Catalyst-free Synthesis of pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine Derivatives by Aza-Diels-Alder Reaction
作者:Jairo Quiroga、Angela Valencia、Alfredo Perez、Jaime Galvez、Rodrigo Abonia、Braulio Insuasty
DOI:10.2174/1570178611310050006
日期:2013.5.1
A series of pyrazolo[3,4-b]pyrrolo[3,4-d]pyridine derivatives was synthesized via catalyst-free bi-component
and one-pot reactions of 5-aminopyrazoles, DMF-DMA (or TMOF) and N-arylmaleimides in xylene as solvent. This protocol
showed advantages of milder reaction conditions, easier work-up, shorter reaction times and good yields, over other
approaches tested.
通过以二甲苯为溶剂,利用5-氨基吡唑、DMF-DMA(或TMOF)与N-芳基马来酰亚胺的无催化剂双组分和一锅法反应,合成了一系列吡唑并[3,4-b]吡咯并[3,4-d]吡啶衍生物。该方法相较于其他测试过的方法,在反应条件更温和、操作更简便、反应时间更短及产率良好等方面表现出优势。