A New Route to Tricyclic 2-Pyridone Frameworks via Formation of Bicyclic<i>N</i>-Alkenyl Alkynylamides Followed by Gold-catalyzed Cycloisomerization
作者:Hidetomo Imase、Ken Tanaka
DOI:10.1246/cl.2009.1152
日期:2009.12.5
A cationic gold(I)/PPh3 complex catalyzes cycloisomerizations of bicyclic N-alkenyl alkynylamides leading to tricyclic 2-pyridone derivatives at room temperature in good yields. The bicyclic N-alkenyl alkynylamides are readily prepared starting from commercially available 2-substituted cycloalkanones.