Dedicated to Prof. Joan Bosch on the occasion of his retirement
Chemodivergent cycloadditions of azomethine ylides with diphenylcyclopropenone involving
either Cu-catalyzed [3+3] or Ag-catalyzed [3+2] processes have been developed. These
transformations provide a highly efficient method for the preparation of a variety
of aromatic substituted dihydropyridinones and dihydropyrrolones with excellent regio
and diasteroselectivities.
Key words
chemodivergent reactions - [3+3] and [3+2] cycloadditions - azomethine ylide - cyclopropenone