Poly N,N-dimethylaniline-formaldehyde supported on silica-coated magnetic nanoparticles: a novel and retrievable catalyst for green synthesis of 2-amino-3-cyanopyridines
作者:Sajad Asadbegi、Mohammad Ali Bodaghifard、Akbar Mobinikhaledi
DOI:10.1007/s11164-017-3200-4
日期:2020.3
Preparation and application of novel and reusable magneticnanoparticles with poly N,N-dimethylaniline-formaldehyde support as a heterogeneous basic catalyst have been described. The reported catalyst was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction patterns, transmission electron microscopy, energy dispersive X-ray spectroscopy, thermogravimetric
Facile microwave-assisted preparation of an ester-based cationic gemini surfactant for the improved micellar synthesis of aminocyanopyridines
作者:Fatemeh Tamaddon、Seyd-Ehsan Tadayonfar
DOI:10.1016/j.molstruc.2020.127728
日期:2020.5
Abstract In this work, a diester cationicgeminisurfactant (DCGS) was prepared from the reaction of N,N-dimethyldodecylamine with the microwave (MW)-assisted synthesized spacer ethane-1,2-diyl bis(2-chloroacetate) (EDBC) by the three-component reaction of ethyleneglycol with chloroacetic acid (2 equiv.) under MW-irradiation. The structure of the spacer EDBC and surfactant DCGS were evaluated by 1H NMR
Experimental and theoretical studies of the nanostructured {Fe<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub>@(CH<sub>2</sub>)<sub>3</sub>Im}C(CN)<sub>3</sub>catalyst for 2-amino-3-cyanopyridine preparation<i>via</i>an anomeric based oxidation
作者:Mohammad Ali Zolfigol、Mahya Kiafar、Meysam Yarie、Avat(Arman) Taherpour、Mahdi Saeidi-Rad
DOI:10.1039/c6ra12299j
日期:——
2-Amino-4,6-diphenylnicotinonitriles were prepared by using Fe3O4@SiO2@(CH2)3Im}C(CN)3 as a nanostructured catalyst with an ionic liquid tag under solvent free and benign conditions. Experimental evidence and theoretical studies confirmed that the final step of the synthetic pathway proceeded via an anomeric based oxidation mechanism. A good range of aromatic aldehydes were condensed with acetophenone
以Fe 3 O 4 @SiO 2 @(CH 2)3 Im} C(CN)3作为具有离子液体标签的纳米结构催化剂,在无溶剂和良性条件下,制备了2-氨基-4,6-二苯基烟腈。实验证据和理论研究证实,合成途径的最后一步是通过基于异头物的氧化机理进行的。一系列芳香醛与苯乙酮衍生物,丙二腈和乙酸铵缩合,从而在较短的反应时间内即可获得相应的产物,并且产率高至高。
Fe<sub>3</sub>O<sub>4</sub>@TiO<sub>2</sub>@O<sub>2</sub>PO<sub>2</sub>(CH<sub>2</sub>)NHSO<sub>3</sub>H as a novel nanomagnetic catalyst: Application to the preparation of 2-amino-4,6-diphenylnicotinonitriles via anomeric-based oxidation
作者:Mohammad Ali Zolfigol、Meysam Yarie
DOI:10.1002/aoc.3598
日期:2017.5
A new, green and reusable nanomagnetic heterogeneous catalyst, namely Fe3O4@TiO2@O2PO2(CH2)NHSO3H, was synthesized and fully characterized using suitable techniques such as infrared spectroscopy, X‐ray diffraction, scanning and transmission electron microscopies, thermogravimetry, vibrating sample magnetometry and energy‐dispersive X‐ray spectroscopy. The applicability of the constructed heterogeneous
一种新型的绿色可重复使用的纳米磁性非均相催化剂,即Fe 3 O 4 @TiO 2 @O 2 PO 2(CH 2)NHSO 3使用合适的技术合成和完全表征了H,例如红外光谱,X射线衍射,扫描和透射电子显微镜,热重分析,振动样品磁力分析和能量分散X射线光谱。在多种芳族醛,苯乙酮衍生物,丙二腈和乙酸铵的反应下,成功地探索了构造的异质核-壳催化剂作为促进剂的适用性,用于合成2-氨基-4,6-二苯基烟腈衍生物。在无溶剂条件下,以较短的反应时间以高到高的产率获得了所需的产物。在合成途径的最后一步,建议的机理为产物提供了基于异头的氧化途径。
Application of salicylic acid as an eco‐friendly and efficient catalyst for the synthesis of 2,4,6‐triaryl pyridine, 2‐amino‐3‐cyanopyridine, and polyhydroquinoline derivatives
作者:Majid Roozifar、Nourallah Hazeri、Homayoun Faroughi Niya
DOI:10.1002/jhet.4242
日期:2021.5
In this study, three eco‐friendly, efficient, and convenient protocols have been reported for one‐pot synthesis of 2,4,6‐triaryl pyridine, 2‐amino‐3‐cyanopyridine, and polyhydroquinoline derivatives using salicylic acid as a catalyst under solvent‐free condition. The reported protocols offer several significant advantages such as the application of a nontoxic, neutral, and cheap catalyst, environmentally