The reductivecoupling of an aryl carbonyl group with an activated alkene to give the corresponding γ‐hydroxybutyric acid (GHBA) derivative was achieved in the presence of zinc and ammonia. A board scope of GHBA derivatives could be synthesized under ambient conditions by this method. A mechanism involving a Zn‐ketyl radical as the key intermediate is proposed.
作者:Son H. Doan、Mohanad A. Hussein、Thanh Vinh Nguyen
DOI:10.1039/d1cc02947a
日期:——
used to be one of the most powerful synthetic tools to functionalize alcohols and nitriles, providing valuable N-alkyl amide products. However, this reaction has not been frequently used in modern organicsynthesis due to its employment of strongly acidic and harsh reaction conditions, which often lead to complicated side reactions. Herein, we report the development of a new method using salts of the
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 mildconditions with good functional group tolerance