NOVEL PICOLINAMIDE-CINCHONA ORGANOCATALYSTS AND DERIVATIVES
申请人:UNIVERSIDADE DE ÉVORA
公开号:US20160236184A1
公开(公告)日:2016-08-18
The present application describes a novel type of picolinamide-cinchona organocatalyst that allows for the successful transformation of ketimines to chiral amines with very high enantioselectivities and with the highest TOFs reported for any particular organocatalyst to date. These organocatalysts have also been immobilized to a variety of solid supports, including magneto-nanoparticles.
stereoselectivity. The applicability of the solid-supported catalyst of choice to the reduction of different imines was also demonstrated. Additionally, for the first time, a catalytic reactor containing a polymer-immobilized chiral picolinamide has been employed for the stereoselectivereduction of imines with trichlorosilane under continuous flow conditions.