[24] Subsequently, the groups of Cui, Xu, and Zhu developed visible-light-induced cascade (spiro)cyclizations of biaryl or indolyl ynones, alkyne-tethered cyclohexadienones, and 1,6-enynes, respectively, with diaryl diselenides under photocatalyst-free conditions. Photochemical reaction, visible light, cascade reaction, spirocyclization, spiroindolequinoline selenides, diselenides The reaction was found to be compatible with various substituted diphenyl diselenides B 2b b - B l b , but with a lower efficiency than with diphenyl diselenide ( B 2a b ), giving the corresponding products B 3ab b - B al b in moderate yields of 41-54% under the standard conditions. Keywords: photochemical reaction; visible light; cascade reaction; spirocyclization; spiroindolequinoline selenides; diselenides EN photochemical reaction visible light cascade reaction spirocyclization spiroindolequinoline selenides diselenides 2042 2046 5 10/09/23 20231024 NES 231024 Graph Organoselenides, especially selenylated annulated compounds, are highly valuable chemicals that have attracted considerable attention in medicinal chemistry, [1][2][3][4][5] materials science, [6] and organic synthesis [9] due to their unique biological activities and versatile synthetic applications. [Extracted from the article]