nitrite served as readily available nitrogen sources, and pyridine, pyrimidine, and pyrazole substituents were efficient directing groups (DGs; see scheme; Cp*=C5Me5). The synthetic utility of the azidation products was demonstrated in subsequent functional‐group transformations.
掌握解决方案:在存在高价
碘氧化剂的螯合辅助标题反应中,
叠氮化
钠和
亚硝酸钠是易于获得的氮源,
吡啶,
嘧啶和
吡唑取代基是有效的导向基团(DG;参见方案; Cp * = C 5 Me 5)。
叠氮化产物的综合效用在随后的功能组转化中得到了证明。