Synthesis of 3‐Halogenated Quinolin‐2‐Ones from
<i>N</i>
‐Arylpropynamides
<i>via</i>
Hypervalent Iodine(III)−Mediated Umpolung Process
作者:Xiaoxian Li、Beibei Zhang、Bingyue Zhao、Xiaofan Wang、Lingzhi Xu、Yunfei Du
DOI:10.1002/adsc.202200131
日期:2022.4.12
The selective synthesis of 3-halogenated quinolin-2-ones from N-arylpropynamides was realized via umpolung process mediated by phenyliodine(III) diacetate (PIDA) and MX (LiCl, LiBr, CuI). Differing from most previous electrophilic cyclization/halogenation processes that afforded spiro[4,5]trienones, 3-halogenated quinolin-2-ones were obtained through this method with high selectivity.