Sc(OTf)<sub>3</sub>-Catalyzed Bicyclization of<i>o</i>-Alkynylanilines with Aldehydes: Ring-Fused 1,2-Dihydroquinolines
作者:Can Zhu、Shengming Ma
DOI:10.1002/anie.201406959
日期:2014.12.1
A Sc(OTf)3‐catalyzed cascade Prins‐type cyclization reaction of o‐alkynylanilines, bearing a hydroxy or amine functionality, with aldehydes affords 1,2‐dihydroquinoline derivatives having an extra fused ring efficiently under mild reaction conditions. It is interesting to observe the reversed reactivity in the highly selective formation of 1,2‐dihydroquinoline derivatives instead of the formation of
带有羟基或胺官能团的邻炔基苯胺的Sc(OTf)3催化级联Prins型环化反应与醛可在温和的反应条件下有效地提供具有额外稠合环的1,2-二氢喹啉衍生物。有趣的是,在高选择性地形成1,2-二氢喹啉衍生物而不是通常偏爱的吲哚衍生物的过程中观察到逆反应性。