一种简单,绿色,高效的方案,用于在纳米磁性哌啶苯存在下,芳基醛,乙酰乙酸乙酯,丙二腈和水合肼之间反应生成的吡喃并[2,3- c ]吡唑衍生物的一锅四组分合成方法。1,3-二磺酸盐是在60°C的水中合成的。设计并合成了Fe 3 O 4 @SiO 2纳米负载的IL。本发明方法具有反应清洁,反应时间短,收率高至优异,易于纯化,催化剂易于回收等优点。
Cu(<scp>ii</scp>) immobilized on poly(guanidine-sulfonamide)-functionalized Bentonite@MgFe<sub>2</sub>O<sub>4</sub>: a novel magnetic nanocatalyst for the synthesis of 1,4-dihydropyrano[2,3-<i>c</i>]pyrazole
In this paper, we aim at synthesizing a new nanocomposite material in which bentonite acts as a nucleation site for MgFe2O4nanoparticles precipitation in the attendance of an external magnetic field (MgFe2O4@Bentonite).