Synthesis of 3-Fluoro-2,5-Disubstituted
Furans and Further Derivative Reactions to Access Fluorine-Containing
3,3′-Bifurans and Tetrasubstituted Furans
作者:Gang Zhao、Shi-Zheng Zhu、Peng Li、Zhuo Chai
DOI:10.1055/s-2008-1078053
日期:——
2,5-Disubstituted 3-fluorofurans were synthesized in 42-99% yield via DBU-promoted cyclization reactions of electron-deficient gem-difluorohomopropargyl alcohols. Starting from these compounds, a series of fluorinated 3,3′-bifurans and tetrasubstituted furans were also prepared through a fluorine-directed ortho-functionalization process.
合成了2,5-二取代的3-
氟呋喃,产率为42-99%,通过
DBU促进的电子缺乏型gem-二
氟同炔醇的环化反应。从这些化合物出发,还通过
氟引导的邻位功能化过程制备了一系列
氟化的3,3′-双
呋喃和四取代
呋喃。