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。
Synthesis of pyrano[2,3-<i>c</i>
]pyrazole derivatives using Fe<sub>3</sub>
O<sub>4</sub>
@SiO<sub>2</sub>
@piperidinium benzene-1,3-disulfonate (Fe<sub>3</sub>
O<sub>4</sub>
@SiO<sub>2</sub>
nanoparticle-supported IL) as a novel, green and heterogeneous catalyst
A simple, green and efficient protocol for the one‐pot four‐component synthesis of pyrano[2,3‐c]pyrazolederivatives produced from reaction between aryl aldehydes, ethyl acetoacetate, malononitrile and hydrazine hydrate in the presence of nano magnetic piperidinium benzene‐1,3‐disulfonate was synthesized in water at 60 °C. The Fe3O4@SiO2 nanoparticle‐supported IL was designed and synthesized. The present
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).