<scp>
PhICl
<sub>2</sub>
</scp>
/
<scp>
NH
<sub>4</sub>
SCN‐Mediated
</scp>
Oxidative Regioselective Thiocyanation of Pyridin‐2(
<scp>
1
<i>H</i>
</scp>
)‐ones
作者:Shanqing Tao、Jiaxi Xiao、Yadong Li、Fengxia Sun、Yunfei Du
DOI:10.1002/cjoc.202100278
日期:2021.9
The reaction of pyridin-2(1H)-ones with PhICl2 and NH4SCN enables an efficient regioselective thiocyanation, leading to the synthesis of the biologically interesting C5 thiocyanated 2-pyridones in good to high yields. The mechanistic pathway of this metal-free approach is postulated to involve the formation of the reactive thiocyanogen chloride from the reaction of PhICl2 and NH4SCN followed with the
吡啶-2(1 H )-酮与PhICl 2和NH 4 SCN 的反应可实现有效的区域选择性硫氰化,从而以良好或高产率合成具有生物学意义的C5 硫氰化2-吡啶酮。这种无金属方法的机械途径被假定为涉及从 PhICl 2和 NH 4 SCN的反应形成反应性氯化硫氰,然后是吡啶-2(1 H )-一个环的区域选择性亲电硫氰化。