Synthesis of 2-substituted 4H-3,1-benzoxazin-4-ones by thermally induced cyclization of N-(2-benzyloxycarbonyl)phenyl ketenimines; oxygen-to-carbon migration of a benzyl group

1. Alajarín, M.
2. Vidal, Á.
3. Ortín, M.-M.
4. Bautista, D.