A direct and regiocontrolled thiolation method to access β-amino sulfides through the palladium-catalyzed C(sp2)–H functionalization of stable enamines was described. The reaction was realized under mild conditions by adding an external phosphine ligand to prevent poisoning of the palladium catalyst by the sulfuric reagents. A possible mechanism was proposed according to the obtained results. The DFT
描述了一种通过钯催化的稳定烯胺的 C(sp2)-H 官能化获得 β-氨基硫化物的直接和区域控制的硫醇化方法。该反应在温和条件下通过添加外部膦配体来实现,以防止钯催化剂被硫酸试剂中毒。根据所得结果提出了一种可能的机制。DFT 计算结果与实验数据一致,给出了 β-氨基硫化物的 E 异构体。该反应也以克规模进行,并显示出在有机合成中的潜在应用。