Heterocycle Annulation of Enolizable Vinyl Quinone Imides. Dihydroquinolines and Quinolines from Thermal 6π-Electrocyclizations and Indoles from Photochemical Cyclizations
作者:Kathlyn A. Parker、Thomas L. Mindt
DOI:10.1021/ol026849x
日期:2002.11.1
text] Enolizable vinyl quinone mono- and diimide substrates yield protected 6-hydroxy and 6-amino dihydroquinolines by thermal electrocyclization. Aromatization provides the corresponding quinolines in quantitative yields. The quinone monoimide substrates undergo clean photochemical conversion to 5-hydroxy indoles.
[反应:见正文]可烯化的乙烯基醌单和二酰亚胺底物通过热电环化反应生成受保护的6-羟基和6-氨基二氢喹啉。芳香化以定量产率提供相应的喹啉。醌单酰亚胺底物经过干净的光化学转化为5-羟基吲哚。