Synthesis and application of modified silica sulfuric acid as a solid acid heterogeneous catalyst in Michael addition reactions
作者:Mohammad Ali Zolfigol、Hojat Veisi、Farajollah Mohanazadeh、Alireza Sedrpoushan
DOI:10.1002/jhet.659
日期:2011.7
Modified silicasulfuricacid (MSSA) as a new type of silicasulfuricacid was prepared and effectively used in the conjugate addition of indole, pyrrole, and thiols with Michael acceptors under mild conditions at room temperature. Also, MSSA was used as a catalyst for the synthesis of 1,1,3‐tri‐indolyl compounds in good to excellent yield at room temperature. J. Heterocyclic Chem., (2011).
AlCl3 as a powerful catalyst for the one-pot preparation of 1,1,3-triheteroaryl compounds
作者:Morteza Shiri、Mohammad Ali Zolfigol、Roya Ayazi-Nasrabadi
DOI:10.1016/j.tetlet.2009.10.127
日期:2010.1
A general and efficient procedure for the synthesis of 1,1,3-triheteroaryl compounds in good to excellent yield at room temperature is developed. The reaction proceeds via mixed Michael and Friedel-Crafts reactions of alpha,beta-enals or alpha,beta-enones and indoles, 2-methylfuran or 2-methylthiophene in the presence of a catalytic amount of AlCl3. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis of the first magnetic nanoparticles with a thiourea dioxide-based sulfonic acid tag: application in the one-pot synthesis of 1,1,3-tri(1H-indol-3-yl) alkanes under mild and green conditions
作者:Mohammad Ali Zolfigol、Roya Ayazi-Nasrabadi
DOI:10.1039/c6ra11620e
日期:——
A novel and recyclable thiourea dioxide-based magnetic nano particles with sulfonic acid tag Fe3O4@SiO2@(CH2)3-thiourea dioxide-SO3H/HCl} was described. The described catalyst was fully characterized by Fourier transform infrared spectroscopy (FTIR), X-ray...