Nature CommunicationsPrecise control of selective nitrogen atom insertion into five-membered cyclic β-ketoestersYalin ZhangJiajia WangYiwei TaoAoqi WangGuodong ShenZhen LiMeiyu ZhangBing YuXin ZhangXianqiang Huang2025-07-19Full textDOI https://doi.org/10.1038/s41467-025-62034-z