Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (14): 1681-1687. Previous Articles     Next Articles

Full Papers

新型烷氧基修饰的手性Salen Mn(III)固载催化剂的合成及其在非功能化烯烃不对称环氧化反应中的应用

王长炜1,2,傅相锴*,1,2,3,黄静1,2   

  1. (1西南大学化学化工学院应用化学研究所 重庆 400715)
    (2重庆市应用化学市级重点实验室 重庆 400715)
    (3三峡库区生态环境教育部重点实验室 重庆 400715)
  • 投稿日期:2011-01-21 修回日期:2011-03-11 发布日期:2011-03-24
  • 通讯作者: 傅相锴 E-mail:changwei@swu.edu.cn

Synthesis and Application of New Alkoxyl-Modified Immobilized Chiral Salen Mn(III) Complexes in Asymmetric Epoxidation of Unfuntionalized Olefins

Wang Changwei1,2 Fu Xiangkai*,1,2,3 Huang Jing1,2   

  1. (1 Research Institute of Applied Chemistry, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715)
    (2 Key Laboratory of Applied Chemistry of Chongqing Municipality, Chongqing 400715)
    (3 Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, Chongqing 400715)
  • Received:2011-01-21 Revised:2011-03-11 Published:2011-03-24
  • Contact: Xiang-Kai FU E-mail:changwei@swu.edu.cn

New types of supported catalysts were obtained by anchoring chiral salen Mn(III) complex on a series of alkoxyl-modified zirconium poly(styrene-phenylvinyl phosphonate)-phosphate (ZPS-PVPA) in the text. All the prepared catalysts were characterized by FT-IR, UV-vis, XPS, SEM, TG and elemental analysis. The catalytic capabilities were investigated with m-CPBA as an oxidant and with indene and α-methylstyrene as substrates for asymmetric epoxidation of unfunctionalized olefins. Contrary to most of the literatures reported, the results showed that the heterogeneous catalysts 3a3f exhibited excellent catalytic activities, and their conversions and ee values increased remarkably in the absent of N-methyl- morpholine N-oxide (NMO) under the same catalytic conditions. Futhermore, these catalysts were easily separated and reused ten times without significant loss of activities.

Key words: zirconium poly(styrene-phenylvinyl phosphonate)-phosphate, alkoxyl-modified, Salen Mn(III), unfunctionalized olefins, asymmetric epoxidation