作者:Ji Su、Qian Chen、Le Lu、Yuan Ma、George Hong Lok Auyoung、Ruimao Hua
DOI:10.1016/j.tet.2017.11.067
日期:2018.1
nucleophilic fluoroarene substitution for CF bonds is presented. The transformation proceeds smoothly with the use of fluoroarenes bearing not only electron-withdrawing group, but also electron-donating group and a variety of nucleophiles such as alcohols, phenols, amines, amides and nitrogen-heterocyclic compounds. The double nucleophilic substitution using ortho-difluoroarenes and nucleophiles bearing ortho-dinucleophilic
通过使用KOH / DMSO作为超碱介质,提出了C F键的亲核氟芳烃取代基。通过使用不仅带有吸电子基团,而且带有供电子基团和各种亲核试剂(如醇,酚,胺,酰胺和氮杂环化合物)的氟代芳烃,转化过程可以顺利进行。使用双亲核取代邻-difluoroarenes和亲核试剂轴承邻-dinucleophilic基团导致的2,3-二氢-1,4- benzodioxins,二苯并[b,E]的形成[1,4]二恶英和10 ħ -phenoxazines在中等至良好的产量。