<i>N</i>-Acyl DBN Tetraphenylborate Salts as <i>N</i>-Acylating Agents
作者:James E. Taylor、Matthew D. Jones、Jonathan M. J. Williams、Steven D. Bull
DOI:10.1021/jo202647f
日期:2012.3.16
synthesized from 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and the corresponding acyl chloride in the presence of sodium tetraphenylborate. The salts have been shown to be effective N-acylating agents, reacting with primary amines, secondary amines, and sulfonamides to form the corresponding N-acylated products in good yields. The DBN hydrotetraphenylborate byproduct can be conveniently removed by filtration
A compound having the general structure of Formula (I):
or a pharmaceutically acceptable salt, solvate, or ester thereof, are useful in treating diseases, disorders, or conditions such as metabolic syndrome (e.g., obesity, waist circumference, lipid profile, and insulin sensitivity), neuroinflammatory disorders, cognitive disorders, psychosis, addictive behavior, gastrointestinal disorders, and cardiovascular conditions.
Citric acid stabilized on the surface of magnetic nanoparticles as an efficient and recyclable catalyst for transamidation of carboxamides, phthalimide, urea and thiourea with amines under neat conditions
and environmentally benign heterogeneous catalyst for the transamidation of carboxamides, phthalimide, urea and thiourea with amines. Several derivatives of formylated and transamidated products were synthesized in good to excellent yields in the presence of this catalytic system. And, the catalyst could be easily separated from the reaction mixture using an external magnet and can be reused six times
摘要成功制备并表征了柠檬酸包覆的磁性纳米粒子(Fe 3 O 4 -CA NPs)。该磁性纳米催化剂被用作一种高效,可回收且对环境无害的非均相催化剂,用于羧酰胺,邻苯二甲酰亚胺,尿素和硫脲与胺的氨基转移。在该催化体系的存在下,合成了甲酰化和酰胺化产物的几种衍生物,收率良好至优异。并且,可以使用外部磁体将催化剂容易地从反应混合物中分离出来,并且可以重复使用六次而不会显着降低其催化活性。 图形概要
Synthesis of acetamides via oxidative C–C bond cleavage of ketones catalyzed by Cu‐immobilized magnetic nanoparticles
Copper supported on magnetite nanoparticles modified with environmentally friendly ligand tricine was devised for synthesis of acetamides via C–Coxidativecleavage of ketones with amines. The catalyst was characterized using different techniques, including Fourier transform infrared, X‐ray diffraction, scannin electron microscopy, vibrating sample magnetometry, thermogravimetric analysis, and energy
(Fe3O4@GAA‐Cu(II)) as a green, superparamagnetic and recoverable nanocatalyst is found to promote quantitative N‐acylation of various amines in a very short time with an equimolar amount of thioacetic acid in water at room temperature. This method is found to be highly selective for amines and not sensitive to other functional groups. Mild reaction condition, high selectivity, efficiency, simple workup
发现铜接枝的胍乙酸修饰的磁铁矿纳米颗粒(Fe 3 O 4 @ GAA-Cu(II))作为绿色,超顺磁性和可回收的纳米催化剂,可在很短的时间内以等摩尔促进各种胺的定量N-酰化。室温下在水中加入适量的硫代乙酸。发现该方法对胺具有高度选择性,并且对其他官能团不敏感。温和的反应条件,高的选择性,效率,简单的后处理和优异的收率是该方法的一些主要优点。