Iron-Catalyzed Oxidative Amidation of Tertiary Amines with Aldehydes
作者:Yuanming Li、Fan Jia、Zhiping Li
DOI:10.1002/chem.201203824
日期:2013.1.2
A new oxidative coupling protocol for amide bond formation has been developed (see scheme). The method provides an efficient and practical route for the synthesis of tertiary amides from readily available tertiary amines and aldehydes in the presence of a simple FeCl2 catalyst. Mechanistic studies indicated that a peroxide and an iminium ion act as the reactive intermediates in this oxidative amidation
Catalyst-free amidation of aldehyde with amine under mild conditions
作者:Hongyin Yang、Wenjian Hu、Shengjue Deng、Tiantian Wu、Haiman Cen、Yiping Chen、Dela Zhang、Bo Wang
DOI:10.1039/c5nj01372k
日期:——
A highly efficient, catalyst-free and one-pot procedure for the direct synthesis of amides from aldehydes and amines under mild conditions has been developed.
一种高效、无催化剂且一锅法的程序已经开发出来,可在温和条件下直接合成酰胺,使用的原料是醛和胺。
A Facile One-Pot Transformation of Carboxylic Acids to Amides
作者:Jong Chan Lee、Yoon Hwan Cho、Hyeok Koo Lee、Sung Hye Cho
DOI:10.1080/00397919508011836
日期:1995.9
Abstract Carboxylic acids, converted in situ into carboxylic-(p-nitrobenzene)sulfonic anhydrides using p-nitrobenzenesulfonyl chloride, Et3N, and DMAP in CH3CN, react with primary or secondary amines, to give amides in high yields.
Spectrophotometric Analysis of Ternary Uranyl Systems to Replace Tri-N-butyl Phosphate (TBP) in Used Fuel Reprocessing
作者:Adam J. Canner、Laurence M. Harwood、Joseph Cowell、Jasraj S. Babra、Solomon F. Brown、Mark D. Ogden
DOI:10.1007/s10953-019-00942-7
日期:2020.1
monoamides were found to be independent of amine-side chain length, but were slightly dependent on the carbonyl-side chain length. TEDGA was found to produce multiple uranyl complexes in solution. Job plot data indicated that the uranyl cation strongly prefers to bond either only with the monoamide or diamide in ternary monoamide–diamide–UO2 systems. Monoamide–diglycolamide–UO2 systems were more complicated
Using dialkyl amide <i>via</i> forming hydrophobic deep eutectic solvents to separate citric acid from fermentation broth
作者:Lijuan Liu、Qifeng Wei、Yong Zhou、Xiulian Ren
DOI:10.1039/c9gc04401a
日期:——
traditional calcium salt method which produces a large amount of waste gypsum residue, a new way of separating citric acid from fermentation broth was developed by forming hydrophobic deep eutectic solvents (DESs), in which amide and citric acid were used as the hydrogen bond acceptor and donor respectively when amide was in contact with the fermentation broth containing citric acid. Among these amides
如今,开发适当的技术是社会减少环境影响的最大挑战之一。在这项研究中,为避免传统的钙盐方法产生大量的石膏废渣,通过形成疏水性深共熔溶剂(DESs)(其中酰胺和柠檬酸为二氯乙烷),开发了一种从发酵液中分离柠檬酸的新方法。当酰胺与含柠檬酸的发酵液接触时,分别用作氢键受体和供体。在这些酰胺中,C 10 H 21根据分子大小和形状,发现NO是与柠檬酸形成疏水性DES的有效氢键受体,其最大疏水平衡常数为3.14。通过使用FT-IR和量子化学(QC)计算分析化学键,研究了疏水性DES的形成机理。通过升高疏水性DES的温度来再生C 10 H 21 NO。再生的C 10 H 21 NO表现出良好的再循环特性,而形成疏水性DES的能力没有明显降低。这种获得高质量柠檬酸的有效方法为分离其他羧酸提供了新思路。