Palladium (II)-catalyzed heterocyclisation of 8-arylethynyl-1, 2, 3, 4-tetrahydroquinolines: a facile route to 2-aryl-5, 6-dihydro-4H-pyrrolo [3, 2, 1-ij] quinoline derivatives
Dihydropyrroloquinolines have been synthesized reacting 8-arylethynyl-1, 2, 3, 4- tetrahydroquinolines in the presence of palladium (II) chloride catalyst. Heteroannulation has been achieved in good yields and tolerates substituents on the tetrahydroquinoline, including bromo, cyano, and ester.
