title: A clean and selective radical homocoupling employing carboxylic acids with titania photoredox catalysis.
abstract: A titania photoredox catalysis protocol was developed for the homocoupling of C-centered radicals derived from carboxylic acids. Intermolecular reactions were generally efficient and selective, furnishing the desired dimers in good yields under mild neutral conditions. Selective cross-coupling with two acids proved unsuccessful. An intramolecular adaptation enabled macrocycles to be prepared, albeit in modest yields.
authors.affiliation: University of St. Andrews , EaStCHEM School of Chemistry, St. Andrews, Fife, KY16 9ST, U.K.
authors.forename: David W
authors.initials: DW
authors.lastname: Manley
authors.forename: John C
authors.initials: JC
authors.lastname: Walton