DBU catalyzed metal free synthesis of fused 1,2,3-triazoles through [3+2] cycloaddition of aryl azides with activated cyclic C–H acids
作者:Harjinder Singh、Garima Khanna、Jitender M. Khurana
DOI:10.1016/j.tetlet.2016.05.082
日期:2016.7
DBU catalyzed synthesis of fused 1,2,3-triazoles by [3+2] cycloaddition of aryl azides with activated cyclic C–H acids such as dimedone, cyclohexane-1,3-dione, 5-methylcyclohexane-1,3-dione, and 2-hydroxynaphthalene-1,4-dione in PEG-400 has been reported under heating. The important features of this reaction are high yield products, short reaction times, easy availability of starting materials, and
DBU通过芳基叠氮化物与活化的环状C–H酸(如二甲酮,环己烷-1,3-二酮,5-甲基环己烷-1,3-二酮)的[3 + 2]环加成反应,催化稠合的1,2,3-三唑的合成据报道,PEG-400中的2-羟基萘-1,4-二酮在加热下。该反应的重要特征是高产率的产物,短的反应时间,容易获得的起始原料以及反应介质和催化剂的可循环性。