ring size-controlled oxidative activation of o-alkynylanilines opens up a complementary appealing protocol for poly-N-heterocycle synthesis. When electron-poor π-alkyne iron species combine with cyclic enamines obtained from cyclohexanone and β-tetralone, they undergo a regioselective 6-exo-dig cyclization to afford the corresponding dibenzo[b,j][1,10]phenanthrolines and 12-benzoylated dihydrobenzo[a]acridine
FeCl 3促进的邻炔基
苯胺的环大小控制的氧化活化为聚-N-杂环合成打开了一个有吸引力的补充协议。当贫电子的π-炔
铁与从
环己酮和
β-四氢萘酮获得的环烯胺结合时,它们会进行区域选择性的6- exo- dig环化反应,生成相应的二苯并[ b,j ] [1,10]
菲咯啉和12-苯甲酰化的二氢苯并[ a ] ac啶骨架。后来,这些吖图案变得完全不饱和因脱氢芳构通过氮杂烯丙基氧化中间体。我们通过2,3-二氢- 1的曼尼希型烷基化获得的所有季碳中心pseudoindoxyls ħ
茚-1-酮与从生成的环状酮
亚胺原位分子亲核环合Ó -alkynylanilines。