Selective amidation by a photocatalyzed umpolung reaction
作者:Debasish Ghosh、Rajesh Nandi、Saikat Khamarui、Sukla Ghosh、Dilip K. Maiti
DOI:10.1039/c9cc01079c
日期:——
Herein, a metal-catalyzed organic transformation merged with another organophotocatalyst has been developed under mild conditions for the production of α-ketoamides.
在此,已经开发了一种金属催化的有机转化,与另一种有机光催化剂在温和条件下结合,用于生产α-酮酰胺。
Chemo- and Regioselective Asymmetric Synthesis of Cyclic Enamides through the Catalytic Umpolung Organocascade Reaction of α-Imino Amides
The efficient chemo- and regioselective catalytic asymmetric syntheses of enamides, which are important core structures of bioactive natural products, have been achieved through the first umpolung organocascade reaction of α-imino amides. A variety of enamides have been synthesized enantioselectively in high yields with up to 99% ee. Notably, both enantiomers of the products can be selectively prepared
Synthesis of α-Ketoamides from β-Ketonitriles and Primary Amines: A Catalyst-Free Oxidative Decyanation-Amidation Reaction
作者:Ya-Kai Zhang、Bin Wang
DOI:10.1002/ejoc.201900900
日期:2019.9.8
A catalyst‐free oxidative decyanation–amidation reaction is developed for the synthesis of α‐ketoamides using β‐ketonitriles, primaryamines, and hydrogen peroxide sodium carbonate adduct (Na2CO3·1.5H2O2). This method is a valuable and simple strategy for the decyanation reaction.
使用β-乙腈,伯胺和过氧化氢碳酸钠加合物(Na 2 CO 3 · 1.5H 2 O 2)开发了无催化剂的氧化脱氰-酰胺化反应,用于合成α-酮酰胺。该方法是用于脱氰反应的有价值且简单的策略。
A novel approach for the one-pot preparation of α-ketoamides by anodic oxidation
作者:Zhenlei Zhang、Jihu Su、Zhenggen Zha、Zhiyong Wang
DOI:10.1039/c3cc43685c
日期:——
The direct oxidative synthesis of α-ketoamides via anodic oxidation was developed by using dioxygen as a reactant under mild conditions. This methodology has a broad substrate scope (aromatic amines, aliphatic amines and ammonium acetate) and opens up an interesting and attractive avenue for the synthesis of α-ketoamide derivatives.
Copper-catalyzed aerobic oxidative synthesis of α-ketoamides from methyl ketones, amines and NIS at room temperature
作者:Juan Zhang、Ying Wei、Shaoxia Lin、Fushun Liang、Pengjun Liu
DOI:10.1039/c2ob26586a
日期:——
A simple, efficient and practical copper-catalyzedaerobicoxidative synthesis of α-ketoamides from aryl methyl ketones, aliphatic amines and N-iodosuccinimide (NIS) has been developed. The one-pot reaction may proceed smoothly at room temperature in the open air. The possible mechanism for the formation of α-ketoamides was proposed. Molecular oxygen in air functions as both an oxidant and an oxygen