A novel copper-catalyzedC(sp3)-H oxidative functionalization of aromatic oxime acetates with [small alpha]-oxocarboxylic acids was reported. This process involved N-O/C-C bondcleavages and C-C bond formations to furnish substituted enaminones under...
An environmentally benign and efficient electrochemical synthesis of enaminones via a decarboxylativecoupling reaction of α-keto acids using n-Bu4NI as a redox catalyst and electrolyte under constant current electrolysis in an undivided cell is reported. A broad vinyl azide substrate scope and high functional group tolerance are observed. A gram-scale reaction further demonstrates the practicability
Metal-Free Method for Direct Synthesis of Functionalized β-Ketoenamines
作者:Xiaobao Zeng、Chulong Liu、Weiguang Yang、Yunxiang Weng、Xinyan Wang、Yuefei Hu
DOI:10.1021/acs.joc.8b03247
日期:2019.3.15
A new method for direct synthesis of β-ketoenamines was developed by a BF3·OEt2-catalyzed cyclization of 1-iodoalkyne and α-keto acid followed by an amine-mediated ring-opening in one pot. Its metal-free conditions allowed the easy synthesis of those products bearing the transition metal-sensitive functional groups. Its three-component process achieved wide range of functionalized products.
has been developed, which provides an efficient way to synthesize N-aryl enaminones with a broad substrate scope and excellent functional group compatibility. The N-aryl enaminones could be converted into a series of highly valuable buildingblocks and bioactive compounds. Notably, in comparison with traditional methods, this alternative approach provides accesses to N-aryl enaminones bearing multiple
Catalytic Olefin–Imine Metathesis: Cobalt-Enabled Amidine Olefination with Enaminones
作者:Shuaixin Fan、Weiping Wu、Lili Fang、Jin Zhu
DOI:10.1021/acs.orglett.3c01249
日期:2023.5.12
Organic metathesis reactions allow for expedient assembly of diverse molecular skeletons and appendages through the exchange of molecular fragments. The olefin–imine variant of this process, in particular, can expand the synthetic toolbox for manipulating carbon–carbon and carbon–nitrogen bonds but has thus far been achieved only on a stoichiometric metal-mediated basis. Herein, we report the development