(NHC-BF2Ar) by treatment with 2 equiv of 1-chloromethyl-4-fluoro-1,4-diazonia-bicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor). In turn, the NHC-difluoro(aryl)boranes participate directly in Suzuki reactions under conditions previously used for anionic trifluoroborate salts. Accordingly, NHC-difluoroboranes are a new class of stable precursors for Suzuki reactions.
通过使用2当量的1-
氯甲基-4-
氟-1,4处理,可以将现成的NHC-芳基
硼烷(NHC-BH 2 Ar)高产率转化为稳定的NHC-二
氟(芳基)
硼烷(NHC-BF 2 Ar)。 -二氮杂
双环[2.2.2]辛烷双(四
氟硼酸酯)(Selectfluor)。反过来,在先前用于阴离子三
氟硼酸盐的条件下,NHC-二
氟(芳基)
硼烷直接参与Suzuki反应。因此,NHC-二
氟硼烷是铃木反应的一类新的稳定前体。