Synthesis of functionalized 2-pyrrolidinones via domino reactions of arylamines, ethyl glyoxylate and acetylenedicarboxylates
作者:Hong Gao、Jing Sun、Chao-Guo Yan
DOI:10.1016/j.tet.2012.11.018
日期:2013.1
successfully developed via the domino reactions of ethyl glyoxylate and acetylenedicarboxylate with 2 M arylamines in the presence of benzoic acid as catalyst. When two kinds of amines were used in the reaction, the stronger nucleophilic aliphatic amine preferentially added to acetylenedicarboxylate to form the reactive intermediate β-enamino ester and the reaction showed high regioselectivity.