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).
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.
Gold(III) chloride promoted addition of electron-rich heteroaromatic compounds to the CC and CO bonds of enals
作者:Vijay Nair、N. Vidya、K.G. Abhilash
DOI:10.1016/j.tetlet.2006.02.130
日期:2006.4
Electron-rich heteroaromatic compounds react with α,β-enals in the presence of gold(III) chloride to afford bis-addition products in high yields.
Efficient Condensation Reactions of Electron-Rich Arenes with Aldehydes and Enals Promoted by Gold(III) Chloride: Practical Synthesis of Triaryl- and Triheteroarylmethanes and Related Compounds
作者:Vijay Nair、N. Vidya、K. Abhilash
DOI:10.1055/s-2006-950209
日期:2006.11
Electron-rich arenes undergo gold(III) catalyzed condensation reactions with aldehydes and enals to afford bis- and tris-addition products, respectively, in high yields.