amine-tethered alkyne 1, a copper-catalyzed three-component tandem amination/cyanation/alkylation sequence gives alpha-CN pyrrolidine 6 in good yield and regioselectivity. Also, a silver mediated tandem amination/oxidation of a secondary amine-tethered alkyne 7 produces functionalized pyrrole 8 in good yield. All reactions were conducted in one pot without any protection/deprotection steps.
从
伯胺系链的
炔烃1开始,
铜催化的三组分串
联胺化/
氰化/烷基化序列以良好的产率和区域选择性得到α-CN
吡咯烷6。同样,仲胺系链的
炔烃7的
银介导的串
联胺化/氧化以良好的产率产生官能化的
吡咯8。所有反应均在一个锅中进行,没有任何保护/脱保护步骤。