Zirconium triflate-catalyzed reactions of indole, 1-methylindole, and pyrrole with α,β-unsaturated ketone
作者:Min Shi、Shi-Cong Cui、Qing-Jiang Li
DOI:10.1016/j.tet.2004.05.087
日期:2004.7
The Zr(OTf)4-catalyzed reaction of indole, 1-methylindole or pyrrole with α,β-unsaturated ketone generated the corresponding trisindolyl-, tris(1-methylindolyl-), and trispyrrolylalkanes in moderate to high yields in the mixed solvent EtOH/H2O.
Zr(OTf)4催化吲哚,1-甲基吲哚或吡咯与α,β-不饱和酮的反应,在混合溶剂EtOH中以中等至高收率生成了相应的三吲哚基-,三(1-甲基吲哚基-)和三吡咯烷基烷烃/ H 2 O.
In situ generation of Iron(<scp>iii</scp>) dodecyl sulfate as Lewis acid-surfactant catalyst for synthesis of bis-indolyl, tris-indolyl, Di(bis-indolyl), Tri(bis-indolyl), tetra(bis-indolyl)methanes and 3-alkylated indole compounds in water
Iron(III) dodecyl sulfate as Lewis acid-surfactant catalyst was prepared in situ and effectively used in the synthesis of bis(indolyl)methanes and Michael reactions of indoles with α,β-unsaturated carbonyl compounds in water. Also, this method was used for the synthesis of 1,1,3-tri-indolyl compounds, producing good to excellent yield at room temperature.
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 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).