Highly Enantioselective Henry Reactions in Water Catalyzed by a Copper Tertiary Amine Complex and Applied in the Synthesis of (S)-N-trans-Feruloyl Octopamine
作者:Guoyin Lai、Fengfeng Guo、Yueqin Zheng、Yang Fang、Haigang Song、Kun Xu、Sujing Wang、Zhenggen Zha、Zhiyong Wang
DOI:10.1002/chem.201002915
日期:2011.1.24
It's in the water! A new coppertertiaryaminecomplex was prepared and applied in asymmetric Henryreactions in water and in the short synthesis of (S)‐N‐trans‐feruloyl octopamine. This catalytic system provided an approach to the enantioselectiveHenryreaction of aldehydes with hydroxyl substituents (see graphic).
A highly efficient enantioselective Henry reaction has been carried out using per-6-ABCD as a supramolecular chiral host and promoter to give the corresponding adduct with high yield (up to 99%) and enantiomeric excess (up to 99%). Per-6-ABCD also promotes the diastereoselective Henry reaction in a syn-selective manner to give the adduct up to 99% yield with 99:1 syn/anti selectivity. The enantiomeric excess of the syn-adduct is 99%. The catalyst is recovered and reused without loss in its activity.