Highly Regioselective Palladium-Catalyzed C2-Amination of 2,4-Dichloropyridines: Scope and Limitations
作者:Rémy Morgentin、Christian Delvare、Patrice Koza
DOI:10.1055/s-0030-1260080
日期:2011.8
The use of palladium(0) enables a highly regioselective C-2 amination of 4,6-dichloronicotinonitrile. Coupling with aminoarenes that are N-acetyl-masked to limit cross-coupling overreaction, leads to 4-chloro-6-anilino nicotinonitrile compounds after deprotection in situ. The scope of these original conditions was evaluated.
使用零价钯催化剂实现了对4,6-二氯烟腈的高度区域选择性的C-2胺化反应。通过与N-乙酰化保护的氨基芳烃进行偶联,以限制交叉偶联过度反应,然后在原位脱保护后得到4-氯-6-苯胺烟腈化合物。这些原始反应条件的适用范围得到了评估。