1614-06-8Relevant articles and documents
Direct Oxidative Conversion of Benzoyl Chlorides to 2-Imidazoles Using Heteropolyacids
Sadjadi, Samaheh,Heravi, Majid M.,Poormohammad, Nargess,Oskooie, Hossein A.,Beheshtiha, Yahya. Sh.,Bamoharram, Fatemeh F.
, p. 3119 - 3125 (2009)
The reaction of benzoyl chlorides with ethylenediamine in the presence of catalytic amounts of Keggin-type heteropolyacids led to oxidative conversion of benzoyl chlorides to the corresponding 2-imidazoles in good yields.
Highly efficient protocol for the aromatic compounds nitration catalyzed by magnetically recyclable core/shell nanocomposite
Maleki, Ali,Aghaei, Morteza,Paydar, Reza
, p. 485 - 490 (2017/01/10)
An efficient protocol for the nitration of aromatic compounds in the presence of a catalytic amount of sulfuric acid-functionalized silica-based magnetic core/shell nanocomposite was reported. The designed products were obtained in high yields in relatively short reaction times at room temperature under solvent-free conditions. The nanocatalyst was simply recovered from the reaction mixture by using an external magnet and efficiently reused for several times. The characterization of particle size, morphology and elemental analysis of the nanocatalyst were provided by scanning electron microscopy, transmission electron microscopy and energy-dispersive X-ray spectroscopy analyses, respectively.
Fe3O4/SiO2/(CH2)3N+Me3Br3- core-shell nanoparticles: A novel catalyst for the solvent-free synthesis of five- and six-membered heterocycles
Farrokhi, Azita,Ghodrati, Keivan,Yavari, Issa
, p. 41 - 46 (2015/02/19)
Functionalized magnetic core-shell nanoparticles [Fe3O4/SiO2/(CH2)3N+Me3Br3-] are prepared by co-precipitation method, characterized by transmission electron microscopy, FT-IR, X-ray diffraction, and vibrating sample magnetometer. The catalytic activity of these nanoparticles was tested in the syntheses of imidazole, benzothiazole, and perimidine derivatives, under solvent-free conditions. The catalyst was readily recycled by the use of an external magnetic field and could be reused five times without significant loss of activity or mass.