Efficient Aerobic Oxidation of Secondary Alcohols at Ambient Temperature with an ABNO/NO<sub><i>x</i></sub> Catalyst System
作者:Markus B. Lauber、Shannon S. Stahl
DOI:10.1021/cs400746m
日期:2013.11.1
presented for aerobic oxidation of secondary alcohols with a nitroxyl radical in combination with HNO3, NaNO2, or both as cocatalysts. Diverse nitroxyls are compared, including several novel bicyclic derivatives. Catalyst systems with the readily available nitroxyls, 9-azabicyclo[3.3.1]nonane-N-oxyl (ABNO) and 9-azabicyclo[3.3.1]nonan-3-one-N-oxyl (keto-ABNO), are optimized in acetic acid or acetonitrile
提出了一种新的高度实用的方法,该方法可与硝基氧和HNO 3,NaNO 2或两者一起作为助催化剂,对带有仲氧基的仲醇进行好氧氧化。比较了不同的硝酰基,包括几种新颖的双环衍生物。优化了具有现成的硝酰基,9-氮杂双环[3.3.1]壬烷-N-氧基(ABNO)和9-氮杂双环[3.3.1]壬南-3-一-N-氧基(酮-ABNO)的催化剂体系在乙酸或乙腈中作溶剂。该反应与带有各种官能团的底物相容,并在温和条件下于环境压力和温度下有效地进行。