Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (4): 604-608.doi: 10.1007/s40242-019-9046-0

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Enantioselective Addition of Allyltrichlorosilane to Bulky-substituted Aldehydes Catalyzed by Axial N,N'-Dioxide Pivalate

WANG Jie1, WU Shijie2, WANG Xiaoke3, LI Longfei1, YANG Kan1, ZHU Huajie1, LI Wan1, LIU Li2   

  1. 1. College of Pharmacy, Hebei University, Baoding 071002, P. R. China;
    2. College of Medicine, Hebei University, Baoding 071002, P. R. China;
    3. College of Chemistry, Hebei University, Baoding 071002, P. R. China
  • Received:2019-02-16 Revised:2019-04-03 Online:2019-08-01 Published:2019-08-01
  • Contact: ZHU Huajie, LIU Li E-mail:hjzhu2017@163.com;ll1113-work@163.com
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21877025), the Scientific Research Foundations of Hebei Educational Committee, China(Nos.QN2017021, ZD2017004) and the "Talent Program" of Hebei University, China.

Abstract: Allylation of bulky-substituted aromatic aldehydes with allyltrichlorosilanes were catalyzed by axial biscarboline N,N'-dioxide esters with high enantioselectivities up to 92% e.e. for 1-(4-chlorophenyl)-9-methyl-9H-pyrido[3,4-b]indole-3-carbaldehyde and 90% e.e. for 1-(3-methoxyphenyl)-9-methyl-9H-pyrido[3,4-b]indole-3-carbaldehyde, respectively. Total 22 aldehydes were tested with good yields and enantioselectivities. Catalyst 4f exhibited good catalytic enantioselectivity.

Key words: Enantioselective allylation, Biscarboline N,N'-dioxide pivalate, Driving-force, Catalytic space