A Direct Intermolecular Cross-Benzoin Type Reaction: N-Heterocyclic Carbene-Catalyzed Coupling of Aromatic Aldehydes with Trifluoromethyl Ketones
作者:Dieter Enders、Alexander Henseler
DOI:10.1002/adsc.200900247
日期:2009.8
A direct intermolecular cross-benzoin-type condensation catalyzed by an N-heterocyclic carbene has been developed. The cross-coupling of commercially available aromaticaldehydes and trifluoromethyl ketones results in α-hydroxy-α-trifluoromethyl ketones bearing a quaternary stereocenter with excellent chemoselectivity and good to excellent yields.