An efficient method for the one‐pot synthesis of substituted phenanthridinone derivatives from N‐methoxybenzamides and aryltriethoxysilanes through rhodium‐catalyzed dual CHbondactivation and annulation reactions is described. A double‐cycle mechanism is proposed to account for this catalytic reaction. In addition, isotope‐labeling studies were performed to understand the intimate mechanism of the
Palladium-catalyzed cyclization of benzamides with arynes: application to the synthesis of phenaglydon and N-methylcrinasiadine
作者:Sandeep Pimparkar、Masilamani Jeganmohan
DOI:10.1039/c4cc05252h
日期:——
N-Methyl or methoxy substituted benzamides reacted with benzynes in the presence of a palladium catalyst, yielding tricyclic N-methyl or N-methoxy substituted phenanthridinones.