Aromatic and Benzylic C-H Bond Functionalization Upon Reaction between Nitriles and Perfluoroalkyl Sulfoxides
作者:Yohan Macé、Céline Urban、Charlotte Pradet、Jean-Claude Blazejewski、Emmanuel Magnier
DOI:10.1002/ejoc.200900873
日期:2009.11
of some intermediates formed by reaction of nitriles with perfluoroalkyl sulfoxides upon trifluoromethanesulfonic anhydride activation. Bistriflate ketal 3, precursor of sulfilimine 1, may undergo a rearrangement to sulfanyl nitrile 5 after triflic acid elimination under thermal conditions. With p-tolyl trifluoromethyl sulfoxide, remote triflic acid elimination from intermediate 4 leads to benzamide
我们研究了腈与全氟烷基亚砜在三氟甲磺酸酐活化时反应形成的一些中间体的热行为。双氟甲磺酸缩酮 3 是硫亚胺 1 的前体,在热条件下三氟甲磺酸消除后,可能会重排为硫磺腈 5。使用对甲苯基三氟甲基亚砜,从中间体 4 中远程消除三氟甲磺酸导致苯甲酰胺 8 的形成。这些反应分别涉及芳族邻位 C-H 键或亚砜基团对位的苄基 C-H 键的选择性官能化。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)