Journal
TETRAHEDRON-ASYMMETRY
Volume 26, Issue 23, Pages 1382-1387Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetasy.2015.10.006
Keywords
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Funding
- National Natural Science Foundation of China [21076035, 20972022]
- Program for New Century Excellent Talents in University [NCET-11-0053]
- Fundamental Research Funds of the Central Universities [DUT13ZD202]
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By employing a natural cinchona alkaloid as a catalyst, the enantioselective tandem Michael addition/oxidation of 4-substituted pyrazol-5-ones with p-benzoquinones was realized. The reaction afforded a wide range of 4,4-disubstituted pyrazol-5-ones with moderate to good yields (up to 72%) and moderate to good enantioselectivities (up to 99%). (C) 2015 Elsevier Ltd. All rights reserved.
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