Arylazo Sulfones as Nonionic Visible-Light Photoacid Generators
Lorenzo Di Terlizzi, Angelo Martinelli, Daniele Merli, Stefano Protti, Maurizio Fagnoni
Abstract
The selective visible-light-driven generation of a weak acid (sulfinic acid, in nitrogen-purged solutions) or a strong acid (sulfonic acid, in oxygen-purged solutions) by using shelf-stable arylazo sulfones was developed. These sulfones were then used for the green, smooth, and efficient photochemical catalytic protection of several (substituted) alcohols (and phenols) as tetrahydropyranyl ethers or acetals.
Topics & Concepts
ChemistrySulfinic acidSulfonic acidVisible spectrumPhenolsPhotochemistryCatalysisOxygenOrganic chemistryNitrogenPhysicsOptoelectronicsSulfur-Based Synthesis TechniquesRadical Photochemical ReactionsAdvanced Photocatalysis Techniques