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Photohomolysis and Photoheterolysis in Aryl Sulfonates and Aryl Phosphates.

The photochemistry of aryl sulfonates and phosphates (ArOX) has a role in different respects including the application in eco-sustainable arylations, in the design of innovative photoacid generators and in biological applications. However, the fate of the photoreaction depends on several factors namely the nature of the sulfonate/phosphate group, the substituents present on the aromatic ring and the polarity of the medium. Aim of this work is the photophysical investigation of selected aryl sulfonates and phosphates by laser flash photolysis experiments, to have insights on their photoreactive pathways for their possible applications. The judicious choice of the leaving group and on the nature of the substituents on the aromatic ring may lead either to a photohomolysis of the ArO-X bond or a photoheterolysis of the Ar-OX bond.