Thermal Cyclization of Ketene Dithioacetals: A Convenient Synthetic Route to Substituted 2(1<i>H</i>)-Quinolinones and 2(1<i>H</i>)-Pyridones
作者:Chwang Siek Pak、Eun Bok Choi
DOI:10.1055/s-1992-26361
日期:——
Acyl(arylcarbamoyl)ketene dithioacetals 2 and acyl(1-alkenylcarbamoyl)ketene dithioacetals 5 obtained from the corresponding ß-oxo amides 1, 4 were thermally cyclized to give various 3-acyl-4-alkylthio-2(1H)-quinolinones 3, and 3-acyl-4-alkylthio-5-aryl-2(1H)-pyridones 6, respectively, depending on the substituent of the amide group.
由相应的β-氧代酰胺1、4获得的酰基(芳基氨基甲酰基)烯酮二硫代缩醛2和酰基(1-烯基氨基甲酰基)烯酮二硫代缩醛5,根据酰胺基团的取代情况,经热环化反应分别生成多种3-酰基-4-烷硫基-2(1H)喹啉酮3和3-酰基-4-烷硫基-5-芳基-2(1H)吡啶酮6。