Efficient reduction of graphene oxide to graphene nanosheets using a silica-based ionic liquid: synthesis, characterization and catalytic properties of IMD-Si/FeCl4−@GNS
Efficient reduction of graphene oxide to graphene nanosheets using a silica-based ionic liquid: synthesis, characterization and catalytic properties of IMD-Si/FeCl4−@GNS
An efficient and cost-effective procedure for preparation of Fe3O4 nanoparticles and supported Brønsted acidicionicliquid 1-methyl-3-(3-trimethoxysilylpropyl)imidazolium hydrogensulfate (Fe3O4-IL-HSO4) as a Brønsted acidicionicliquid and efficient magnetic catalyst is described, together with its use for one-pot synthesis of polysubstituted quinolines through Friedländer condensation of 2-aminoaryl
制备Fe 3 O 4纳米颗粒和布朗斯台德酸性离子液体1-甲基-3-(3-三甲氧基甲硅烷基丙基)咪唑硫酸氢盐(Fe 3 O 4 -IL-HSO 4)的有效方法,且成本低廉描述了一种离子液体和高效的磁性催化剂,以及在无溶剂条件下通过2-氨基芳基酮与1,3-二羰基化合物的Friedländer缩合反应一锅合成多取代喹啉的方法。该方法最值得注意的方面是它的环境友好性,操作简便性,在短反应时间内的优异收率,容易的产物分离以及催化剂的极好的可重复使用性。
Imidazole functionalized magnetic Fe3O4 nanoparticles as a novel heterogeneous and efficient catalyst for synthesis of dihydropyrimidinones by Biginelli reaction
catalytic amounts of imidazole functionalized on magneticnanoparticles as an efficient, non-toxic, reusable, and easily available catalyst under solvent-free conditions at 80 °C. Compared to the classical Biginelli reaction, this new method consistently has the advantage of excellent yields, short reaction times, and methodological simplicity. Furthermore, the nanomagnetic catalyst could be readily handled