Zi Yang

Photocatalytic Four-Component Sulfonylation/ Ipso -Spirocyclization of N -Arylpropiolamides with Thianthrenium Salts, DABSO and H2O: Access to 3-Sulfonyl-Azaspiro[4.5]trienones

Abstract A visible-light-induced sodium fluorescein-catalyzed four-component cascade reaction of N-arylpropiolamides, aryl thianthrenium salts, DABSO, and H2O has been developed, providing efficient access to diverse 3-sulfonyl-azaspiro[4.5]trienones in moderate to good yields. T...

Energy-Transfer-Driven[2 + 2] Cycloaddition: Synthesisof Cyclobutane-Fused Tetracycles from Indenes and Maleimides

Abstract Molecular skeletons containing fused cyclobutane rings are of significant value in drug discovery as they can increase the fraction of sp3 carbons (Fsp3) and impart conformational rigidity. Herein, we report a visible-light photocatalytic strategy for the intermolecular...