Copper-catalyzed oxidative aromatization of 2-cyclohexen-1-ones to phenols in the presence of catalytic hydrogen bromide under molecular oxygen
作者:Kotaro Kikushima、Yuta Nishina
DOI:10.1039/c3ra43071e
日期:——
Catalytic oxidative aromatization has been achieved using 2-cyclohexen-1-ones to obtain phenol derivatives in the presence of a catalytic amount of copper salt and aqueous HBr under molecular oxygen. The amount of HBr was successfully reduced to a catalytic quantity, and the other additive such as a ligand and an oxidant as well as inert conditions were unnecessary. Various mono-, di-, and trisubstituted
在分子氧下,在催化量的铜盐和HBr水溶液存在下,使用2-环己烯-1-酮实现了催化氧化芳构化,从而获得了苯酚衍生物。HBr的量已成功减少到催化量,并且不需要其他添加剂(例如配体和氧化剂)以及惰性条件。可以在廉价和简单的条件下合成在所需位置具有取代基的各种单,二和三取代的苯酚。还证明了氧化芳构化/溴化顺序可得到具有过量HBr的溴酚。