Facile one-pot four component synthesis of pyrido[2,3-d:6,5-d′]dipyrimidines catalyzed by CuFe 2 O 4 magnetic nanoparticles in water
作者:Hossein Naeimi、Asieh Didar
DOI:10.1016/j.molstruc.2017.02.044
日期:2017.6
Abstract A simple, efficient and green method for the synthesis of pyrido[2,3-d:6,5-d′]dipyrimidinederivatives via one-pot four-component reaction of aromatic aldehyde, 2-thiobarbituric acid, ammonium acetate in the presence of catalytic amount of a magnetically heterogeneous catalyst has been developed. This protocol includes some important advantages such as; high to excellent product yields, high
One‐pot synthesis of pyrido[2,3‐d:5,6‐d′]dipyrimidines using CoFe
<sub>2</sub>
O
<sub>4</sub>
@SiO
<sub>2</sub>
‐PA‐CC‐guanidine‐SA magnetic nanoparticles in water
作者:Hedieh Rostami、Lotfi Shiri
DOI:10.1002/aoc.6293
日期:2021.10
In this study, the synthesis of pyrido[2,3‐d:5,6‐d′]dipyrimidines using CoFe2O4@SiO2‐PA‐CC‐guanidine‐SA magnetic nanoparticles with excellent yields has been reported. Pyrido[2,3‐d:5,6‐d′]dipyrimidines were synthesized from the four‐component reaction of barbituric acid derivatives, benzaldehyde derivatives and ammonium acetate in water at room temperature. The synthesized catalyst was identified using Fourier‐transform infrared spectroscopy (FT‐IR), scanning electron microscopy (SEM), energy‐dispersive X‐ray spectroscopy (EDX), X‐ray powder diffraction (XRD), thermogravimetric analysis (TGA) and vibrating sample magnetometer (VSM) techniques.