Enantioselective Borohydride 1,4-Reduction of α, β-Unsaturated Carboxamides Using Optically Active Cobalt(II) Complex Catalysts
作者:Tohru Yamada、Yuhki Ohtsuka、Taketo Ikeno
DOI:10.1246/cl.1998.1129
日期:1998.11
The enantioselective borohydride reduction catalyzed by cobalt(II) complex was successfully applied to 1,4-reduction of β,β-disubstituted α,β-unsaturated carboxamides. In the presence of less than 1 mol% of optically active aldiminato cobalt(II) complex catalyst, the corresponding carboxamides were obtained in high yields with high enantiomeric excesses.
由钴(II)配合物催化的对映选择性硼氢化物还原成功应用于 β,β-二取代 α,β-不饱和甲酰胺的 1,4-还原。在小于 1 mol% 的旋光醛亚氨基钴 (II) 配合物催化剂的存在下,以高收率和高对映体过量获得了相应的羧酰胺。