2-甲基吲哚 、 2-甲基苯甲醛 在
tungsto-vanadophosphoric acid on the surface of pyridine modified Fe3O4 nanoparticle 作用下,
以
neat (no solvent, solid phase) 为溶剂,
反应 0.33h,
以65%的产率得到
参考文献:
名称:
在无溶剂条件下催化制备双(吲哚基)芳基甲烷的磁性无机-有机杂化纳米材料:H 5 PW 10 V 2 O 40 /吡啶-Fe 3 O 4纳米粒子的制备和表征
摘要:
磁性可分离的无机-有机杂化材料H 5 PW 10 V 2 O 40 /吡啶-Fe 3 O 4(HPA / TPI-Fe 3 O 4)纳米颗粒为通过以下方法合成取代的双(吲哚基)甲烷提供了一种有效而经济的途径在无溶剂条件下用各种醛和酮对吲哚进行亲电取代,在不到30分钟的时间内即可获得优异的收率。通过将H 5 PW 10 V 2 O 40化学固定在Fe 3 O 4上来制备该催化剂。通过使用N- [3-(三乙氧基甲硅烷基)丙基]异烟酰胺(TPI)接头制备纳米颗粒。高催化活性和使用外部磁场易于回收是该新型催化系统的其他环保特性。催化剂被循环至少八次而没有明显的催化活性损失。用于HPA / TPI-Fe 3 O 4的表征技术(如XRD,SEM和FTIR)证明,保留了吡啶改性的Fe 3 O 4纳米颗粒表面上的钨-钒磷酸的Keggin结构。
Catalyst-free visible-light-induced condensation to synthesize bis(indolyl)methanes and biological activity evaluation of them as potent human carboxylesterase 2 inhibitors
作者:Yi-Shu Zhao、Hong-Li Ruan、Xiu-Yang Wang、Chen Chen、Pei-Fang Song、Cheng-Wei Lü、Li-Wei Zou
DOI:10.1039/c9ra08593a
日期:——
A mild strategy for visible-light-induced synthesis of bis(indolyl)methanes was developed using aromatic aldehydes and indole as substrates. This reaction could be performed at room temperature under catalyst- and additive-free conditions to synthesize a series of bis(indolyl)methanes in good to excellent yields. In addition, all synthesized bis(indolyl)methanes together with β-substituted indole derivatives