Efficient Preparation of 4-Hydroxyquinolin-2(1<i>H</i>)-one Derivatives with Silver-Catalyzed Carbon Dioxide Incorporation and Intramolecular Rearrangement
作者:Tomonobu Ishida、Satoshi Kikuchi、Tohru Yamada
DOI:10.1021/ol401571r
日期:2013.7.19
Although 4-hydroxyquinolin-2(1H)-one derivatives have attracted much attention due to their biological benefits, conventional reactions under harsh heat conditions must be employed to provide these key compounds. In the presence of a catalytic amount of silver salt, various o-alkynylanilines were treated with carbon dioxide and a base under mild reaction conditions to afford the corresponding 4-hy