Synthesis of new dihydrooxathiino[2,3-<i>b</i>]quinoline
作者:Hoh-Gyu Hahn、Kee Hyuk Chang、Wha Suk Lee、Ji Uk Yoo
DOI:10.1002/jhet.5570330681
日期:1996.11
A synthesis of new dihydrooxathiinoquinoline 4 is described. The key compound 6 was prepared by known methods from acetoacetanilide 1. A condensation of β-chlorosulfide 6 in 75% aqueous sulfuric acid gave quinolone 5. Conversion of 5 to 4 was achieved by treatment with potassium hydroxide in ethanol solution.