Ruthenium-Catalyzed Highly Regioselective Cyclization of Ketoximes with Alkynes by C–H Bond Activation: A Practical Route to Synthesize Substituted Isoquinolines
摘要:
Aromatic and heteroaromatic ketoximes underwent cyclization with alkynes in the presence of a catalytic amount of [{RuCl2(p-cymene)}(2)] and NaOAc to give isoquinoline derivatives in good to excellent yields in a highly regioselective manner.
Substituted aromaticketoximes reacted efficiently with allylicacetates in the presence of [RuCl2(p‐cymene)]2} and AgSbF6 in 1,2‐dichloroethane at ambient temperature, providing ortho‐allyl aromaticketoximes in a highly regioselective manner without an oxidant. In the reaction, the acetate group of allyl acetate acts as a base to activate the CH bond of aromatics. Later, ortho‐allyl aromatic ketoximes