作者:Katsutoshi Ohkubo、Taisuke Hamada、Hitoshi Ishida
DOI:10.1039/c39930001423
日期:——
The enantioselective photoreduction of the helical substrates of rac-[Co(acac)3](acac –= acetylacetonato) and rac-[Co(edta)]–(edta4–= ethylenediaminetetraacetato) with the newly synthesized helical photocatalysts Δ-(or rac)-[Ru[Menbpy)32+Menbpy = 4,4′-bis[(1R,2S,5R)-(–)-menthoxycarbonyl]-2,2′-bipyridine}, and Λ-(or Δ)-[Ru(S or R)-PhEtbpy}3]2+(S or R)-PhEtbpy = 4,4′-bis[(S)-(–) or (R)-(+)-1-phenylethylaminocarbonyl]-2,2′-bipyridine} was realized in the helical-shape recognition reaction with a maximum enantiomer rate ratio (KΔ;/KΛ) of 14.7 in 90%v/v EtOH-H2O at 25 °C.
用新合成的螺旋光催化剂 Δ-(or rac)-[Ru[Menbpy)32+Menbpy = 4,4′-双[(1R,2S、5R)-(-)-薄荷氧羰基]-2,2′-联吡啶},和Λ-(或Δ)-[Ru(S或R)-PhEtbpy}3]2+(S或R)-PhEtbpy = 4,4′-双[(S)-(-)或(R)-(+)-1-苯乙基氨基羰基]-2、2′-联吡啶}在螺旋形识别反应中实现了最大对映体速率比(KΔ;/KΛ)为 14.7,反应温度为 25 °C,反应条件为 90%v/v EtOH-H2O。