Journal
SYNTHETIC COMMUNICATIONS
Volume 40, Issue 21, Pages 3259-3267Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00397910903398676
Keywords
Lewis acid; Michael addition; renewable catalyst; scandium trifluoromethanesulfonate; water
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Funding
- National High Technology Research and Development Program of China (863 Program) [2006AA09Z446]
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A catalytic amount of scandium trifluoromethanesulfonate [Sc(OTf)3] (2.5mol%) was used to catalyze the Michael addition of indoles to nitroolefins in water to afford the corresponding 3-alkylated indoles in good to excellent yields. The short reaction times, excellent yields, and renewability of the catalyst are noteworthy.
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