Preyssler heteropolyacid supported on silica coated NiFe2O4 nanoparticles for the catalytic synthesis of bis(dihydropyrimidinone)benzene and 3,4-dihydropyrimidin-2(1H)-ones
作者:Hossein Eshghi、Ali Javid、Amir Khojastehnezhad、Farid Moeinpour、Fatemeh F. Bamoharram、Mehdi Bakavoli、Masoud Mirzaei
DOI:10.1016/s1872-2067(14)60265-5
日期:2015.3
Abstract A novel magnetic acidic catalyst comprising Preyssler (H 14 [NaP 5 W 30 O 110 ]) heteropoly acid supported on silica coated nickel ferrite nanoparticles (NiFe 2 O 4 @SiO 2 ) was prepared. The catalyst was characterized by Fourier transform infrared, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, energy dispersive spectrum, VSM and particle size neasurement
摘要 制备了一种新型磁性酸性催化剂,其包含负载在二氧化硅包覆的铁氧体镍纳米颗粒(NiFe 2 O 4 @SiO 2 )上的 Preyssler (H 14 [NaP 5 W 30 O 110 ]) 杂多酸。通过傅里叶变换红外光谱、扫描电镜、透射电镜、X射线衍射、能谱、VSM和粒度测定对催化剂进行了表征。通过Biginelli反应研究了其在合成双(二氢嘧啶酮)苯和3,4-二氢嘧啶-2(1 H)-酮衍生物中的催化活性。使用催化剂,反应在不到 1 小时内发生,产率非常好。更重要的是,催化剂很容易通过外部磁铁从反应混合物中分离出来,并且可以重复使用至少五次而不会降低活性。
Synthesis of 4,4′-(1,4-Phenylene)di-pyridine and-pyrimidine Derivatives†
作者:Rafat Mohamed Shaker、Fathy Fahim Abdel-Latif
DOI:10.1039/a700538e
日期:——
The preparation and structural characterization of4,4â²-(1,4-phenylene)di-pyridine and -pyrimidine derivativesare described.
描述了4,4′-(1,4-苯基)二吡啶和二嘧啶衍生物的制备和结构表征。
Microwave-Assisted Solvent-Free Synthesis of Bis(dihydropyrimidinone)benzenes and Evaluation of their Cytotoxic Activity
作者:Javad Azizian、Mohammad K. Mohammadi、Omidreza Firuzi、Behrooz Mirza、Ramin Miri
DOI:10.1111/j.1747-0285.2009.00937.x
日期:2010.4
An effective one‐pot synthesis of bis(dihydropyrimidinonoe)benzenes using chlorotrimethylsilane (TMSCl) through Biginelli condensation reaction of terephthalic aldehyde, 1,3‐dicarbonyl compounds and (thio)urea or guanidine under microwave irradiation conditions is described. Excellent yields of the products and simple work‐up are attractive features of this green protocol. Then, the cytotoxic activities
Mirza, Behrooz; Sargordan, Mohsen; Fazaeli, Reza, Asian Journal of Chemistry, 2012, vol. 24, # 4, p. 1421 - 1424
作者:Mirza, Behrooz、Sargordan, Mohsen、Fazaeli, Reza
DOI:——
日期:——
One pot synthesis of bis (dihydropyrimidinone) and tetrahydro-4H-chromenes derivatives using Ag<sub>2</sub>O/GO/TiO<sub>2</sub> composite nanostructure
simple and efficient synthesis reaction was used to prepare Bis (dihydropyrimidinone) derivatives through Biginelli condensation reaction of terephthalic aldehyde, 1,3-dicarbonyl compounds and (thio) urea or guanidine and tetrahydro-4H-chromenes via one pot condensation of aromatic aldehydes, malononitrile, and dimedone with Ag2O/GO/TiO2 composite nanostructures as the catalyst. The structural functionalities