Steric Tuning of the Amidomonophosphane-Rhodium(I) Catalyst in Asymmetric Addition of Arylboroxines to N-Phosphinoyl Aldimines
摘要:
Highly enantioselective rhodium-catalyzed addition of arylboroxines to N-phosphinoylaldi mines was realized by the steric tuning of a cliphenylphosphorus moiety to a di(o-tolyl) phosphorus moiety of a chiral amidomonophosphane. The presence of MS 4 A in a 5:1 solvent mixture of dioxane-propanol was essential to afford the corresponding diarylmethylamines in high yield.