Gold-Catalyzed Synthesis of Glyoxals by Oxidation of Terminal Alkynes: One-Pot Synthesis of Quinoxalines
作者:Shuai Shi、Tao Wang、Weibo Yang、Matthias Rudolph、A. Stephen K. Hashmi
DOI:10.1002/chem.201300518
日期:2013.5.17
From terminalalkynes to glyoxals: Terminalalkynes can be oxidized under mild conditions by the use of an N‐oxide in the presence of a gold catalyst. The intermediate glyoxal derivatives can be transferred in a one‐pot procedure to substituted quinoxalines (see scheme).
demonstrated by its gram-scale and broad potential applications. Furthermore, this protocol serves as a powerful tool for the late-stage functionalization of various complex bioactive molecules and drugs to provide a new class of molecules containing two distinct bioactive molecules directly linked. Detailed mechanistic studies reveal that the current reaction goes through a novel mechanism different from