Palladium catalyzed synthesis of 2-trifluoromethylquinolines through a domino Sonogashira–alkyne carbocyclization process
作者:Zixian Chen、Jiangtao Zhu、Haibo Xie、Shan Li、Yongming Wu、Yuefa Gong
DOI:10.1039/b925285a
日期:——
A new, rapid and high-yielding method to prepare 3,4-disubstituted 2-trifluoromethylquinolines by a palladiumcatalyzed tandem Sonogashira-alkyne carbocyclization of beta-trifluoromethyl beta-enaminoketones with arynes is described. Moderate to excellent yields have been achieved under mild conditions. This reaction can also be expanded to the non-fluorine containing substrates. The reaction mechanism