Note
Oxidant Promoted 1,3-Dipolar Cycloaddition of Pyridinium Ylides to Chalcones for Preparation of 1-Benzoyl-2-arylindolizines
Abstract
The derivatives of 1-benzoyl-2-arylindolizine were prepared in moderate yields of 41%–78% by CrO3/Et3N promoted 1,3-dipolar cycloaddition of pyridinium N-ylides and chalcones. Under the same conditions, CrO3/Et3N promoted 1,3-dipolar cycloaddition of isoquinolinium N-ylides and chalcones provided the corresponding 1-benzoyl-2-arylpyrrolo[2,1-a]isoquinolines in 45%–61% yields.
