作者:Lambert Brandsma、Natasha A. Chernysheva、Boris A. Trofimov
DOI:10.1080/10426500008043657
日期:2000.4.1
Abstract Lithiated alkynes or alkynylmagnesium bromides readily (THF, -30 + 30°C. 10–15 min) react with phenylsulfinylamine to form N-phenylalkynyl-1-sulfinamides in high yield. Sequential treatment of but-2-yne with butyllithium and magnesium bromide in THF at -100°C leads to the formation of not only N-phenylbut-2-yne-1-sulfinamide, but its allenic isomer, N-phenylbuta-2,3-diene-2-sulfinamide in
摘要 锂化炔烃或炔基溴化镁很容易(THF,-30 + 30°C,10-15 分钟)与苯亚磺胺反应以高产率形成 N-苯基炔基-1-亚磺酰胺。在-100°C 下,在 THF 中用丁基锂和溴化镁依次处理 but-2-yne 不仅会形成 N-苯基but-2-yne-1-亚磺酰胺,还会形成其丙二烯异构体 N-phenylbuta-2, 3-二烯-2-亚磺酰胺的总产率为95%。摩尔比分别为 2.5:1。prop-1-yne-3-magnesium bromide 与苯亚磺胺在乙醚中在-100°C 进行反应,以 81% 的产率得到 N-phenylprop-2-yne-1-sulfinamide。在任何情况下都没有观察到可能的环化。