucidated on the basis of elemental analysis, IR, 1 H NMR, and the mass spectral data. Some derivatives of 9-methyl[1, 2, 3]selenadiazole[4, 5-b] quinoline and 9-methyl[1, 2, 3]thiadiazole [4, 5-b]quinoline have been screened for antimicrobial activities. 相似文献
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MEN Yican ZHANG Jiqian ZHOU Lishan LI Junqiu LIU Jun LI Juan QU Hongmei 《高等学校化学研究》2016,32(4):621-624
A series of quinoline derivatives was obtained in high yields by an efficient one-pot reaction of substituted o-diiodobenzenes with azazirconacyclopentadienes, which were conveniently prepared from one internal alkyne and one nitrile mediated by zirconocene. This proposed synthetic method provides a feasible way to the synthesis of large N-heterocyclic π-conjugated molecules. 相似文献
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用N-(2-甲基)苯基甘氨酸合成了几种(硼、铝、铁、砷和锑)及四价(硅、钛和硒)金属/非金属衍生物。合成是在苯溶液中采用了金属/非金属的异丙氧基化合物和N-(2-甲基)苯基甘氨酸按1∶1和1∶2的配比完成的。一般情况下,合成的产物均为有色固体,以及在产物中有异丙氧基基团残留而显吸湿性。对所制成的衍生物均采用了共沸混合物分析、元素分析和光谱测定等进行了表征。 相似文献
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Synthesis and Biological Screening of New Cyano-Substituted Pyrrole Fused (Iso)Quinoline Derivatives
Maria Cristina Al-Matarneh Roxana-Maria Amrandi Ionel I. Mangalagiu Ramona Danac 《Molecules (Basel, Switzerland)》2021,26(7)
Several new cyano-substituted derivatives with pyrrolo[1,2-a]quinoline and pyrrolo[2,1-a]isoquinoline scaffolds were synthesized by the [3 + 2] cycloaddition of (iso)quinolinium ylides to fumaronitrile. The cycloimmonium ylides reacted in situ as 1,3-dipoles with fumaronitrile to selectively form distinct final compounds, depending on the structure of the (iso)quinolinium salt. Eleven compounds were evaluated for their anticancer activity against a panel of 60 human cancer cell lines. The most potent compound 9a showed a broad spectrum of antiproliferative activity against cancer cell lines representing leukemia, melanoma and cancer of lung, colon, central nervous system, ovary, kidney, breast and prostate cancer. In vitro assays and molecular docking revealed tubulin interaction properties of compound 9a. 相似文献
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Synthesis and Structure Characterization of 1,5‐Benzothiazepine Derivatives Bearing Quinoline Moiety 下载免费PDF全文
A series of 1,5‐benzothiazepine derivatives bearing quinoline moiety were obtained by 1,5‐benzothiazepine containing 2‐phensulfanyl‐quinoline ( 4a , 4b , 4c ) with equimolar amounts of benzohydroximinoyl chlorides 5 in CH2Cl2 at room temperature. Structures of new compounds were confirmed by elemental analysis, IR, 1H‐NMR, MS, and X‐ray diffraction analysis. 相似文献
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An efficient one-pot, three-component synthesis of 3-pyrrolin-2-ones in aqueous media at room temperature is reported. This reaction provides a green and catalyst-free method for generation of 3-pyrrolin-2-one derivatives in good yields. 相似文献
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为研发新型乙酰胆碱酯酶抑制剂,本文通过碘介导环化反应合成了一系列含1,3,4-噁二唑的喹啉衍生物,并通过熔点和核磁共振确定了其结构。在1 μmol/mL浓度下,对这些衍生物抗乙酰胆碱酯酶活性进行了初步的生物测定。结果表明,化合物4b和4j具有中等的抑制活性,抑制率分别为79.18%和78.46%。初步的构效关系表明,在目标化合物的1,3,4-噁二唑环上引入杂环可以其提高其活性。分子对接研究表明,化合物4b和4j和乙酰胆碱酯酶的催化活性中心部位显著结合。 相似文献