| abstract |
The invention discloses a kind of polyhedral oligomeric silsesquioxane dendritic macromole catalyst, molecular formula is { Si 8 O 12 [C 3 H 6 SCH 2 (Salen‑CoX)] 8 , general structure is as shown in formula I: in formula, R 1 、R 2 And R 3 Independently selected from hydrogen, C 1 ～C 20 Alkyl, C 6 ～C 24 Aryl, C 7 ～C 25 Aryl alkyl, the cycloalkyl of 4～10 carbon atoms；X is selected from halide ion, BF 4 ‑ 、PF 6 ‑ 、SbF 6 ‑ 、NO 3 ‑ Or organic acid.The invention provides the polyhedral oligomeric silsesquioxane dendritic macromole catalyst that a class is novel, for the polyhedral oligomeric silsesquioxane containing eight tetradentate schiff base (Salen) Co complex unit, described catalyst is for the hydrolytic kinetic resolution reaction of raceme terminal epoxide, there is catalysis activity and enantioselectivity is high, and reusable advantage. |