I-010

Edvinas Orentas

edvinas.orentas@chf.vu.lt

Vilnius University, Lithuania

New Reactivity Mode in Acridinium Photocatalysis

Acridinium photocatalysis represents a significant advancement in the field of photoredox catalysis, primarily due to its utilization of visible light to drive chemical reactions. This approach has evolved into a useful platform for the development of synthetic methodologies, enabling the efficient functionalization of molecules under mild conditions. The quest for sustainable and environmentally benign alternatives has led to the exploration and adoption of organic photocatalysts, among which acridinium-based catalysts have emerged as potent option. 

In conventional acridinium photocatalysis, the light-enabled shuffling of electron to and from acridinium constitutes the basis for redox-neutral catalysis. To extend the scope, the external hydrogen atom transfer (HAT) manifold can be incorporated into the catalytic cycle. Herein we demonstrate how careful molecular design of acridinium allows an unorthodox reactivity mode.