with N-(oxopyrrolin-4-yl)-3-chloromethylbenzonitriles provides 5-substituted aminopyrrolo[3,4-b]quinolines by an overall single-pot, tandem alkylation/cyclization sequence. Mechanistic considerations suggest an in situ–generated ortho-quinone methide imine (aza-ortho-xylylene) as a reactive intermediate, which may trap an alkyl group from the diorganozinc reagent by a conjugate addition. GRAPHICAL
摘要 二
有机锌试剂与 N-(oxopyrrolin-4-yl)-3-chloromethylbenzonitriles 的反应通过整体单锅串联烷基化/环化序列提供 5-取代的
氨基
吡咯并 [3,4-b]
喹啉。机理考虑表明,原位生成的邻醌甲基
亚胺(氮杂
邻二甲苯)作为反应中间体,可以通过共轭加成从二
有机锌试剂中捕获烷基。图形概要