Synthesis of 2-Substituted 4<i>H</i>-3,1-Benzoxazin-4-ones by Thermally Induced Cyclization of<i>N</i>-(2-Benzyloxycarbonyl)phenyl Ketenimines; Oxygen-to-Carbon Migration of a Benzyl Group
作者:Mateo Alajarín、Ángel Vidal、María-Mar Ortín、Delia Bautista
DOI:10.1055/s-2005-870015
日期:——
N-(2-Benzyloxycarbonyl)phenyl ketenimines undergo a thermally induced cyclization to give -substituted 4H-3,1-benzox-azin-4-ones. These processes involve the formation of a new carbon-oxygen bond and the migration of the benzyl group from the oxygen atom of the benzyloxy unit at the ester function to the terminal carbon atom of the ketenimine fragment.
N-(2-Benzyloxycarbonyl)phenyl ketenimines 经历热诱导环化以产生-取代的 4H-3,1-benzox-azin-4-ones。这些过程涉及新碳-氧键的形成和苄基从酯官能团的苄氧基单元的氧原子迁移到烯酮亚胺片段的末端碳原子。