作者:Christopher D. Gabbutt、John D. Hepworth、B.Mark Heron、Magan Kanjia
DOI:10.1016/s0040-4020(01)80797-3
日期:1994.1
chroman-4-ones react with an excess of thionyl chloride to give the α-chlorosulfenyl chlorides (2) which form sulfenamides (3) when treated with secondary amines. On hydrolysis, (3) undergo a ring contraction to give benzo[b]thiophen-3-ones (4).
噻
苯并
吡喃-4-酮和
苯并
吡喃-4-酮与过量的亚
硫酰氯反应生成α-
氯亚
磺酰氯(2),当用仲胺处理时,形成亚磺
酰胺(3)。
水解时,(3)发生环收缩,得到
苯并[ b ]
噻吩-3-
酮(4)。