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Citation: HE Le-Qin, ZHAO Ji-Quan, ZHANG Ya-Ran. Catalytic Asymmetric Epoxidation of Styrene with Chiral Mn(Ⅲ) Salen as Catalyst and NaOCl as Oxidant[J]. Chinese Journal of Applied Chemistry, ;2006, 23(6): 688-690. shu

Catalytic Asymmetric Epoxidation of Styrene with Chiral Mn(Ⅲ) Salen as Catalyst and NaOCl as Oxidant

1.
Hebei University of Technology, Department of Chemistry, Tianjin 300130

Corresponding author: ZHAO Ji-Quan,
Received Date: 28 July 2005
Available Online: 13 September 2005
Fund Project: 国家自然科学基金(20376017)资助项目 (20376017)

A new chiral Mn(Ⅲ) Salen complex was synthesized and characterized by FT-IR and elemental analysis.The complex was used as catalyst for enantioselective epoxidation of styrene with NaOCl as oxidant in the presence of axial base.The effects of pH value,solvents and axial bases on the asymmetric epoxidation of styrene were investigated.Conversion of styrene and ee of the epoxides could reach 100% and 42% respectively when the reaction was run at 0℃,the catalyst loading is 0.1 mmol,and pH value of 1.0 mmol 4-PPNO in buffered CH₂Cl₂ is 11.30.
- asymmetric epoxidation,
- Salen Mn(Ⅲ) complex,
- styrene,
- NaOCl
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