Diversified Construction of Chromeno[3,4-<i>c</i>]pyridin-5-one and Benzo[<i>c</i>]chromen-6-one Derivatives by Domino Reaction of 4-Alkynyl-2-oxo-2<i>H</i>-chromene-3-carbaldehydes
作者:Jian Xiao、Yuye Chen、Shuai Zhu、Liang Wang、Lubin Xu、Hongtao Wei
DOI:10.1002/adsc.201301171
日期:2014.5.26
Silver‐catalyzed three‐component, tandem reactions of 4‐alkynyl‐2‐oxo‐2H‐chromene‐3‐carbaldehydes, amines and various nucleophiles result in the formation of highly functionalized chromeno[3,4‐c]pyridin‐5‐ones in high yields. Gold‐catalyzed [4+2] cycloadditions of 4‐alkynyl‐2‐oxo‐2H‐chromene‐3‐carbaldehydes with alkynes or alkenes have also been achieved to afford benzo[c]chromen‐6‐ones efficiently.
银催化的4-炔基-2-氧代-2-氧-2H-铬烯-3-碳醛,胺和各种亲核试剂的三组分串联反应导致高度官能化的铬诺[3,4-c]吡啶-5-5的形成高产。还成功实现了金催化的4-炔基-2-氧代-2-H-2-苯并-3-炔醛与炔烃或烯烃的[4 + 2]环加成反应,从而有效地提供了苯并[c]铬-6-酮。