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Publikováno v:
Journal of the American Chemical Society. 138:2500-2503
The synthesis and isolation of stable main group radicals remains an ongoing challenge. Here we report the application of frustrated Lewis pair chemistry to the synthesis of boron-containing radicals. H2 activation with polyaromatic diones and B(C6F5
Autor:
Johannes A. M. Hepperle, Brooks J. Culotta, Gerhard Erker, Allan Jay P. Cardenas, Stefan Grimme, Jeffrey L. Petersen, Roland Fröhlich, Armido Studer, Timothy H. Warren, Gerald Kehr, Constantin G. Daniliuc, Annika Stute, Birgitta Schirmer, Muhammad Sajid
Publikováno v:
Journal of the American Chemical Society
The intramolecular cyclohexylene-bridged P/B frustrated Lewis pair [Mes(2)P-C(6)H(10)-B(C(6)F(5))(2)] 1b reacts rapidly with NO to give the persistent FLP-NO aminoxyl radical 2b formed by P/B addition to the nitrogen atom of NO. This species was full
Publikováno v:
Journal of the American Chemical Society. 133:18420-18432
Escherichia coli ribonucleotide reductase is an α2β2 complex that catalyzes the conversion of nucleotides to deoxynucleotides using a diferric tyrosyl radical (Y(122)(•)) cofactor in β2 to initiate catalysis in α2. Each turnover requires revers
Publikováno v:
Journal of the American Chemical Society. 119:2795-2803
Precursors for the selective generation of C-2 glyceryl radicals were synthesized, and the chemical behavior of the corresponding radicals was investigated by ESR spectroscopy, product analysis, and kinetic measurements. It was found that cleavage of
Publikováno v:
Journal of the American Chemical Society. 129(51)
It was recently suggested that partially reduced monoamine oxidase (MAO) A contains an equilibrium mixture of an anionic flavin radical and a tyrosyl radical (Rigby, S. E.; et al. J. Biol. Chem. 2005, 280, 4627-4632). These observations formed the ba
Autor:
James M. Mayer, Jasmine R. Bryant
Publikováno v:
Journal of the American Chemical Society. 125(34)
Anaerobic oxidations of 9,10-dihydroanthracene (DHA), xanthene, and fluorene by [(bpy)(2)(py)Ru(IV)O](2+) in acetonitrile solution give mixtures of products including oxygenated and non-oxygenated compounds. The products include those formed by organ
Publikováno v:
Journal of the American Chemical Society. 114:2277-2279
The recent isolation of fullerenes such as C{sub 60} and C{sub 70} has led to several studies of the reactivity and physical properties of their excited states. The authors recently reported that triplet C{sub 60} ({sup 3}C{sub 60}) is formed with a
Autor:
Roger V. Lloyd, David E. Wood
Publikováno v:
Journal of the American Chemical Society. 97:5986-5992
The $beta$-halo-tert-butyl radicals were prepared by x-irradiation of the corresponding isobutyl halides in an adamantane matrix at 77$sup 0$K and their conformations were determined by analysis of their EPR spectra. The radicals are nonplanar at the