A Highly<i>anti</i>-Selective Asymmetric Henry Reaction Catalyzed by a Chiral Copper Complex: Applications to the Syntheses of (+)-Spisulosine and a Pyrroloisoquinoline Derivative
作者:Kun Xu、Guoyin Lai、Zhenggen Zha、Susu Pan、Huanwen Chen、Zhiyong Wang
DOI:10.1002/chem.201201775
日期:2012.9.24
A highly anti‐selective asymmetric Henry reaction has been developed, affording synthetically versatile β‐nitroalcohols in a predominately anti‐selective manner (mostly above 15:1) and excellent ee values (mostly above 95 %). Moreover, the anti‐selective Henry reaction was carried out in the presence of water for the first time with up to 99 % ee. The catalytic mechanism was proposed based on the detection
已经开发出了一种高度抗选择性的不对称亨利反应,以一种主要是抗选择性的方式(大多数在15:1以上)和出色的ee值(大多数在95%以上)提供了合成通用的β-硝基醇。此外,抗选择性亨利反应是在水的存在下首次以高达99% ee的条件进行的。基于萃取电喷雾电离质谱(EESI-MS)对中间体的检测,提出了催化机理。此外,抗加合物已成功转化为具有生化重要性的(+)-螺旋甜菜碱和吡咯并异喹啉衍生物。