Synthesis and application of melamine-based nano catalyst with phosphonic acid tags in the synthesis of (3´-indolyl)pyrazolo[3,4-b]pyridines via vinylogous anomeric based oxidation
作者:Javad Afsar、Mohammad Ali Zolfigol、Ardeshir Khazaei、Mahmoud Zarei、Yanlong Gu、Diego A. Alonso、Abbas Khoshnood
DOI:10.1016/j.mcat.2019.110666
日期:2020.2
organo solid acid with phosphorus acid tags was designed, synthesized and fully characterized. The catalytic activity of the resulted melamine hexakis(methylene)hexakis(phosphonic acid) (MHMHPA) as a heterogeneous catalyst was also investigated via an one-pot reaction between cyanoacetylindole, 3-methyl-1-phenyl-1H-pyrazol-5-amine, and an aromatic aldehyde. (3´-Indolyl)pyrazolo[3,4-b]pyridines were produced
设计,合成并充分表征了一种新型的具有磷酸标签的基于三聚氰胺的纳米结构有机固体酸。还通过氰基乙酰吲哚,3-甲基-1-苯基-1 H-吡唑-5-之间的一锅反应研究了所得三聚氰胺六(亚甲基)六(膦酸)(MHMHPA)作为多相催化剂的催化活性。胺和芳香醛。(3′-吲哚基)吡唑并[3,4- b ]吡啶在回流的乙醇中以高收率生产。固体催化剂可以容易地回收和再利用而不会显着损失其催化活性。