Synthesis of 3-Fluoro-2,5-Disubstituted
Furans and Further Derivative Reactions to Access Fluorine-Containing
3,3′-Bifurans and Tetrasubstituted Furans
Copper-Mediated Fluoroalkylation Reactions with [(Phenylsulfonyl)-difluoromethyl]trimethylsilane: Synthesis of PhSO2CF2-Containing Allenes and Alkynes
作者:Jinbo Hu、Jieming Zhu、Fei Wang、Weizhou Huang、Yanchuan Zhao、Wenchao Ye
DOI:10.1055/s-0030-1259676
日期:2011.4
Copper-mediated (phenylsulfonyl)difluoromethylation of propargyl chlorides and alkynyl halides with PhSO2CF2TMS reagent was successfully achieved to give PhSO2CF2-containing allenes and alkynes, respectively. It is believed that the in situ formed PhSO2CF2Cu species is involved in the present (phenylsulfonyl)difluoromethylation reactions.
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.