An efficient rhodium-catalyzed oxidative coupling reaction has been developed that
gives high yields of multisubstituted isoquinolines from easily accessible aryl hydrazones
and internal alkynes. Indenone hydrazone can also be synthesized in high yield from
the corresponding benzaldehyde hydrazone by using this approach.
Key words
alkynes - cyclization - hydrazones - heterocycles - rhodium - catalysis