The polyfluoroalkyl-lactonization of 4-pentenoic acids having a substituent at the 2 or 3 position with the polyfluoroalkyliodides initiated by sodium dithionite was realized in good yields. A new and efficient method for the synthesis of fluorine-containing γ-lactones is described.
A convenient synthesis of fluoroalkylated γ-butyrolactones from polyfluoroalkyl iodides and 4-pentenoic acid catalyzed by Pd(PPh3)4
作者:Fanhua Xiao、Fanhong Wu、Xueyan Yang、Yongjia Shen、Xinmei Shi
DOI:10.1016/j.jfluchem.2004.11.015
日期:2005.3
A convenient synthesis of fluoroalkylated γ-butyrolactones was realized through the reaction of fluoroalkyliodides with 4-pentenoic acid in the presence of catalytic amounts of tetrakis(triphenylphosphine)palladium and sequential treatment with triethylamine in 79–85% yields.