New Protocol for the Synthesis of 2-Alkanoyl- and 2-Aryloyl-5,5-dimethylcyclohexane-1,3-diones by the Reaction of Dimedone with Various Aldehydes and Cyanogen Bromide in the Presence of Triethylamine
作者:Nader Pesyan、Elmira Kashani、Hamid Rashidnejad
DOI:10.1055/s-0035-1561935
日期:——
and 13C NMR spectroscopic techniques. A reaction mechanism is proposed. A new route for the synthesis of 2-alkanoyl(aryloyl)-5,5-dimethylcyclohexane-1,3-diones as cyclic β-triketones is described. This synthesis was conducted by the reaction of dimedone with cyanogen bromide and triethylamine to form first the intermediate salt, followed by the addition of various aliphatic and aromatic aldehydes. The
摘要 描述了一种合成2-烷酰基(芳基)-5,5-二甲基环己烷-1,3-二酮作为环状β-三酮的新途径。该合成是通过使二甲酮与溴化氰和三乙胺反应以首先形成中间盐,然后加入各种脂族和芳族醛来进行的。产物的结构通过IR,1 H和13 C NMR光谱技术表征。提出了一种反应机理。 描述了一种合成2-烷酰基(芳基)-5,5-二甲基环己烷-1,3-二酮作为环状β-三酮的新途径。该合成是通过使二甲酮与溴化氰和三乙胺反应以首先形成中间盐,然后加入各种脂族和芳族醛来进行的。产物的结构通过IR,1 H和13 C NMR光谱技术表征。提出了一种反应机理。