화학공학소재연구정보센터
Journal of the American Chemical Society, Vol.137, No.37, 11912-11915, 2015
Iridium-Catalyzed Enantioselective Fluorination of Racemic, Secondary Allylic Trichloroacetimidates
The Ir-catalyzed enantioselective fluorination of racemic, branched allylic trichloroacetiinidates with Et3N center dot 3HF is a mild and efficient route for selective incorporation of fluoride ion into allylic systems. We herein describe the asymmetric fluorination of racemic, secondary allylic electrophiles with Et3N center dot 3HF using a chiral-diene-ligated Ir complex. The methodology enables the formation of acyclic fluorine-containing compounds in good yields with excellent levels of asymmetric induction and overcomes the limitations previously associated with the eiiantioselective construction of secondary allylic fluorides bearing alpha-linear substituents.