A rhodium-catalyzed
annulation between ethyl benzimidates and α-
aroyl sulfur ylides was developed, affording a series of pyrano[4,3,2-<i>ij</i>]isoquinoline derivatives in moderate to good yields with
good functional group compatibility. The procedure featured dual <i>ortho</i>-C–H functionalization and dual cyclization
in one pot. The optoelectronic properties of those fused heteroarenes
were tested by UV/vis and fluorescence spectrometers
