Cu(OAc)<sub>2</sub>-catalyzed remote benzylic C(sp<sup>3</sup>)–H oxyfunctionalization for CO formation directed by the hindered para-hydroxyl group with ambient air as the terminal oxidant under ligand- and additive-free conditions
作者:Jian-An Jiang、Cheng Chen、Jian-Gang Huang、Hong-Wei Liu、Song Cao、Ya-Fei Ji
DOI:10.1039/c3gc41946k
日期:——
A hindered para-hydroxyl group-directed remote benzylic C(sp3)–H oxyfunctionalization has been developed for the straightforward transformation of 2,6-disubstituted 4-cresols, 4-alkylphenols, 4-hydroxybenzyl alcohols and 4-hydroxybenzyl alkyl ethers into various aromatic carbonyl compounds. The ligand- and additive-free Cu(OAc)2-catalyzed atmospheric oxidation mediated by ethylene glycol unlocks a
已经开发了一种受阻的对羟基定向的远程苄基C(sp 3)–H氧官能团,用于将2,6-二取代的4-甲酚,4-烷基苯酚,4-羟基苄醇和4-羟基苄基烷基醚直接转化为各种芳族羰基化合物。由乙二醇介导的无配体和无添加剂的Cu(OAc)2催化的大气氧化作用,可以使伯苄基和仲苄基官能化,形成简便,原子经济且对环境无害的C O形成。由于4-羟基苯甲醛和4-羟基苯酮的药物重要性,因此该方法对于基础研究和实际应用均具有重要价值。