A convenient and environmentally friendly procedure for the synthesis of polyhydroquinolines via a one-pot, four component condensation of different aromatic aldehydes with dimedone, ethyl acetoacetate and ammoniumacetate has been developed. Upon heating at 100 °C, the desired products were produced in good to excellent yields with short reaction times under catalyst- and solvent-free conditions.
Cu(II) Schiff Base Complex as a Highly Efficient Catalyst for the Synthesis of Polyhydroquinoline Derivatives via Hantzsch Condensation in Water
作者:Seyed Vahdat
DOI:10.2174/13862073113169990003
日期:2013.11
In the present study, Cu(II) Schiff-base complex is introduced as a highly efficient and green solid catalyst for
the unsymmetrical Hantzsch condensation through a four-component coupling of various aldehydes, dimedone, ethyl
acetoacetate and ammonium acetate to form polyhydroquinoline derivatives in good to excellent yields. This reaction was
carried out in the presence of 1 mol% of catalysts in water at room temperature. The reusability of the catalysts was
demonstrated by a five-run test. Remarkable features of this new procedure are cleaner reaction profiles, shorter
reactiontimes, simple experimental and work-up procedures.
Synthesis of polyhydroquinoline derivatives via a four-component Hantzsch condensation catalyzed by tin dioxide nanoparticles
作者:Seyed Mohammad VAHDAT、Fereshteh CHEKIN、Mehdi HATAMI、Maryam KHAVARPOUR、Saeed BAGHERY、Ziba ROSHAN-KOUHI
DOI:10.1016/s1872-2067(11)60518-4
日期:2013.4
Tin dioxide (SnO2) nanoparticles efficiently catalyzed unsymmetrical four-component Hantzschcondensations of various aldehydes, dimedone, ethyl acetoacetate, and ammonium acetate to form polyhydroquinoline derivatives in excellent yields. This novel method offers several advantages over the traditional method of synthesizing these compounds, including safety, mild conditions, short reaction times
P-TSA Catalyzed Facile and Efficient Synthesis of Polyhydroquinoline Derivatives through Hantzsch Multi-Component Condensation
作者:Sanjeeva Reddy Cherkupally、Raghu Mekala
DOI:10.1248/cpb.56.1002
日期:——
A facile and efficient synthetic route to polyhydroquinolines has been developed via four-component condensation reactions of aldehydes, dimedone, ethyl acetoacetate and ammonium acetate in the presence of p-toluenesulfonic acid (p-TSA) catalyst in ethanol at ambient temperature throughHantzsch reaction. Simple work-up procedure, environmentally friendly, inexpensive and non-toxic catalyst, shorter
Synthesis, characterization, crystal structure and anticancer activity of tetrahydro-quinolines using silica iodide as a heterogeneous catalyst
作者:K.B. Ramesh、B.M. Omkaramurthy、M. Srinivas
DOI:10.1016/j.molstruc.2020.128790
日期:2020.12
Abstract An efficient synthesis of tetrahydroquinolines using silica iodide as heterogeneous catalyst. Ethyl acetoacetate, dimedone, ammonium acetate with suitable aromatic aldehydes in ethanol was reported. Silica iodide (SiO2–I) acts as an efficient heterogeneous catalyst to afford the products in excellent yield in short reaction duration and reusable catalyst. The synthesized 4 d and 4 h compounds
摘要 以碘化硅为多相催化剂高效合成四氢喹啉。据报道,乙酰乙酸乙酯、二甲酮、乙酸铵与合适的芳香醛在乙醇中。碘化硅(SiO2-I)作为一种高效的多相催化剂,可以在较短的反应时间和可重复使用的催化剂中以优异的产率提供产品。合成的 4 d 和 4 h 化合物通过单晶 X 射线衍射法表征。此外,制备的喹啉衍生物对 HepG2 和 MCF-7 细胞系显示出有效的抗癌活性。进行对接研究以评估合成化合物和标准药物阿霉素与雌激素受体 (ER) 的结合亲和力。