Cover Feature: Photochemistry of a 9‐Dithianyl‐Pyronin Derivative: A Cornucopia of Reaction Intermediates Lead to Common Photoproducts (ChemPlusChem 10/2020)

The Cover Feature shows the interrelationships of some of the key intermediates generated upon irradiation of a 9-dithianyl-pyronin derivative with yellow light. This complex photochemical oxidative transformation leads to a 9H-xanthen-9-one derivative, formic acid, and carbon monoxide as the main photoproducts. This work provides insights into the (photo)reactivity of substituted xanthene/pyronin dyes, the photobleaching of which can be a serious obstacle in their applications. More details can be found in the Full Paper by J. Roithová, P. Klán, and co-workers. Graphic designed by Marek Martínek.