CoFe<sub>2</sub>O<sub>4</sub>@SiO<sub>2</sub>‐PA‐CC‐guanidine nanoparticles: A novel, efficient, and recyclable catalyst for the synthesis of 3,5‐disubstituted‐2,6‐dicyanoaniline derivatives
作者:Hedieh Rostami、Lotfi Shiri
DOI:10.1002/aoc.5599
日期:2020.5
synthesis of 3,5‐disubstituted‐2,6‐dicyanoaniline derivatives by CoFe2O4@SiO2‐PA‐CC‐guanidine magnetic nanoparticles (MNPs) was reported. 3,5‐Disubstituted‐2,6‐dicyanoaniline derivatives were synthesized from malononitrile, aldehydes, and β‐nitrostyrene derivatives in good yields. MNPs used for the synthesis of aniline derivatives were easy to recover and reuse. The CoFe2O4@SiO2‐PA‐CC‐guanidine MNPs were
报道了一种通过CoFe 2 O 4 @SiO 2 -PA-CC-胍磁性纳米粒子(MNPs)合成3,5-二取代-2,6-二氰基苯胺衍生物的有效新方法。由丙二腈,醛和β-硝基苯乙烯衍生物合成3,5-二取代-2,6-二氰基苯胺衍生物,收率很高。用于合成苯胺衍生物的MNP易于回收和再利用。CoFe 2 O 4 @SiO 2 -PA-CC-胍MNPs的特征在于傅立叶变换红外光谱,扫描电子显微镜,能量色散X射线光谱,X射线衍射,热重分析和振动样品磁力分析技术。
Nitriles in Organic Synthesis. The Chemical Behavior of [1-(2-Furyl)-ethylidene]- and [1-(2-Thienyl)ethylidene]malononitriles
作者:Mohamed Abdallah El-Maghraby、Kamal Usef Sadek、Maghraby Ali Selim、Mohamed Hilmy Elnagdi
DOI:10.1246/bcsj.61.1375
日期:1988.4
The chemical behavior of [1-(2-furyl)ethylidene]- and [1-(2-thienyl)ethylidene]malononitriles 1a and b toward electrophilic reagents, active methylene reagents and (arylmethylene)malononitriles is described.
4,6-Diaryl-2-(pyrrolidin-1-yl)-nicotinonitriles 2a-k and 3-amino-2,4-dicyano-5-aryl-biphenyls 3a-c were synthesized from 1,3-diaryl-prop-2-en-1-ones 1a-k and malononitrile by a convenient one-pot method. Likewise, the reaction of aromatic aldehydes with malononitrile afforded 6-amino-4-aryl-2-(pyrrolidin-1-yl)-pyridine-3,5-dicarbonitriles 6a-f. The reaction of mesityl oxide with malononitrile gave 5-amino-7-(pyrrolidin-1-yl)-2,4,4-trimethyl-1,4-dihydro-1,6-naphthyridine-8-carbonitrile 8. The NLO studies of the pyridinedinitrile derivatives 6a, b, f showed a high value while that of nicotinonitrile 2b was weak. (C) 2003 Elsevier Science Ltd. All rights reserved.