Intramolecular [4 + 2] Cycloaddition Reactions of Ketenimines: A New Synthesis of Benz[<i>b</i>]acridines
作者:Mateo Alajarín、Angel Vidal、María-Mar Ortín、Fulgencio Tovar
DOI:10.1055/s-2002-35234
日期:——
N-[2-(2-Propenyl)phenyl]-C.C-diphenyl ketenimines undergo a thermally induced intramolecular [4 + 2] cycloaddition to give 5,11,11a,12-tetrahydrobenz[b]acridines, which are converted into the fully aromatic benz[b]acridines by oxidation with Pd/C in refluxing ortho-xylene.
N-[2-(2-丙烯基)苯基]-CC-二苯基酮亚胺经历热诱导的分子内[4 + 2]环加成反应生成5,11,11a,12-四氢苯并[b]吖啶,其完全转化为在回流的邻二甲苯中用 Pd/C 氧化芳族苯并 [b] 吖啶。