Toward a novel approach to bis-β-lactam synthesis using Vilsmeier reagent as an efficient entity via Staudinger cycloaddition reaction
作者:Jyotsna Meshram、Parvez Ali、Vandana Tiwari
DOI:10.1002/jhet.455
日期:2010.11
A facile synthesis of bis‐β‐lactams has been executed using chloromethylenedimethylammonium chloride (Vilsmeier reagent), prepared easily from N,N‐dimethylformamide and phosphorus oxychloride. It works out as a versatile acid activator reagent for the direct [2 + 2] ketene–imine cycloaddition of substituted acetic acid and bis‐imines in one‐pot synthesis under mild conditions. Thus, this method has
已使用氯亚甲基二甲基氯化铵(Vilsmeier试剂)轻松完成了双-β-内酰胺的合成,该反应可由N,N-二甲基甲酰胺和三氯氧化磷轻松制得。它是一种通用的酸活化剂,可在温和条件下在单锅合成中直接[2 + 2]烯酮-亚胺基环加成取代的乙酸和双亚胺。因此,已证明该方法是双-β-内酰胺合成的高产,高效和廉价方案。J.杂环化学。(2010)。