Gabbutt Christopher D., Hepworth John D., Heron B. Mark, Kanjia Magan, Tetrahedron, 50 (1994) N 3, S 827-834
作者:Gabbutt Christopher D., Hepworth John D., Heron B. Mark, Kanjia Magan
DOI:——
日期:——
Ring contraction of sulfenamides derived from thiochroman-4-ones
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 ringcontraction 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)。