Intramolecular photoreactions of thiohomophthalimides with an alkenyl group in their N-side chain. Regioselective synthesis of heterocycle-fused isoquinoline derivatives through [2+2] photocycloaddition

摘要

Upon irradiation, thiohomophthalimides with an alkenyl group in their N-side chain or at the benzylic position give tricyclic isoquinoline derivatives through regioselective intramolecular [2+2] cycloaddition or Norrish type II reaction, respectively, in good yields.