Nafion-H®: A recyclable and diastereoselective solid acid catalyst for three-component mannich reaction
作者:Yang Suling、Li Gang、Long Yunling
DOI:10.1134/s0023158412060079
日期:2012.11
One-pot, three-componentMannichreactions of ketones, aldehydes and amines are efficiently catalyzed by heterogeneous Nafion-H® ambient temperature to give the corresponding β-amino ketones compounds in good to excellent yields. The catalyst can be easily recovered and reused without any decrease of activity for at least four times. Diastereoselective products can be obtained in Mannichreaction of aliphatic
Aluminium dodecatungstophosphate (AlPW12O40)—An efficient catalyst for three-component Mannich reaction in water
作者:Gang Li、Ruiling Long、Suling Yang、Liping Zhang
DOI:10.1134/s0023158411040045
日期:2011.7
One-pot, three-component Mannich reactions of ketones, aldehydes and amines were efficiently catalyzed by AlPW12O40 in water at ambient temperature to give the corresponding beta-amino ketones in good to excellent yields. The method has the following merits: Firstly, Catalyst AlPW12O40 is non-corrosive and environmentally benign; Secondly, loading amount of catalyst is very low, less than 1 mol %; Thirdly, water as solvent is green and safe.