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Chiral bifunctional thiourea-catalyzed enantioselective aldol reaction of trifluoroacetaldehyde hemiacetal with aromatic ketones
Authors:Jing Nie  Dong-Hua Zheng  Shumin Cui
Institution:a Department of Chemistry, Tianjin University, Tianjin 300072, China
b Department of Chemistry, Henan Agricultural University, Zhengzhou 450002, China
Abstract:In the presence of saccharide-derived bifunctional amine-thiourea catalysts, the direct aldol condensation of trifluoroacetaldehyde methyl hemiacetal with aromatic ketones proceeds to produce (R)-β-hydroxy β-trifluoroalkyl ketones in low to moderate yields with good enantioselectivities.
Keywords:Bifunctional organocatalyst  Saccharide  Thiourea  Aldol  Trifluoroacetaldehyde
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