Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (1): 62-67.doi: 10.1007/s40242-016-5245-0

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4-Dimethylaminopyridine-catalyzed Cascade Reaction for Efficient Synthesis of Naphthofurans

FAN Chenli1,2, HE Xinwei2, LIAO Kaisheng2, WANG Cui'e2, SHANG Yongjia2   

  1. 1. Department of Material Engineering, Wuhu Institute of Technology, Wuhu 241003, P. R. China;
    2. Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecule-based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
  • Received:2015-06-19 Revised:2015-08-27 Online:2016-02-01 Published:2015-10-19
  • Contact: SHANG Yongjia E-mail:shyj@mail.ahnu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.21172001, 21372008), the Program for the New Century Excellent Talents in University of China(No.NCET-10-0004) and the Natural Science Foundation of Anhui Province of China(No.1308085QB39).

Abstract:

A convenient and efficient method was developed for the synthesis of naphtho[2,1-b]furans via 4-dimethylaminopyridine(DMAP)-catalyzed cascade reaction of 2-hydroxy-1-naphthaldehydes and α-halogenated ketones in moderate to good yields in the presence of Na2CO3 at 80℃ for 6 h. The mechanism for this process was briefly discussed with a tentative catalytic cycle proposed. Moreover, this method features organocatalysts and high step-economy, which makes it practical and attractive.

Key words: 4-Dimethylaminopyridine, α-Halogenated ketone, Cascade reaction, Naphthofuran, Organocatalysis