Synthesis of chromeno[2,3-c]pyrrol-9(2H)-ones by domino Michael-Claisen-SNAr reactions of amino acid esters with 2-chlorophenylpropynones
作者:Tuan Anh Nguyen Tien、Mariia Miliutina、Jan Radolko、Richard Thom、Tuan T. Dang、Peter Ehlers、Peter Langer
DOI:10.1016/j.tet.2021.132608
日期:2022.1
The domino reaction of amino acid esters with 2-chlorophenylpropynones, readily available by Sonogashira reactions of 2-chlorobenzoylacetylenes, afforded novel chromeno[2,3-c]pyrrol-9(2H)-ones. The domino reaction involves three steps, i.e. Michael, Claisen and SNAr reactions. Intermediates could be isolated in some cases which allowed to get some insight in the mechanism.