Chemical Research in Chinese Universities ›› 2018, Vol. 34 ›› Issue (2): 180-185.doi: 10.1007/s40242-018-7364-2

• Articles • Previous Articles     Next Articles

Role of Adamantane Amide Based on L-Proline Double-H Potential Organocatalyst in Aldol Reaction with Product Separated via Host-guest Interaction

WANG Rui1, WEI Zhonglin1, GUO Jing1, FENG Yusha1, XU Enjie1, DUAN Haifeng1, LIN Yingjie1, YANG Qingbiao1, DU Jianshi2, LI Yaoxian1   

  1. 1. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. China-Japan Union Hospital of Jilin University, Changchun 130031, P. R. China
  • Received:2017-11-14 Revised:2017-12-05 Online:2018-04-01 Published:2017-12-18
  • Contact: YANG Qingbiao,E-mail:yangqb@jlu.edu.cn;DU Jianshi,E-mail:dujianshi3043@163.com E-mail:yangqb@jlu.edu.cn;dujianshi3043@163.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21174052) and the Natural Science Foundation of Jilin Province of China(Nos.20160101311JC, 20170101105JC).

Abstract: Chiral organocatalysts of 4-adamantane amide based on L-proline with double hydrogen potential were synthesized and used in asymmetric aldol reactions. The reactions were evaluated in toluene under -20℃. A series of aldol products was obtained from moderate to good yields(up to 98%) with excellent diastereoselectivities(up to >99:1) and enantioselectivities(up to >99%). The aldol products in the system were separated by α-cyclodextrin via host-guest interaction and determined by chiral HPLC. The catalyst could be reused up to five times. The 4-substitution position played an important role in diastereoselectivity and enantioselectivity.

Key words: Prolinamide, Double hydrogen, Aldol reaction, Recycle, Cyclodextrin