查找使用阿拉丁产品的科研文献

Synthesis of new 3,3′-(1,4-phenylene)bis(1,5-diones) derivatives

Qiang Shao,Hui Liu,Ting-Ting Wang,He-Ping Zeng

Several 3,3′-(1,4-phenylene)bis(1,5-diones) and their chalcone precursors have been prepared in good to excellent yield via aldol addition and Michael addition starting from 3-acetyl-2,5-dimethylfuran or 3-acetyl-2,5-dimethyl-thiophene with terephthalaldehyde in the presence of appropriate base NaOH or lithium diisopropylamide. The kind and amount of alkali played a critical role in improving the reaction rates and yields of the products. J. Heterocyclic Chem., (2011).