Trifluoromethanesulfonic Acid-Catalyzed Tandem Semi-Pinacol Rearrangement/Alkyne-Aldehyde Metathesis Reaction of Arylpropagylsulfonamide-Tethered 2,3-Epoxycyclohexan-1-ols to Spiropiperidines
作者:Ming-Nan Lin、Shih-Hui Wu、Ming-Chang P. Yeh
DOI:10.1002/adsc.201100576
日期:2011.12
A simple and efficient trifluoromethanesulfonic acid-catalyzed cycloisomerization of arylpropagylsulfonamide-tethered 2,3-epoxycyclohexan-1-ols is described. The cyclization proceeds via tandem semi-pinacol rearrangement/alkyne-aldehyde metathesis to afford spiropiperidines under mild reaction conditions.
描述了一种简单而有效的三氟甲磺酸催化的芳基丙基磺酰胺连接的2,3-环氧环己-1-醇的环异构化反应。通过串联半频哪醇重排/炔-醛复分解进行环化,在温和的反应条件下得到螺哌啶。