One-Pot Synthesis of α-Alkylidene-γ-butyrolacton-2-ones (Tetronic Acid Derivatives): Polar Solvent Induces a New Type of γ-Lactonization
作者:Abdolali Alizadeh、Hamideh Sabahnoo、Zohreh Noaparast、Nasrin Zohreh、Azadeh Mikaeili
DOI:10.1055/s-0030-1258113
日期:2010.7
An efficient, one-pot synthetic protocol toward α-alkylidene-γ-butyrolacton-2-ones, a rather unexplored class of heterocyclic scaffolds starting from primary amines, methyl acetoacetate, and chloroacetyl chloride is described. The mixture of MeCN-MeOH as a polar solvent triggers a new cycloaddition of the enaminone intermediate. The reaction is completed within 12 hours under reflux condition to produce the title compounds.
描述了一种高效的一锅合成方案,用于α-亚烷基-γ-丁内酯-2-酮,这是一类从伯胺、乙酰乙酸甲酯和氯乙酰氯开始的尚未探索的杂环支架。 MeCN-MeOH 混合物作为极性溶剂引发烯胺酮中间体的新环加成。回流条件下反应在12小时内完成,得到标题化合物。