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  • 1
    Electronic Resource
    Electronic Resource
    Thianthrene 5-Oxide (SSO) as a Mechanistic Probe of the Electrophilic Character in the Oxygen Transfer by Dioxiranes (1994)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 127 (1994), S. 1111-1113 
    Details
    ISSN: 0009-2940
    Keywords: Thianthrene 5-oxide ; Dioxiranes ; Hydrogen peroxide ; Oxidation ; Oxygen transfer ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Thianthrene 5-oxide (SSO) is established as a useful and convenient chemical probe to assess the electronic character (Xso) of oxygen transfer agents. Thus, H2O2 under basic conditions (HOOH/nBu4NOH) gives an Xso value of 1.00, while H2O2 under acidic conditions (HOOH/HClO4) affords an Xso value near zero. On this Xso scale, dimethyldioxirane (Xso = 0.13 at 0°C) and methyl(trifluoromethyl)dioxirane (Xso = 0.10 at 0°C) are, as expected, definitely strong electrophilic oxidants.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19941270621
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  • 2
    Electronic Resource
    Electronic Resource
    Activation of Bis(trimethylsilyl) Peroxide and tert-Butyl Hydroperoxide with Oxo and Peroxo Complexes of Vanadium, Molybdenum, and Tungsten for the Sulfoxidation of Thianthrene 5-Oxide (1996)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 129 (1996), S. 1177-1182 
    Details
    ISSN: 0009-2940
    Keywords: Thianthrene 5-oxide ; Peroxide, bis(trimethylsilyl) ; Hydroperoxide, tert-butyl ; Oxygen transfer ; Peroxo complexes ; Catalysis ; Vanadium ; Molybdenum ; Tungsten ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Bis(trimethylsilyl) peroxide (BTSP) and tert-butyl hydroperoxide (tBuOOH) were activated by various oxo and peroxo complexes of molybdenum, tungsten, and vanadium as catalysts for the sulfoxidation of thianthrene 5-oxide (SSO). A screening of a number of phosphane oxide and amine oxide ligands revealed that BTSP was most efficiently activated by the [MoO5(OPtBu3)] complex. The best results for tBuOOH as oxygen source were achieved with the vanadates [VO(OR)3] (R = tBu, iPr). Comparative selectivity and rate data for the stoichiometric and catalytic sulfoxidations of SSO mediated by the MoO5L complex (L = OPtBu3, OPnOct3, ONnBu3, ONnOct3) suggest that the bisperoxo metal complex is the active oxygen transfer species.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19961291006
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    Paper (German National Licenses)
    Fulltext
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