An Efficient Protocol for Multicomponent
Stereoselective Synthesis of 3-Amino-2(1<i>H</i>)-pyridinones
Using CeCl<sub>3</sub>˙7H<sub>2</sub>O/NaI as
a Reaction Promoter
作者:Lal Yadav、Ritu Kapoor
DOI:10.1055/s-2008-1078272
日期:——
convenient diastereoselective synthesis of 3-amino-2(1H)-pyridinones by CeCl 3 ·7H 2 O/NaI-promoted [3+2+1] three-component coupling reactions of chalcones, 2-phenyl-1,3-oxazolon-5-one, and amines is reported. The protocol involves sequential Michael addition, condensation, ring transformation, and acid hydrolysis. Operational simplicity, ambient temperature, high yields, and diastereoselectivity are the
通过CeCl 3 ·7H 2 O/NaI促进的[3+2+1]三组分偶联反应,一种高效便捷的3-氨基-2(1H)-吡啶酮非对映选择性合成,2-苯基-1,3 -oxazolon-5-one 和胺被报道。该协议涉及顺序迈克尔加法、缩合、环转化和酸水解。操作简单、环境温度、高产率和非对映选择性是本合成协议的关键特征。该反应很好地说明了 Ce(III) 催化的 CC 和 CN 键在一锅法中的形成。