Abstract
Three-component Mannich reactions of aromatic aldehydes, anilines and acetophenone were efficiently catalyzed by a recyclable carboxyl-functionalized ionic liquid ([cmmim][BF4]) in aqueous [bmim][BF4] under mild conditions. Twelve β-aminoketones were successfully synthesized in high yields and the catalyst can be recycled at least 6 times without significant loss of activity.
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Li, J., Peng, Y. & Song, G. Mannich reaction catalyzed by carboxyl-functionalized ionic liquid in aqueous media. Catal Lett 102, 159–162 (2005). https://doi.org/10.1007/s10562-005-5849-3
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DOI: https://doi.org/10.1007/s10562-005-5849-3