催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (10): 992-996.

• 研究论文 • 上一篇    下一篇

(+)-α-苯乙胺磷钨杂多化合物的合成、表征和催化不对称环氧化性能

王丽丽1,武启华2,王向宇1   

  1. 1 郑州大学化学系工业催化研究所, 河南郑州 450052; 2 厦门大学化学系, 福建厦门 361005
  • 收稿日期:2008-10-25 出版日期:2008-10-25 发布日期:2008-10-25

Synthesis and Characterization of (+)-α-Phenylethanammonium Phosphotungstate and Its Catalytic Performance for Asymmetric Epoxidation

WANG Lili1, Wu Qihua2, WANG Xiangyu1*   

  1. 1 Institute of Industrial Catalysis, Department of Chemistry, Zhengzhou University, Zhengzhou 450052, Henan, China; 2 Department of Chemistry, Xiamen University, Xiamen 361005, Fujian, China
  • Received:2008-10-25 Online:2008-10-25 Published:2008-10-25

PDF

1424

摘要： 以Keggin型12-磷钨酸和(+)-α-苯乙胺为原料,通过水热法合成了具有Keggin结构的(+)-α-苯乙胺磷钨酸盐(C8H12-N)3PW12O40. 通过红外光谱、核磁共振波谱、紫外光谱、元素分析和热重分析等技术对合成产物进行了结构、组成和热稳定性的表征和考察,证实了合成产物为(+)-α-苯乙胺磷钨酸盐. 以顺丙烯磷酸-α-苯乙胺盐环氧化合成(1R,2S)-环氧丙基磷酸-α-苯乙胺盐为探针反应,考察了(C8H12N)3PW12O40催化不对称环氧化性能. 结果表明,在催化剂用量为2.00%和反应温度为50 ℃时,产物环氧丙基磷酸苯乙胺盐的收率为64%, (1R, 2S)-环氧丙基磷酸苯乙胺盐的对映选择性ee值为10.8%.

关键词: 水热合成, (+)-&alpha, -苯乙胺磷钨酸盐, 顺丙烯磷酸-&alpha, -苯乙胺盐, 不对称环氧化

Abstract: A new inorganic-organic hybrid polyoxotungstate with optical activity, (+)- α-phenylethanammonium phosphotungstate (C8H12-N)3PW12O4 0, was synthesized by a mild hydrothermal technique, and its structure was cha racterized by various methods. The catalyst showed good activity for the epoxidation of α-phenylethanammonium-cis-1-propenylphosphonate into α-phenylethanammonium-cis-1,2-epoxypropyl phosphotate.

Key words: hydrothermal synthesis, (+)-&alpha, -phenylethanammonium phosphotungstate, &alpha, -phenylethanammonium-cis-1-propenylphosphonate, asymmetric epoxidation