Аннотация:
The title reactions afforded ethyl 4-(arylmethylene)-6-oxo-2-aryl-4,5,6,7-tetrahydrobenzofuran-5-carboxylates and ethyl 4-(arylmethylene)-6-oxo-2-aryl-4,5,6,7-tetrahydro-1H-indole-5-carboxylates the structures of which were confirmed by IR and 1H NMR spectroscopy.