A Cu(OAc)2-mediated C-Hamidation and amination of arenes and heteroarenes has been developed using a readily removable directing group. A wide range of sulfonamides, amides, and anilines function as amine donors in this reaction. Heterocycles present in both reactants are tolerated, making this a broadly applicable method for the synthesis of a family of inhibitors including 2-benzamidobenzoic acids
Quinazolinones have broad applications in the biological, pharmaceutical and material fields. Studies on the synthesis of these compounds are therefore widely conducted. Herein, a novel and highly efficient copper-mediated tandem C(sp2)–H amination and annulation of benzamides and amidines for the synthesis of quinazolin-4(1H)-ones is proposed. This synthetic route can be useful for the construction of quinazolin-4(1H)-one
aliphatic olefins are often found to be unreactive in conventional alkenylation reactions. To address this problem, a cobalt catalyzed allylic selective dehydrogenative Heck reaction with internal aliphatic olefins has been developed. The method is highly regio- and stereoselective, the conditions are mild and a wide variety of functional groups can be tolerated. Remarkably, both internal and terminal aliphatic
A one-pot protocol has been developed for the synthesis of quinazolinones from amide-oxazolines with TsCl via a cyclic 1,3-azaoxonium intermediate and 6π electron cyclization in the presence of a Lewis acid and base. The process is operationally simple and has a broad substrate scope. This method provides a unique strategy for the construction of quinazolinones.
Palladium-catalyzed aminocarbonylation of aryl iodides with amines: efficient access to bidentate amide directing groups
作者:Yanqing Wang、Tao Wang、Xiaosha Wang、Lantao Liu、Guoliang Mao
DOI:10.1007/s11243-020-00418-4
日期:2021.1
A new route to bidentate amide directing groups has been developed via the palladium(II)-catalyzed aminocarbonylation. Under atmospheric carbon monoxide pressure, using commercially available aryliodides and aromatic amine derivatives as substrates, the three-component reaction proceeded smoothly to give the desired products in moderate-to-excellent yields with good functional-group compatibility
已经通过钯 (II) 催化的氨基羰基化开发了一种双齿酰胺导向基团的新途径。在常压一氧化碳压力下,以市售的芳基碘化物和芳香胺衍生物为底物,三组分反应顺利进行,以中等至优异的收率得到目标产物,并具有良好的官能团相容性。