微波辅助“一锅煮”合成香豆素3-羧酸类化合物

以取代水杨醛和丙二酸二乙酯为原料,乙醇为溶剂,以吡咯为碱于140 ℃微波反应20 min,再加入氢氧化钠于120 ℃微波反应10 min,采用“一锅煮”的方法合成了8个香豆素-3-羧酸类化合物,收率可达84.0%~96.6%。本方法具有反应时间短、产率高、操作简便的优点,为香豆素-3-羧酸类化合物提供了一种高效、便捷的实验室合成方法。     

氯化胆碱催化合成香豆素-3-羧酸

香豆素衍生物合成方法的研究与改进已经成为国内外学者的热门研究方向。室温条件下,在水相中以水杨醛和麦氏酸为原料、氯化胆碱为催化剂、乙醇为辅助溶剂,通过Knoevenagal缩合-分子内环化串联反应以88%~96%的产率合成了一系列的香豆素-3-羧酸。该方法拓展了可用于合成香豆素-3-羧酸的催化剂的种类,具有反应条件温和、催化剂廉价易得、底物适用性广、产率较高、后处理简单和产物易于纯化等优点。     

Aqueous Synthesis of N-Phenyl/alkyl-2-quinolinone-3-carboxylic Acids from Coumarin-3-carboxylic Acids

An efficient, ecofriendly aqueous synthesis of aromatic/aliphatic amines with coumarin-3-carboxylic acid in a one pot reaction in a sealed tube or InCl₃/ H₂O in open vessel to afford N-phenyl/alkyl-2-quinolinones is achieved. This method provides high yield of products in shorter time, making it a useful process for the synthesis of structurally diversified 2-quinolinones from corresponding coumarins.     

香豆素-3-羧酸分子印迹聚合物复合膜对底物的结合及渗透选择性质的研究

在光照和引发剂的作用下, 模板分子香豆素-3-羧酸、 功能单体丙烯酰胺和交联剂乙二醇二甲基丙烯酸酯(EDMA)或三甲氧基丙烷三甲基丙烯酸(TRIM)在聚偏氟乙烯(PVDF)微孔滤膜表面聚合形成分子印迹聚合物复合膜. 用高效液相色谱仪测定了分别以TRIM和EDMA为交联剂制备的分子印迹聚合物膜在不同溶剂中对混合底物的结合和渗透选择性. 结果表明, 以TRIM为交联剂的印迹膜对模板分子具有更高的结合和渗透选择性. 另外, 以乙腈或乙腈/水作为溶剂对分子印迹膜所作的实验和讨论有助于为从复杂样品中分离模板分子奠定理论和实验基础.     

Silica Sulfuric Acid: A Versatile and Reusable Catalyst for Synthesis of Coumarin-3-carboxylic Acids in a Solventless System

Synthesis of substituted coumarin-3-carboxylic acid via Knoevenagel condensation of meldrum's acid with ortho-hydroxyaryl aldehydes in solventless system is described.     

N-Methylcarbazole-3-carboxylic Acid and Its Amides

N-Methylcarbazole-3-carboxylic acid was synthesized from N-methyl-2-amino-4-carboxydiphenyl-amine through the corresponding diazo compound by a modified Pschorr procedure. The acid was converted into N-methylcarbazole-3-carbonyl chloride which was treated with amines containing benzo- and aza-crown ether moieties, as well as with 3-(dimethylamino)propylamine, to obtain the respective N-substituted amides.     

1H-吲唑-3-羧酸的合成

综述了1H-吲唑-3-羧酸的合成方法,并评述了其优缺点;同时介绍了作者在寻找其新合成方法中的一些探索。参考文献28篇。     

3-氨基环己基甲酸和cis-3-氨基环己烯基-5-甲酸立体异构体的合成

通过手性胺拆分方法，从3-环己烯基甲酸出发分别合成得到了3-氨基环己基甲酸（ACHC）的四个立体异构体，以及cis-5-氨基-3-环己烯基甲酸（ACHEC）的二个立体异构体。     

Synthesis and Characterization of 3-Phenyl-adamantane-1-carboxylic Acid

Adamantane and its derivatives have been introduced into many drugs for current clinical research and some of them are used tor tlie treatment of neurological disease and/or used as the antiviral agents as well as the agents against type-2 diabetes.Recently,there have been many relevant research reported for developing medicinal chemistry by employing the adamantyl group.In this paper,a new adamantane-based compound (3-phenyl-adamantane-1-carboxylic acid,PACA) was synthesized and characterized by X-ray diffraction(XRD), themiogravimeric analysis(TGA),Fourier transtomi infrared spectroscopy(FTIR),etc.,which should be a beneficial complement or extension to the existing adamantyl-based materials.