Cerium Ammonium Nitrate-Catalyzed Multicomponent Reaction for Efficient Synthesis of Functionalized Tetrahydropyridines
作者:Hong-Juan Wang、Li-Ping Mo、Zhan-Hui Zhang
DOI:10.1021/co100055x
日期:2011.3.14
A highly atom-economic one-pot synthesis of functionalized tetrahydropyridines by a multicomponent condensation reaction of β-ketoester, two equivalents of aromatic aldehyde, and two equivalents of amine in the presence of a catalytic amount of cerium ammonium nitrate (CAN) is reported. In this way, a series of pharmacologically interesting substituted piperidine derivatives were obtained in moderate
The three-component one-potsynthesis of highlyfunctionalizedpiperidine derivatives was carried out by condensing 1,3-dicarbonyl compounds with aromatic aldehydes and aniline using a catalytic amount (10 mol%) of LaCl3·7H2O in methanol at room temperature. The main features of current protocol include easy work up, mild reaction conditions, good yields and high atom economy.Graphical Abstract