A Modular Approach to α-Arylated Carbonyl Compoundsvia Indium Tris(bistriflylamide)-Catalyzed Regioselective Addition of β-Ketoesters to 1,3-Diynes
作者:Masaharu Nakamura、Kohei Endo、Eiichi Nakamura
DOI:10.1002/adsc.200505206
日期:2005.10
addition of β-keto esters to conjugated diynes and a palladium-catalyzedbenzannulation reaction. Indium tris(bistriflylamide), In(NTf2)3, was found to be an efficient catalyst for the first addition reaction of β-keto esters to diynes. The reaction proceeds with perfect regioselectivity to give conjugatedenynes in high yield. The second palladium-catalyzedbenzannulation proceeds in high to excellent