Palladium and Copper Cocatalyzed Intermolecular Cyclization Reaction: Synthesis of 5-Aminopyrazole Derivatives
作者:Chaowei Ma、Ping Wen、Jihui Li、Xu Han、Zhaoyang Wu、Guosheng Huang
DOI:10.1002/adsc.201500767
日期:2016.3.31
A novel and efficient palladium and copper co‐catalyzed intermolecular cyclization of acetonitriles with hydrazones has been developed for the synthesis of 5‐aminopyrazoles through CC and CN bond formation. The reaction has the advantages of easily available starting materials, simple manipulation and mild reaction conditions. The reaction involving various substituted acetonitriles and hydrazones
已开发出一种新颖且有效的钯和铜与共催化的乙腈分子间环化反应,用于通过C CC和CN键的形成合成5-氨基吡唑。该反应具有容易获得的起始原料,简单的操作和温和的反应条件的优点。涉及各种取代乙腈和的反应进行得很顺利,并且以高收率合成了5-氨基吡唑。与脂族和杂芳族底物相反,芳族底物倾向于具有更高的反应性。