Nickel-Catalyzed Denitrogenative Cyclization of 1,2,3,4-Benzothiatriazin-1,1(2<i>H</i>)-dioxides with Arynes To Synthesize Biaryl Sultams
作者:Vijaykumar H. Thorat、Yu-Lin Tsai、Yong-Ran Huang、Chien-Hong Cheng、Jen-Chieh Hsieh
DOI:10.1021/acs.orglett.2c00920
日期:2022.4.22
Herein, we report the nickel-catalyzed denitrogenative cyclization reaction of 1,2,3,4-benzothiatriazine-1,1-dioxides with arynes to generate the polysubstituted biaryl sultams with tolerance of a wide diversity of substituents on every subunit. The mechanistic study indicates that the reaction is initiated by the formation of a diradical species, which reacts with a nickel complex to form a nickelacycle
在此,我们报道了镍催化的 1,2,3,4-苯并噻三嗪-1,1-二氧化物与芳烃的脱氮环化反应生成多取代联芳基磺胺类化合物,每个亚基上都具有多种取代基的耐受性。机理研究表明,该反应由双自由基物质的形成引发,该物质与镍络合物反应形成镍环中间体,并通过插入芳烃进行随后的环化。