化学
催化作用
激进的
位阻效应
键裂
分解
酒精氧化
氧化磷酸化
有机化学
小学(天文学)
光化学
天文
生物化学
物理
作者
Mingyang Li,Zhanrong Zhang,Jinliang Song,Shuaishuai Liu,Huizhen Liu
标识
DOI:10.1002/anie.201908788
摘要
Abstract Stable organic nitroxyl radicals are an important class of catalysts for oxidation reactions, but their wide applications are hindered by their steric hinderance, high cost, complex operation, and separation procedures. Herein, NO 2 in DMSO is shown to effectively catalyze the aerobic oxidative cleavage of C(OH)−C bonds to form a carboxylic group, and NO 2 was generated in situ by decomposition of nitrates. A diverse range of secondary alcohols were selectively converted into acids in excellent yields in this transition‐metal‐free system without any additives. Preliminary results also indicate its applicability to depolymerize recalcitrant macromolecular lignin. Detail studies revealed that NO 2 from nitrates promoted the reaction, and NO 2 served as hydrogen acceptor and radical initiator for the tandem oxidative reaction.
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