Enantioselective Synthesis ofβ-Blockersvia Hydrolytic Kinetic Resolution of Terminal Oxiranes by Using Bimetallic Chiral {{2,2′-[Cyclohexane-1,2-diylbis(nitrilomethylidyne)]bis[phenolato]}(2−)}cobalt ([Co(salen)])-Type Complexes
作者:Rahul B. Kawthekar、Geon-Joong Kim
DOI:10.1002/hlca.200890037
日期:2008.2
The synthesis of chirally pure β-blockers was successfully achieved via hydrolytic kinetic resolution of butyl (±)-4-(oxiran-2-ylmethoxy)benzeneacetate ((±)-1) and (±)-4-(oxiran-2-ylmethoxy)benzeneacetonitrile ((±)-2) in the presence of bimetallic chiral [Co(salen)]-type complexes. The newly synthesized bimetallic chiral [Co(salen)]-type complexes exhibited excellent enantioselectivities of up to >98%
通过(±)-4-(环氧乙烷-2-基甲氧基)苯乙酸丁酯((±)-1)和(±)-4-(环氧乙烷-2-)的水解动力学拆分成功地完成了手性纯β-阻滞剂的合成。双金属手性[Co(salen)]型配合物存在下的甲氧基)苯乙腈((±)-2)。新合成的双金属手性的Co(沙仑)] -型配合物表现出了优异的对映选择性,以良好的产率(> 98%ee的表1 - 3)。