Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (9): 1908.doi: 10.7503/cjcu20140052

• Organic Chemistry • Previous Articles     Next Articles

Enantioselective Aldol Reaction of Acetone and Benzofuran-2,3-diones

LI Xin1,*(), HAN Yu1, TAN Boxuan1, WANG Bin2, CHENG Jinpei1   

  1. 1. State Key Laboratory of Elemento-organic Chemistry, Department of Chemistry, Nankai University, Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300071, China
    2. Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-organic Hybrid Functional Material Chemistry, Ministry of Education, College of Chemistry, Tianjin Normal University, Tianjin 300387, China
  • Received:2014-01-16 Online:2014-09-10 Published:2019-08-01
  • Contact: LI Xin E-mail:xin_li@nankai.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21172112, 21102101)

Abstract:

The 3-substituted 3-hydroxybenzofuran-2-one unit is encountered in a large variety of natural pro-ducts with a wide spectrum of biological activities. Therefore, development of new methodologies to the construction of chiral quaternary center at the 3-position of benzofuran-2-one compounds were highly desired. A highly enantioselective Aldol reaction of benzofuran-2,3-ones with ketone catalyzed by N-(2-thiophenesulfonyl)prolinamide through enamine activation strategy was developed. As a result, a number of chiral 3-hydro-xyl substituted benzofuran-2-ones derivatives were synthesized with very good yields(up to 96%) and mode-rate to good enantioselectivities(up to 91% e.e.). This methodology substantially broadens the benzofuranone chemistry and offer functionalized chiral products.

Key words: Benzofuran-2, 3-one, Chiral carbon center, Asymmetric catalysis, Aldol reaction

CLC Number: 

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