Synthesis of isoquinoline derivatives using ROM-RCM of cyclobutene-yne

J Org Chem. 2005 Feb 4;70(3):1066-9. doi: 10.1021/jo048214c.

Abstract

Isoquinoline derivatives were synthesized from cyclobutenylmethylamine derivatives having an alkyne moiety in a tether using a second-generation ruthenium carbene complex under ethylene gas in good yields.