Free carboxylic acids are converted into amides in moderate to high yields in the presence of a stoichiometric amount of trimethylaluminium and amines at 90 ËC after 1 hour.
The synthesis and structure of pyridine-oxadiazole iridium complexes and catalytic applications: Non-coordinating-anion-tuned selective C N bond formation
作者:Wei Yao、Yilin Zhang、Haiyan Zhu、Chenyang Ge、Dawei Wang
DOI:10.1016/j.cclet.2019.08.049
日期:2020.3
Abstract Several novel pyridine-oxadiazole iridium complexes were synthesized and characterized through X-ray crystallography. The designed iridium complexes revealed surprisingly high catalytic activity in CN bondformation of amides and benzyl alcohols with the assistance of non-coordinating anions. In an attempt to achieve borrowing hydrogen reactions of amides with benzyl alcohols, N,N'-(phenylmethylene)dibenzamide
Reductive N-alkylation of primary amides using nickel-nanoparticles
作者:Kathiravan Murugesan、Asma M. Alenad、Ahmad S. Alshammari、Manzar Sohail、Rajenahally V. Jagadeesh
DOI:10.1016/j.tet.2021.132526
日期:2021.12
as reusable catalysts for reductive N-alkylation of amides. These Ni-nanoparticles based catalysts have been prepared by the template synthesis of tartaric acid and 2-methyl imidazole ligated Ni-complex on SiO2 and subsequent pyrolysis under argon. Applying optimal Ni-nanostructured catalyst, N-alkylation of aromatic and heterocyclic primary amides with different aldehydes in presence of molecular hydrogen
在这里,我们报告了镍纳米颗粒作为酰胺还原 N-烷基化的可重复使用的催化剂。这些基于 Ni 纳米颗粒的催化剂是通过在 SiO 2上以酒石酸和 2-甲基咪唑连接的 Ni 络合物为模板合成的,然后在氩气下热解制备。应用最佳的 Ni 纳米结构催化剂,在分子氢的存在下,用不同的醛对芳香族和杂环伯酰胺进行 N-烷基化,以良好到优异的产率获得结构多样的 N-烷基化酰胺。此外,该 N-烷基化方案的适用性已被证明可用于左乙拉西坦药物中伯酰胺基团的选择性功能化。
Solvent-Free, Base-Free Microwave-Mediated Iridium-Catalyzed N-Alkylation of Amides with Alcohols
作者:Mark Trudell、Tushar Apsunde
DOI:10.1055/s-0033-1340142
日期:——
microwave-mediated (Cp*IrCl2)2-catalyzed conditions for the N-alkylation of amides with alcohols have been developed. A series of primary and secondary alcohols have been shown to produce high yields of N-alkyl arylamides and N-alkyl alkylamides. Solvent-free, base-free microwave-mediated (Cp*IrCl2)2-catalyzed conditions for the N-alkylation of amides with alcohols have been developed. A series of primary
FACILE CONVERSION OF ALCOHOLS INTO N-SUBSTITUTED AMIDES BY MAGNESIUM HYDROGENSULFATE UNDER HETEROGENEOUS CONDITIONS
作者:P. Salehi、M. M. Khodaei、M. A. Zolfigol、A. Keyvan
DOI:10.1081/scc-100104410
日期:2001.1
Different classes of alcohols react efficiently with nitriles in the presence of magnesium hydrogensulfate, Mg(HSO4)(2), to produce amides in high yields.