title: Visible Light Photorelease of Carboxylic Acids via Charge-Transfer Excitation of N-Methylpyridinium Iodide Esters.
abstract: Iodide contrast sensitization to direct irradiation of charge transfer salts incurs carboxylic acid release via visible light absorption. The photochemical reduction of N-methyl-4-pyridinium iodide esters to release carboxylic acids is examined using (1)H NMR analysis. Photolysis reactions are carried out under mild, biphasic solvent conditions using a household LED lamp. Carboxylic acid release is reported in high yields, and the viability of this method for synthetic chemistry is demonstrated through a macroscale reaction.
authors.affiliation: Department of Chemistry, University of Maryland, College Park, Maryland 20742, United States.
authors.forename: David J
authors.initials: DJ
authors.lastname: Kunsberg
authors.affiliation: Department of Chemistry, University of Maryland, College Park, Maryland 20742, United States.
authors.forename: Allison H
authors.initials: AH
authors.lastname: Kipping
authors.affiliation: Department of Chemistry, University of Maryland, College Park, Maryland 20742, United States.
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Falvey