作者:Ethan A. Wappes、Stacy C. Fosu、Trevor C. Chopko、David A. Nagib
DOI:10.1002/anie.201604704
日期:2016.8.16
amination of unactivated, secondary C−H bonds to form a broad range of functionalized pyrrolidines has been developed by a triiodide (I3−)‐mediated strategy. By in situ 1) oxidation of sodium iodide and 2) sequestration of the transiently generated iodine (I2) as I3−, this approach precludes undesired I2‐mediated decomposition which can otherwise limit synthetic utility to only weak C(sp3)−H bonds. The mechanism
与c δ -H的未活化的,仲C-H键以形成宽范围的官能化的吡咯烷的已经由三碘化物开发胺化(I 3 - )-介导的策略。通过原位1)碘化钠和2)的螯合的氧化瞬时产生碘(I 2)为我3 - ,该方法排除了不希望的我2介导的分解,否则可以限制合成实用程序来仅弱C(SP 3) -H键。NMR和UV / Vis数据以及被拦截的中间体均支持这种由三碘化物介导的无偏,次级C(sp 3)-H键通过热或光解引发的环化机理。