Chemo- and Regioselective Direct Hydroxylation of Arenes with Hydrogen Peroxide Catalyzed by a Divanadium-Substituted Phosphotungstate
作者:Keigo Kamata、Taiyo Yamaura、Noritaka Mizuno
DOI:10.1002/anie.201201605
日期:2012.7.16
Peroxide in, phenol out: The catalyst [γ‐PW10O38V2(μ‐OH)2]3− showed high activity in the hydroxylation of various aromatic compounds with aqueous H2O2. The system was regioselective, producing para‐phenols from monosubstituted benzene derivatives. Furthermore, alkylarenes with reactive side‐chain CH bonds could be chemoselectively hydroxylated without significant formation of side‐chain oxygenated
过氧化物,酚出:将催化剂[γ-PW 10 ö 38 V 2(μ-OH)2 ] 3-表明在各种芳族化合物与水性小时羟化活性高2 Ò 2。该系统具有区域选择性,可从单取代的苯衍生物生产对酚。此外,反应性侧链的C烷基芳烃 H键可以化学选择性羟基化而不显著形成的侧链氧化产物。