title: Photoassisted oxidation of ruthenium(II)-photocatalysts Ru(bpy)3(2+) and Ru(bpz)3(2+) to RuO4: orthogonal tandem photoredox and oxidation catalysis.
abstract: Common photoredox catalysts Ru(bpy)3(2+) and Ru(bpz)3(2+) are rapidly converted into Ruthenium(viii)-oxide through continuous visible light irradiation in the presence of NaIO4 or H5IO6. This hitherto unreported photoassisted catalyst oxidation was utilized in the development of tandem catalytic protocols which combine a photoredox reaction with a subsequent RuO4-mediated oxidation. The new concept was demonstrated through one-pot radical cation Diels-Alder (RCDA)/1,5-diene cyclisation sequences.
authors.affiliation: University of Hamburg, Department of Chemistry - Institute of Organic Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany. malte.brasholz@chemie.uni-hamburg.de.
authors.forename: Dirk
authors.initials: D
authors.lastname: Alpers
authors.affiliation: University of Hamburg, Department of Chemistry - Institute of Organic Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany. malte.brasholz@chemie.uni-hamburg.de.
authors.forename: Malte
authors.initials: M
authors.lastname: Gallhof
authors.affiliation: University of Hamburg, Department of Chemistry - Institute of Organic Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany. malte.brasholz@chemie.uni-hamburg.de.
authors.forename: Christian B W
authors.initials: CB
authors.lastname: Stark
authors.affiliation: University of Hamburg, Department of Chemistry - Institute of Organic Chemistry, Martin-Luther-King-Platz 6, 20146 Hamburg, Germany. malte.brasholz@chemie.uni-hamburg.de.
authors.forename: Malte
authors.initials: M
authors.lastname: Brasholz