Iridium-Catalyzed Asymmetric Ring-Opening Reactions of Oxabenzonorbornadienes with Amine Nucleophiles
作者:Dingqiao Yang、Yuhua Long、Junfang Zhang、Heping Zeng、Sanyong Wang、Chunrong Li
DOI:10.1021/om100384q
日期:2010.8.23
We have explored a new iridium-catalyzed ring-opening reaction of oxabenzonorbornadienes with a variety of primary aromatic amine or N-substituted piperazine nucleophiles, affording the corresponding products in excellent yields (up to 99%) with moderate enantioselectivity (25−81% ee). The trans configuration of product 2d was confirmed by X-ray crystallography.
我们探索了氧杂苯并降冰片二烯与各种伯芳族胺或N-取代的哌嗪亲核试剂的铱催化开环反应,从而以中等收率(25-81%ee)以优异的收率(高达99%)提供了相应的产物)。通过X射线晶体学确认产物2d的反式构型。