Abstract
Binaphthyl-based chiral sulfonimide (CSI) is demonstrated for the first time to be an efficient, strong Brønsted acid in asymmetric organocatalysis. A series of CSIs were synthesized and screened in the asymmetric Friedel-Crafts alkylation of indoles with imines. Good to excellent yields and enantioselectivities have been achieved. It was proved that it was crucial to wash the CSI catalyst with HCl before use.
Original language | English |
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Pages (from-to) | 7141-7147 |
Number of pages | 7 |
Journal | Journal of Organic Chemistry |
Volume | 76 |
Issue number | 17 |
DOIs | |
Publication status | Published - 2 Sept 2011 |
Scopus Subject Areas
- Organic Chemistry