Ruthenium-Catalyzed Asymmetric Transfer Hydrogenation of 1-Aryl-Substituted Dihydroisoquinolines: Access to Valuable Chiral 1-Aryl-Tetrahydroisoquinoline Scaffolds
Give me an H! Give me another H! The first general and highly enantioselective Ru‐catalyzed transferhydrogenation of a wide range of 1‐aryl‐substituted 1,2,3,4‐dihydroisoquinolines is described. This atom‐economic reaction proceeds under mild conditions, allowing rapid access to the corresponding biologically relevant 1‐aryl‐tetrahydroisoquinoline derivatives, in high yields and enantioselectivities
A convenient and general asymmetric transferhydrogenation of a wide array of 1-aryl-3,4-dihydroisoquinoline derivatives using a [RuIICl(η6-benzene)TsDPEN] complex in combination with a 5:2 HCOOH–Et3N azeotropic mixture as a hydrogen source was developed. Under mild reaction conditions, the described catalytic transformation secured a practical synthetic access to the corresponding valuable chiral