Rhodium-Catalyzed Dehydrogenative
Coupling of Phenylheteroarenes
with Alkynes or Alkenes
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Abstract
Benzo-fused
tri- to heptacyclic heteroarenes were effectively constructed
by the rhodium-catalyzed dehydrogenative coupling of phenylheteroarenes
with alkynes. Using alkenes as coupling partners, dehydrogenative
alkenylation took place selectively on the phenyl moiety of phenylheteroarenes.
Several experiments with deuterium-labeled substrates indicated that
double C–H bond cleavages take place even in the reaction with
alkenes