Unveiling the Reactivity of Cyclic Dithioacetals Under Visible Light Photoredox Catalysis via C‒S Bond Cleavage

Abstract

Over the years photoredox catalysis has gained a great importance and the same has been explored for many transformations. Different organosulfur compounds have been employed for different transformations using photoredox catalysis. Interestingly, dithioacetals in general and dithianes and dithiolanes in particular have never been explored for synthetic transformations via the selective cleavage of C‒S bond under visible light photoredox catalysis. Herein, this thesis presents the systematic exploration of unusual reactivities of cyclic dithioacetals by the selective and controlled cleavage of C‒S bond of cyclic dithioacetal via visible light photoredox catalytic conditions under oxygen atmosphere to access useful and interesting molecular scaffolds. All these strategies did not rely on transition metal reagents, external oxidizing agents and strong bases.