Synthesis and Calcium Modulatory Activity of 3-Alkyloxy- carbonyl-4-(disubstituted)aryl-5-oxo-1,4,5,6,7,8-hexa-hydroquinoline Derivatives
作者:Rahime Simsek、Gökçe S. Öztürk、I. Mert Vural、Miyase G. Gündüz、Yusuf Sarıoǧlu、Cihat Safak
DOI:10.1002/ardp.200700087
日期:——
In this study, twelve hexahydroquinoline derivatives which are condensed analogs of the 1,4‐DHP molecule were synthesized and evaluated for their calcium‐antagonistic activity. The results indicated that all compounds and nifedipine produced concentration‐dependent relaxation in rabbit gastric fundus smooth muscle strips. The relaxant effects of the compounds on the tissues were expressed as percentage
Nano-ferrous ferric oxide (nano-Fe<sub>3</sub>O<sub>4</sub>): magnetite catalytic system for the one-pot four-component tandem imine/enamine formation-Knoevenagel–Michael-cyclocondensation reaction of dimedone, aldehydes, β-ketoesters and ammonium acetate under green media
In this work, magnetite nano-Fe3O4 was applied as a green, efficient, heterogeneous and reusable catalytic system for the atomic economic preparation of hexahydroquinolines via the one-pot multi-component reaction of aryl aldehydes, dimedone (5,5-dimethylcyclohexane-1,3-dione), β-ketoesters and ammonium acetate at 50 °C under mild and solvent-free conditions. The catalyst was synthesized and characterized by several techniques including Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), vibrating sample magnetometry (VSM) and transmission electron microscopy (TEM). Also, optimization of the reaction conditions was investigated using the response surface method Central Composite Design (CCD)}.
Catalytic Applications of Nano-Fe-[Phenyl-Salicylaldimine-Methylpyranopyrazole]Cl<sub>2</sub>as a Schiff Base Complex and Nanostructured Catalyst for the Synthesis of Hexahydroquinolines
reaction of benzaldehyde with ethyl acetoacetate, malononitrile, and hydrazine hydrate using FeCl2, a pyranopyrazole derivative was synthesized and then reacted with salicylaldehyde to give nano‐Fe‐[phenyl‐salicylaldimine‐methylpyranopyrazole]Cl2 (nano‐[Fe‐PSMP]Cl2). The prepared nano‐Schiff base complex was successfully used as an efficient catalyst for the synthesis of hexahydroquinolines.
Thermally reversible solidification of novel ionic liquid [im]HSO<sub>4</sub> by self-nucleated rapid crystallization: investigations of ionic conductivity, thermal properties, and catalytic activity
作者:Michał Bielejewski、Mahdi Ghorbani、Mohammad Ali Zolfigol、Jadwiga Tritt-Goc、Soheila Noura、Mahdi Narimani、Mohsen Oftadeh
DOI:10.1039/c6ra21488f
日期:——
of natural habitats. Among these materials are ionicliquids, the new generation of which has contributed substantially to the rapid development of green chemistry. In this paper, we report the synthesis and characterization of an ionicliquid of imidazolium hydrogen sulphate ([im]HSO4), which displays multifunctional properties. The [im]HSO4 ionicliquid can be used either as an efficient catalyst in
近年来,对环境的日益关注引发了对符合自然栖息地保护标准的新材料的搜寻。在这些材料中有离子液体,其新一代已为绿色化学的快速发展做出了重要贡献。在本文中,我们报告了咪唑硫酸氢盐([im] HSO 4)离子液体的合成和表征,该液体具有多功能特性。[im] HSO 4离子液体既可以用作在绿色条件下制备六氢喹啉的有效催化剂,也可以用作热可逆的离子凝胶。对其催化性能的研究表明,[im] HSO 4可以重复使用至少四次而没有明显的活性损失,并且相对于分离的纯产物,反应产率在92%至98%的范围内。另一方面,由[im] HSO 4形成的离子凝胶显示出高离子电导率(固相高达25 mS cm -1)和大约54°C的熔点。发现负责凝胶化的过程是通过自成核结晶而固化的。[im] HSO 4的结构使用FT-IR,1 H NMR,13 C NMR,XRD,SEM,TGA和DTA进行了全面表征。从应用角度来看重要的物理
Novel ionic liquid [2-Eim] HSO<sub>4</sub>as a dual catalytic-solvent system for preparation of hexahydroquinolines under green conditions
作者:M. Ghorbani、S. Noura、M. Oftadeh、E. gholami、M. A. Zolfigol
DOI:10.1039/c5ra09666a
日期:——
A novel Brønsted acidic ionic liquid 2-ethylimidazolium hydrogen sulfate, [2-Eim] HSO4, was synthesized.