Synthesis of Fluorinated Telechelic Diols Based on 3,3,3-Trifluoropropene as Precursors of Well-Defined Fluoropolymers
作者:Georgi K. Kostov、Gérald Lopez、Stephan M. Brandstadter、Bradley E. Edwards、Bruno Améduri
DOI:10.1021/ol501466c
日期:2014.7.3
Original fluorinated α,ω-diols containing 3,3,3-trifluoropropene (TFP) units were synthesized. The first step dealt with the radical telomerization of TFP with 1,6-diiodoperfluorohexane. Isolated I(TFP)RF(TFP)I diadduct was subsequently reacted with ethylene, and then a two-step hydrolysis gave rise to α,ω-diols in 25% overall yield. The other strategies dealing with the radical addition of I(TFP)RF(TFP)I
合成了包含3,3,3-三氟丙烯(TFP)单元的原始氟化α,ω-二醇。第一步涉及TFP与1,6-二碘全氟己烷的自由基端粒化反应。随后将分离的I(TFP)R F(TFP)I二加合物与乙烯反应,然后进行两步水解,以25%的总产率生成α,ω-二醇。涉及将I(TFP)R F(TFP)I自由基加成到烯丙醇或乙酸烯丙酯上的其他策略导致α,ω-二醇的总产率为13%。这些二醇显示出令人满意的热稳定性和低T g(约-60°C)。