Copper catalyzed cross-coupling reactions of carboxylic acids: an expedient route to amides, 5-substituted γ-lactams and α-acyloxy esters
作者:S. Priyadarshini、P. J. Amal Joseph、M. Lakshmi Kantam
DOI:10.1039/c3ra41000e
日期:——
A convenient and recyclable catalytic protocol for the synthesis of N,N-dimethyl substituted amides, 5-substituted γ-lactams and α-acyloxy ethers from carboxylic acids using CuO nanoparticles and TBHP is described.
Amidation Reaction of Carboxylic Acid with Formamide Derivative Using SO<sub>3</sub>·pyridine
作者:Shota Kawano、Kodai Saito、Tohru Yamada
DOI:10.1246/cl.171216
日期:2018.4.5
The amidation reaction of carboxylicacid derivatives was developed using sulfur trioxide pyridinecomplex (SO3·py) as a commercially available and easily handled oxidant. This method could be applied to the reaction of various aromatic and aliphatic carboxylicacids, including optically active ones, with formamide derivatives to afford the corresponding amides in good to high yields.
Copper-catalyzed synthesis of α,β-unsaturated acylamides via direct amidation from cinnamic acids and N-substituted formamides
作者:Hong Yan、Hailong Yang、Linhua Lu、Defu Liu、Guangwei Rong、Jincheng Mao
DOI:10.1016/j.tet.2013.06.078
日期:2013.9
A highly effective synthesis of α,β-unsaturated acylamides is reported for the first time via copper-catalyzed direct amidation between readily available cinnamic acids and N-substituted formamides. The protocol was easily accessible and practical.
A facile and convenient protocol for the synthesis of cinnamides from cinnamic acids and tetraalkylthiuram disulfides under metal and additive free conditions has been achieved. This method allows the efficient coupling of diverse cinnamic acids with tetraalkylthiuram disulfides through a simply mixing operation.