Polyethylene Glycol (PEG-400): An Efficient and Recyclable Reaction Medium for the Synthesis of Pyrazolo[3,4-b]pyridin-6(7H)-one Derivatives
作者:Xiaoxing Zhong、Guolan Dou、Deming Wang
DOI:10.3390/molecules181113139
日期:——
A mild and efficientsynthesis of pyrazolo[3,4-b]pyridine-6(7H)-one derivatives via a three-component reaction of an aldehyde, Meldrum’s acid and 3-methyl-1H-pyrazol-5-amine using recyclable polyethylene glycol (PEG)-400 as a reactionmedium is described. This method has the advantages of accessible starting materials, good yields, mild reaction conditions and begin environmentally friendly.