Divergent Synthesis of Chalcogenylated Quinolin-2-ones and Spiro[4,5]trienones via Intramolecular Cyclization of N-Arylpropynamides Mediated by Diselenides/Disulfides and PhICl2
作者:Yunfei Du、Xiaoxian Li、Beibei Zhang、Zhenyang Yu、Dongke Zhang、Haofeng Shi、Lingzhi Xu
DOI:10.1055/s-0041-1737291
日期:2022.3
The reaction of N-arylpropynamides with (dichloroiodo)benzene (PhICl2) and diselenides/disulfides resulted in a divergent synthesis of chalcogenylated quinolinones and spiro[4.5]trienes through intramolecular electrophilic cyclization and chalcogenylation. The chalcogenyl functional group was introduced by an electrophilic reactive organosulfenyl chloride or selenenyl chloride species, generated in
的反应Ñ与(dichloroiodo)苯(PhICl -arylpropynamides 2)和diselenides /二硫化物导致chalcogenylated喹啉酮和螺[4.5]通过分子内电环化和chalcogenylation三烯的发散合成。硫属元素基官能团通过亲电反应性有机亚硫酰氯或硒酰氯物质引入,其由二硫化物/二硒化物和PhICl 2的反应原位产生。值得注意的是,不同的环化途径由N-芳基丙酰胺底物中苯胺环上的取代基类型决定。在对位带有氟、甲氧基或三氟甲氧基的底物苯胺的 - 位置经历了另一种螺旋化途径,以产生 3-硫属化螺 [4,5] 三烯酮。