The one-pot four-component reaction of 3-(1H-indol-3-yl)-3-oxopropanenitriles, aromatic aldehydes, cycloalkanones and ammonium acetate occurred via a six-step tandem Knoevenagel condensation–nucleophilic addition to carbonyl–Michael addition–N-cyclization–elimination–air oxidation sequence to afford structurally intriguing indole–cycloalkyl[b]pyridine-3-carbonitrile hybrid heterocycles in excellent yields.
三-(1H-吲哚-3-基)-3-氧代丙烯腈、芳香醛、环烷酮和醋酸铵的一锅四组分反应通过六步串联的Knoevenagel缩合-亲核加成到羰基-Michael加成-N-环化-消除-空气氧化顺序,以极高的收率得到结构有趣的吲哚-环烷基[b]吡啶-3-碳腈杂环混合物。