Cu-Catalyzed Redox-Neutral Ring Cleavage of Cycloketone <i>O</i>-Acyl Oximes: Chemodivergent Access to Distal Oxygenated Nitriles
作者:Wenying Ai、Yaqian Liu、Qian Wang、Zhonglin Lu、Qiang Liu
DOI:10.1021/acs.orglett.7b03707
日期:2018.1.19
chemodivergent copper-catalyzed ring opening of cycloketone oximes via radical-mediated C–C bond cleavage under redox-neutral conditions is described. This method allows the divergent synthesis of γ- and δ-acyloxylated, alkoxylated, and hydroxylated nitriles while avoiding the use of toxic cyanide reagents. Moreover, these reactions proceed under very mild conditions with good functional group tolerance
描述了在氧化还原中性条件下,通过自由基介导的CC键裂解,化学扩散铜催化的环酮肟的开环。该方法允许γ-和δ-酰氧基化,烷氧基化和羟基化的腈的发散合成,同时避免使用有毒的氰化物试剂。此外,这些反应在非常温和的条件下进行,具有良好的官能团耐受性。值得注意的是,较少应变的底物环戊酮肟的开环反应在确定的条件下也进行得很好。