A Simple Method for the Preparation of 2-Amino-4-aryl-3-cyanopyridines by the Condensation of Malononitrile with Aromatic Aldehydes and Alkyl Ketones in the Presence of Ammonium Acetate
Sulfonic acid-functionalized graphitic carbon nitride composite: a novel and reusable catalyst for the one-pot synthesis of polysubstituted pyridine in water under sonication
作者:Mahtab Edrisi、Najmedin Azizi
DOI:10.1007/s13738-019-01820-1
日期:2020.4
multicomponent reaction of aromatic aldehydes with acyclic and cyclic ketones, malononitrile and ammonium acetate was afforded the pyridine derivatives in good-to-excellent yields. In view of eco-friendly and economic considerations, this approach offers a straightforward and convenient route to generate biologically active pyridine derivative in an environmentally friendly manner. The Fe3O4@g-C3N4-SO3H
作为一种有趣的可持续性软纳米材料,石墨碳氮化物因其独特的电子结构和化学稳定性而受到了广泛的学科关注。在极性和强酸性磺化磁性石墨氮化碳(Fe 3 O 4 @gC 3 N 4 -SO 3)存在下的一系列多取代吡啶的超声辅助制备H)在较温和较快的反应条件下在水中作为绿色介质的报道。芳族醛与无环和环状酮,丙二腈和乙酸铵的一锅顺序多组分反应以良好或优异的产率得到了吡啶衍生物。考虑到生态友好和经济考虑,该方法提供了以环境友好的方式产生生物活性吡啶衍生物的直接且方便的途径。Fe 3 O 4 @gC 3 N 4 -SO 3 H在几个反应组上显示出高稳定性和可重复使用性,而没有明显的活性损失,因此,该方法是一种廉价且环保的方法。
An efficient protocol for the one-pot multicomponent synthesis of polysubstituted pyridines by using a biopolymer-based magnetic nanocomposite
作者:Ali Maleki、Abbas Ali Jafari、Somayeh Yousefi、Vahid Eskandarpour
DOI:10.1016/j.crci.2015.09.002
日期:2015.12
Résumé A biopolymer cellulose-based magnetic composite nanocatalyst was prepared and characterized by using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). Then, it was used efficiently in the multicomponent synthesis of polysubstituted pyridines under mild reaction conditions and using an easy work-up procedure at room temperature in ethanol. The nanocatalyst can be recovered easily and reused several times without significant loss of catalytic activity. Supplementary Materials: Supplementary materials for this article are supplied as separate files: mmc1.doc mmc2.zip mmc3.doc mmc4.doc
A novel inorganic–organic nanohybrid material SBA-15@triazine/H5PW10V2O40 as efficient catalyst for the one-pot multicomponent synthesis of multisubstituted pyridines
inorganic–organic nanohybrid material SBA-15@triazine/H5PW10V2O40 (SBA-15@ADMPT/H5PW10V2O40) was prepared and used as an efficient, eco-friendly, and highly recyclable catalyst for the one-potmulticomponentsynthesis of multisubstituted pyridines from the reaction of aldehydes, cyclic ketones, malononitrile, and ammonium acetate with good to excellent yields (77–97%). The nanohybrid catalyst was prepared by the chemical
一种新颖的无机-有机纳米杂化材料SBA-15 @三嗪/ H 5 PW 10 V 2 ö 40(SBA-15 @ ADMPT / H 5 PW 10 V 2 ö 40)制备并用作有效的,环境友好的,并一种高度可回收的催化剂,用于醛,环酮,丙二腈和乙酸铵的反应,可一锅多组分合成多取代的吡啶,产率好至极好(77-97%)。通过Keggin杂多酸H 5 PW 10 V 2 O 40的化学锚固来制备纳米杂化催化剂。用2-APTS -4,6-双(3,5-二甲基-1H-吡唑-1-基)-1,3,5-三嗪(ADMPT)接头修饰的SBA-15中孔二氧化硅表面上。FT-IR,XRD,SEM,TEM,BET,EDX和DTA-TGA光谱等标准表征数据证实杂多酸H 5 PW 10 V 2 O 40在固定在用ADMPT改性的SBA-15中孔二氧化硅上之后,其完全分散在固体载体的表面上并且保留了其结构。此外,纳米催化剂可
A Simple Method for the Preparation of 2-Amino-4-aryl-3-cyanopyridines by the Condensation of Malononitrile with Aromatic Aldehydes and Alkyl Ketones in the Presence of Ammonium Acetate