convenient and straightforward acid-promoted synthesis of a new series of polyfunctionalized pyrroles has been developed based on a one-pot three-componentreaction of acetoacetanilide, benzoin, and ammonium acetate/diverse anilines in acetic acid as a green solvent at 100 °C. The other salient benefits of this transformation include being simple reaction conditions, toxic transition-metal-free, no
Catalyst‐free facile and efficient one‐pot synthesis of densely functionalized pyrroles and α‐amino ketones
作者:Sivarama Krishna Reddy Vanga、Hari Babu Bollikolla、V. V. Satyanarayana Peruri
DOI:10.1002/jhet.4227
日期:2021.3
An efficient catalyst‐free one‐pot three‐component synthesis of penta‐substituted pyrroles has been successfully developed. A variety of penta‐substituted pyrroles were straightforwardly synthesized from good to excellent yields (78%–93%) by using easily accessible starting materials under mild conditions. This protocol also provided α‐amino ketones in good yields (87%–98%) without column chromatography
Palladium-catalyzed oxidative cross-coupling for the synthesis of α-amino ketones
作者:Xiao-Hong Wei、Zhen-Hua Li、Lian-Biao Zhao、Ping Zhang、Han-Cheng Zhou、Yan-Bin Wang
DOI:10.1039/c9ra06108h
日期:——
A novel oxidative cross-couplingreaction for the synthesis of α-aryl α-amino ketones in the presence of palladiumcatalysts using T+BF4− as an oxidant has been developed. This transformation was achieved by direct C–H oxidation of α-aminocarbonyl compounds and arylation. The mild reaction has a broad reaction scope and gives desired α-aryl α-amino ketones in moderate to excellent yields.