Journal
SYNLETT
Volume 32, Issue 7, Pages 701-707Publisher
GEORG THIEME VERLAG KG
DOI: 10.1055/a-1310-5213
Keywords
anion phase-transfer catalysis; chiral Co(III) complex; Bronsted acid; indole derivatives; halocyclization
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Funding
- National Natural Science Foundation of China (NSFC) [21672002]
- Anhui Provincial Natural Science Funds for Distinguished Young Scholar [1908085J07]
- Shennong Scholar Program of Anhui Angricultural University
- National Undergraduate Training Program for Innovation and Entrepreneurship [202010364039]
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Highly enantioselective halocyclization reactions of indole derivatives, including tryptophols and tryptamines, have been achieved with anionic chiral Co(III) complexes and 1,3-dihalohydantoins (as little as 0.50 equiv). 3-Halo-fused indolines were obtained in excellent yields (up to 98%) and enantioselectivities (up to 98% ee), employing the chiral anion phase-transfer-catalysis strategy.
Highly enantioselective halocyclization reactions of indole derivatives, including tryptophols and tryptamines, have been accomplished by means of anionic chiral Co(III) complexes and 1,3-dihalohydantoins (as little as 0.50 equiv). 3-Halo-fused indolines were obtained in excellent yields (up to 98%) and enantioselectivities (up to 98% ee), employing the chiral anion phase-transfer-catalysis strategy.
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