Efficienttransamidation of unactivated carboxamides, phthalimides, formamides and thioamides with amines undersolvent-freeconditions using H-β-zeolite as a green and recyclable heterogeneous catalyst is described. Easy work up, high purity of the products, recyclability and environmentally-friendly nature of the catalyst are the attractive features of the present methodology. This is the first report
Solvent-Free N-Alkylation of Amides with Alcohols Catalyzed by Nickel on Silica-Alumina
作者:Aubin Charvieux、Louis Le Moigne、Lorenzo G. Borrego、Nicolas Duguet、Estelle Métay
DOI:10.1002/ejoc.201901291
日期:2019.10.31
To date, the N‐alkylation of amides with alcohols has not been studied with non‐noble metal base heterogeneous catalyst. Herein, a range of amide was efficiently N‐alkylated with various alcohols using cheap and easy to handle Ni/SiO2‐Al2O3.
迄今为止,尚未使用非贵金属碱多相催化剂研究酰胺与醇的N-烷基化。在此,使用廉价且易于处理的Ni / SiO 2 -Al 2 O 3将各种酰胺有效地与各种醇进行N-烷基化。
Direct Synthesis of Amides from Carboxylic Acids and Amines Using B(OCH<sub>2</sub>CF<sub>3</sub>)<sub>3</sub>
作者:Rachel M. Lanigan、Pavel Starkov、Tom D. Sheppard
DOI:10.1021/jo400509n
日期:2013.5.3
range of amines. In most cases, the amide products can be purified by a simple filtration procedure using commercially available resins, with no need for aqueous workup or chromatography. The amidation of N-protected amino acids with both primary and secondary amines proceeds effectively, with very low levels of racemization. B(OCH2CF3)3 can also be used for the formylation of a range of amines in good
carboxylic acid and aminederivatives catalyzed by TiCp2Cl2. Arylacetic acid derivatives reacted with different amines to afford the corresponding amides in good to excellent yield except of aniline. Aryl formic acids failed to react with aniline but smoothly reacted with aliphatic amines and benzylamine in moderate to good yield, fatty acids reacting with benzyl and aliphatic amines give amides in good