2-Substituted-3H-indol-3-one-1-oxides: Preparation and radical trapping properties was written by Boyer, Jeremie;Bernardes-Genisson, Vania;Farines, Vincent;Souchard, Jean-Pierre;Nepveu, Francoise. And the article was included in Free Radical Research in 2004.Computed Properties of C23H26BrP This article mentions the following:
2-Alkyl and 2-aryl substituted-3H-indol-3-one-1-oxides were prepared and evaluated for their radical trapping properties. Spin trapping and ESR experiments demonstrate the ability of these indolone-1-oxides to trap hetero- and C-centered radicals. The most stable spin adducts (lifetime of several hours) were obtained with 2-alkyl substituted nitrones, e.g. 6-ethyl-7H-[1,3]dioxolo[4,5-f]indol-7-one 5-oxide and 2-isobutyl-3H-indol-3-one 1-oxide. These two nitrones are also sensitive to redox reactions in solution Therefore this indolone-1-oxide series lacking a 灏?H atom gives rise to highly stable adducts with free radicals. In the experiment, the researchers used many compounds, for example, Isopentyltriphenylphosphonium bromide (cas: 28322-40-9Computed Properties of C23H26BrP).
Isopentyltriphenylphosphonium bromide (cas: 28322-40-9) belongs to organobromine compounds. Most of the natural organobromine compounds are produced by marine organisms, and several brominated metabolites with antibacterial, antitumor, antiviral, and antifungal activity have been isolated from seaweed, sponges, corals, molluscs, and others. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Computed Properties of C23H26BrP
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary