<i>p</i>-Nitrophenyl carbonate promoted ring-opening reactions of DBU and DBN affording lactam carbamates
作者:Madhuri Vangala、Ganesh P Shinde
DOI:10.3762/bjoc.12.197
日期:——
The amidine bases DBU (1,8-diazabicyclo[5.4.0]undec-7-ene) and DBN (1,5-diazabicyclo[4.3.0]non-5-ene) display nucleophilic behaviour towards highly electrophilic p-nitrophenyl carbonate derivatives with ring opening of the bicyclic ring to form corresponding substituted epsilon-caprolactam and gamma-lactam derived carbamates. This simple method presents a unified strategy to synthesize structurally
BU碱DBU(1,8-二氮杂双环[5.4.0]十一碳-7-烯)和DBN(1,5-二氮杂双环[4.3.0] non-5-ene)对高度亲电子的对硝基苯基碳酸酯显示亲核行为具有双环开环的衍生物,形成相应的取代的ε-己内酰胺和γ-内酰胺衍生的氨基甲酸酯。这种简单的方法提出了一种统一的策略,可以合成结构多样的具有较大底物范围的ε-己内酰胺和γ-内酰胺化合物。