Although the α‐oxygenation of amines is a highly attractive method for the synthesis of amides, efficient catalysts suited to a wide range of secondary and tertiary alkyl amines using O2 as the terminal oxidant have no precedent. This report describes a novel, green α‐oxygenation of a wide range of linear and cyclic secondary and tertiaryamines mediated by gold nanoparticles supported on alumina (Au/Al2O3)
尽管胺的α-加氧是合成酰胺的极具吸引力的方法,但使用O 2作为末端氧化剂的适用于各种仲烷基和叔烷基胺的有效催化剂尚无先例。该报告描述了由负载在氧化铝上的金纳米颗粒(Au / Al 2 O 3)介导的各种线性和环状仲胺和叔胺的新型绿色α-加氧反应。观察到的催化确实是非均相的,并且该催化剂可以重复使用。目前的α加氧利用O 2作为末端氧化剂,水作为酰胺的氧原子源。该方法产生的水是唯一的理论副产物,突出了本反应的环境友好性质。另外,本发明的α-加氧为使用H 2 18 O作为氧源合成18 O-标记的酰胺提供了一种便捷的方法。
Lipase-Catalyzed Syntheses of N-Octyl-Alkylamides in Organic Media
作者:Béatrice Tuccio、Elisée Ferré、Louis Comeau
DOI:10.1016/0040-4039(91)85079-k
日期:1991.6
Various lipases can be used in anhydrous hexane to obtained N-octyl-alkylamides in moderate yields.
可以在无水己烷中使用各种脂肪酶,以中等收率获得N-辛基-烷基酰胺。
One-pot reductive amination of carboxylic acids: a sustainable method for primary amine synthesis
作者:Robin Coeck、Dirk E. De Vos
DOI:10.1039/d0gc01441a
日期:——
carboxylic acids is a very green, efficient and sustainable method for the production of (bio-based) amines. However, with current technology, this reaction requires two to three reaction steps. Here, we report the first (heterogeneous) catalytic system for the one-pot reductive amination of carboxylic acids to amines, with solely H2 and NH3 as the reactants. This reaction can be performed with relatively cheap
Methyltrimethoxysilane (MTM) as a Reagent for Direct Amidation of Carboxylic Acids
作者:D. Christopher Braddock、Joshua J. Davies、Paul D. Lickiss
DOI:10.1021/acs.orglett.1c04265
日期:2022.2.11
reagent for the direct amidation of carboxylicacids with amines. Two simple workup procedures that provide the pure amide product without the need for further purification have been developed. The first employs an aqueous base-mediated annihilation of MTM. The second involves simple product crystallization from the reaction mixture providing a low process mass intensity direct amidation protocol.