Beckmann rearrangement using indium(III) chloride: Synthesis of substituted oxazoloquinolines from the corresponding ketoximes of 3-acyl-1H-quinolin-4-ones

Article abstract of DOI:10.1055/s-2006-926463

Nitrilium ion intermediates in the Beckmann rearrangement of 3-acyl-4-quinolinone ketoximes, in the presence of InCl₃, were trapped by the β-hydroxy group of the tautomeric form of the ketoxime giving, predominantly, the corresponding oxazoloqu