Journal
ORGANIC LETTERS
Volume 17, Issue 5, Pages 1142-1145Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b00080
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- Ministry of Science and Technology of Republic of China [102-2113-M-003-006-MY2]
- National Taiwan Normal University
- ScinoPharm Taiwan
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The asymmetric conjugate addition of arylboronic acids to substituted and unsubstituted beta-pyrazol-1-yl (E)-tert-butyl acrylates 4 catalyzed by 5 mol % of the Rh(I)/diene 2a catalyst provided the corresponding addition products in 44-98% yield and 91->99.5% ee. The method was applied to the formal synthesis of (3S)-3-aryl-3-(pyrazol-1-yl)propanoic acid 1b with agonistic activity toward the human GPR40 G-protein coupled receptor.
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