Peroxide in, phenol out: The catalyst [γ-PW(10)O(38)V(2)(μ-OH)(2)](3-) showed high activity in the hydroxylation of various aromatic compounds with aqueous H(2)O(2). The system was regioselective, producing para-phenols from monosubstituted benzene derivatives. Furthermore, alkylarenes with reactive side-chain C sp 3-H bonds could be chemoselectively hydroxylated without significant formation of side-chain oxygenated products.
Peroxid hinein, Phenol heraus: [γ‐PW10O38V2(μ‐OH)2]3− katalysiert die Hydroxylierung einer Vielzahl aromatischer Verbindungen mit wässrigem H2O2 mit hoher Aktivität. Das System ist regioselektiv: Monosubstituierte Benzolderivate ergeben para‐Phenole, während Alkylarene mit reaktiven C sp 3‐H‐Bindungen in der Seitenkette chemoselektiv, ohne nennenswerte Bildung von seitenkettenoxygenierten Produkten hydroxyliert werden.
The treatment of the divanadium phosphotungstate with HClO4 generates in situ the [γ‐PW10O38V2(μ‐OH)2] 3‐ species which shows high catalytic activity in the hydroxylation of various aromatic compounds with aqueous H2O2.
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