2-Pyridylmethyl ether: a readily removable and efficient directing group for amino acidligand accelerated ortho-C–H olefination of phenols
作者:Xuefeng Cong、Jingsong You、Ge Gao、Jingbo Lan
DOI:10.1039/c2cc37291f
日期:——
2-Pyridylmethyl ether-directed ortho-C-H olefination of phenols via a seven-membered cyclopalladated intermediate has been disclosed to construct a variety of ortho-alkenyl phenols and ortho-alkyl phenols.
Multicatalytic dearomatization of phenols into epoxyquinols <i>via</i> a photooxygenation process
作者:Louis Péault、Pierrick Nun、Erwan Le Grognec、Vincent Coeffard
DOI:10.1039/c9cc03068a
日期:——
A multicatalytic photooxygenation of substituted phenols in the presence of rose bengal and cesium carbonate under green LED light is reported. This transformation enabled the introduction of both atoms of singlet oxygen and led to the one-pot synthesis of epoxyquinols in a stereoselective way.