Synthesis and biological evaluation of new series 1,4-dihydropyridines
作者:Ramin Ghorbani-Vaghei、Seyedeh Mina Malaekehpoor、Parisa Hasanein、Roya Karamyan、Mostafa Asadbegy
DOI:10.1007/s11164-015-2310-0
日期:2016.5
Abstract N , N , N ′, N ′-Tetrachlorobenzene-1,3-disulfonamide and poly( N , N ′-dichloro- N -ethyl-benzene-1,3-disulfonamide) are new catalysts promoted by one-pot, facile and four-component synthesis of new substituted 1,4-dihydropyridine derivatives from the reaction of ammonium acetate, aldehydes and various 1,3-dicarbonyl compounds with good to high yields at room temperature under mild conditions
摘要 N , N , N ', N'- 四氯苯-1,3-二磺酰胺和聚( N , N'- 二氯 -N -乙基-苯-1,3-二磺酰胺)是通过乙酸铵,醛和各种1,3-二羰基的反应通过一锅,简便和四组分合成新的取代的1,4-二氢吡啶衍生物而开发的新型催化剂在室温和温和条件下具有良好到高收率的化合物。评价所有合成的化合物的抗菌和抗氧化活性。确定了对四种革兰氏阳性和阴性细菌的抗菌活性,并通过2,2-二苯基-1-吡啶并肼基自由基清除作用评估了抗氧化活性。生物测定结果表明,合成的1,4-二氢吡啶衍生物具有有效的抗氧化和抗菌作用。 图形摘要 新系列二氢吡啶的合成和生物学评价。
Polystyrene-Supported p-Toluenesulfonic Acid: A New, Highly Efficient, and Recyclable Catalyst for the Synthesis of Hydropyridine Derivatives under Solvent-Free Conditions
作者:Yeon Jeong、Mudumala Reddy
DOI:10.1055/s-0032-1317670
日期:——
simple one-pot condensation reaction of dimidine, active methylene compounds with aldehydes, and ammonium acetate in the presence of polystyrene-supported p -toluenesulfonic acid as a highlyactive and reusableheterogeneous acid catalyst under solvent-free conditions at 60 °C. This new protocol has the advantages of easy availability, stability, reusability, and eco-friendliness of the catalyst, high
通过二脒、活性亚甲基化合物与醛类和乙酸铵在聚苯乙烯负载的对甲苯磺酸作为高活性和高活性的存在下,通过简单的一锅缩合反应开发了一种环境友好的制备氢吡啶衍生物的新方法。在 60 °C 无溶剂条件下可重复使用的多相酸催化剂。这种新方案具有催化剂的易得性、稳定性、可重复使用性和生态友好性、高到极好的收率、简单易行的实验后处理程序等优点。
One-pot multi-component synthesis of polyhydroquinolines at ambient temperature
作者:K.A. Undale、T.S. Shaikh、D.S. Gaikwad、D.M. Pore
DOI:10.1016/j.crci.2010.09.009
日期:2011.5
Résumé An efficient and eco-friendly one-pot synthesis of polyhydroquinolines at ambient temperature from the multi-component reaction of aldehyde, 1,3-diketone, β-keto ester and ammonium acetate in ethanol medium is described. The probable mechanism of transformation is suggested. The features of this procedure are mild reaction conditions, no need of external catalyst, good yields and the operational simplicity at ambient temperature.
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