Highly Stereoselective Intramolecular Carbofluorination of Internal <i>α,β</i>-Ynones Promoted by Selectfluor
作者:Bingbin Zhu、Hang Han、Wei-Ke Su、Boan Yan、Zhi Li、Chuanming Yu、Xinpeng Jiang
DOI:10.1021/acs.orglett.1c01441
日期:2021.6.4
metal-free intramolecular carbofluorination protocol for the synthesis of tetrasubstituted monofluoroalkenes from internal α,β-ynones and Selectfluor with both high stereoselectivity and broad functional group tolerance. The chelation between tetrafluoroborate anion and the oxygen present in the aldehyde group rendered the reaction highly stereoselective, with the tetrafluoroborate serving as the direct fluorine
在此,我们报告了一种无金属分子内碳氟化协议,用于从内部α,β-炔酮和 Selectfluor合成四取代的单氟烯烃,具有高立体选择性和广泛的官能团耐受性。四氟硼酸盐阴离子与醛基中存在的氧之间的螯合使反应具有高度立体选择性,四氟硼酸盐作为直接的氟源。因此,添加四氟硼酸钠后,Selectfluor 可以重复使用多次,而不会牺牲反应性。