4,5-Dimethyl-2-Iodoxybenzenesulfonic Acid Catalyzed Site-Selective Oxidation of 2-Substituted Phenols to 1,2-Quinols
作者:Muhammet Uyanik、Tatsuya Mutsuga、Kazuaki Ishihara
DOI:10.1002/anie.201612463
日期:2017.3.27
dearomatization of 2‐substituted phenols to either 1,2‐benzoquinols or their cyclodimers, catalyzed by 4,5‐dimethyl‐2‐iodoxybenzenesulfonic acid with Oxone, has been developed. Natural products such as biscarvacrol and lacinilene C methyl ether could be synthesized efficiently under mild reaction conditions. Furthermore, both the reaction rate and site selectivity could be further improved by the introduction of
已开发了由4,5-二甲基-2-碘氧基苯磺酸与Oxone催化的2-取代酚选择性地羟基化脱芳香化为1,2-苯并喹啉或其环二聚体。在温和的反应条件下,可以有效地合成天然产物,例如联萘香酚和乳香油基C甲醚。此外,通过在苯酚的2位引入三烷基甲硅烷基甲基取代基,可以进一步提高反应速度和位点选择性。通过[4 + 2]环加成级联反应可以将相应的1,2-喹诺酚转化为各种有用的结构基序。