Unexpected Formation of Tetrasubstituted 2,3-Dihydrofurans from the Reactions of β-Keto Polyfluoroalkanesulfones with Aldehydes
作者:Chunhui Xing、Shizheng Zhu
DOI:10.1021/jo049317y
日期:2004.9.1
Catalyzed by piperidine, the reactions of β-keto polyfluoroalkanesulfones with aromatic aldehydes afforded the unexpected tetrasubstituted 2,3-dihydrofurans in good yields, probably proceeding through the normal Knoevenagel condensation products. This reaction provided an efficient and novel method for the stereoselective synthesis of fluorine-containing tetrasubstituted trans-2,3-dihydrofurans.