Isoquinoline N-Oxide Synthesis under Pd-Catalysed C-H Activation/Annulation Processes
摘要:
An oxime directed C-H activation-annulation reaction for the selective synthesis of a range of isoquinoline N-oxides has been developed. Under palladium-catalyzed acid-assisted conditions, the reaction undergoes concerted metallation deprotonation followed by carbopalladation and transmetallation to give polysubstituted isoquinoline N-oxides in moderate to good yields.
Nickel-Catalyzed Cyclization of ortho-Iodoketoximes and ortho-Iodoketimines with Alkynes: Synthesis of Highly Substituted Isoquinolines and Isoquinolinium Salts
A convenient method for the synthesis of highly substituted isoquinolines and isoquinolinium salts by the nickel‐catalyzed cyclization of ortho‐haloketoximes and ‐ketimines, respectively, with alkynes is described. The reaction of ortho‐haloketoximes and various alkynes in the presence of [Ni(PPh3)2Br2] and zinc powder in a mixture of acetonitrile and tetrahydrofuran at 80 °C for 15 hours gave 1,3
An oxime directed C-H activation-annulation reaction for the selective synthesis of a range of isoquinoline N-oxides has been developed. Under palladium-catalyzed acid-assisted conditions, the reaction undergoes concerted metallation deprotonation followed by carbopalladation and transmetallation to give polysubstituted isoquinoline N-oxides in moderate to good yields.