Regioselective Chlorination of Quinoline<i>N</i>-Oxides and Isoquinoline<i>N</i>-Oxides Using PPh<sub>3</sub>/Cl<sub>3</sub>CCN
作者:Kai Qiao、Li Wan、Xiaoning Sun、Kai Zhang、Ning Zhu、Xin Li、Kai Guo
DOI:10.1002/ejoc.201501567
日期:2016.3
A novel method for the regioselective C2-chlorination of heterocyclic N-oxides has been developed. PPh3/Cl3CCN were used as chlorinating reagents and the desired N-heterocyclic chlorides were obtained smoothly in satisfactory yields. The reactions proceeded in a highly efficient and selective manner across a broad range of substrates demonstrating excellent functional group tolerance. In addition,
已经开发了一种用于杂环 N-氧化物的区域选择性 C2-氯化的新方法。以PPh3/Cl3CCN为氯化试剂,以令人满意的收率顺利地获得了所需的N-杂环氯化物。反应以高效和选择性的方式在广泛的底物上进行,表现出优异的官能团耐受性。此外,该氯化反应可用于修饰有吸引力的配体和药物的 N-杂环支架。