Synthesis of 5-Substituted Aminopyrrolo[3,4-b]quinolinones by a Diorganozinc-Mediated Tandem Alkylation/Cyclization
作者:James B. Campbell、Judy W. Firor
DOI:10.1080/00397911.2010.542537
日期:2012.6
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