Copper-Catalyzed Aerobic Oxidative Transformation of Ketone-Derived<i>N</i>-Tosyl Hydrazones: An Entry to Alkynes
作者:Xianwei Li、Xiaohang Liu、Huoji Chen、Wanqing Wu、Chaorong Qi、Huanfeng Jiang
DOI:10.1002/anie.201405058
日期:2014.12.22
A novel strategy involving Cu‐catalyzed oxidative transformation of ketone‐derived hydrazone moiety to various synthetic valuable internal alkynes and diynes has been developed. This method features inexpensive metal catalyst, green oxidant, good functional group tolerance, high regioselectivity and readily available starting materials. Oxidative deprotonation reactions were carried out to form internal
已开发出一种新的策略,涉及铜催化的酮衍生部分转化为各种合成的有价值的内部炔烃和二炔。该方法的特点是廉价的金属催化剂,绿色氧化剂,良好的官能团耐受性,高区域选择性和易于获得的原料。进行氧化去质子反应以形成内部炔烃和对称二炔。进行hydr与卤化物和末端炔的交叉偶联反应,得到官能化的炔和不对称的共轭二炔。提出了通过碳卡宾中间体进行CC三键形成的机理。