title: Steady-state and time-resolved studies on the formation of skatolyl radicals photosensitized by 2-benzoylthiophene.
abstract: Quenching of the excited triplet state of 2-benzoylthiophene (BT) by 3-methylindole (CH3InH) leads to several neutral radicals resulting from formal hydrogen-atom abstraction. The transient absorption spectra of the BT ketyl radical (BTH) and the N-centered (CH3In) radical are directly detected by laser flash photolysis. From the differences between the spectra in the presence and the absence of oxygen, the C-centered skatolyl radical (CH2InH) is also observed. Accordingly, product studies demonstrate the formation of homodimers as well as cross-coupling products. They include BTH dimers (BTH-BTH, two stereoisomers), indolyl dimers (three different products) and products derived from reaction of skatolyl and BT ketyl radicals.
authors.affiliation: Departamento de Química Orgánica/Instituto de Ciencia Molecular, Universidad de Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Valencia, Spain. julia.perez@uv.es
authors.forename: Julia
authors.initials: J
authors.lastname: Pérez-Prieto
authors.forename: Raquel E
authors.initials: RE
authors.lastname: Galian
authors.forename: Maria C
authors.initials: MC
authors.lastname: Morant-Miñana
authors.forename: Miguel A
authors.initials: MA
authors.lastname: Miranda