A series of cationic Ru(II)(η6-p-cymene) complexes with thioether-functionalized N-heterocyclic carbene ligands (imidazole and benzimidazole-based) have been prepared and used in the amidation reaction. The scope of the reaction has been investigated using the best catalyst.
一系列阳离子Ru(II)(η 6 - p -甲基异丙基苯)配合物与硫醚官能化的N-杂环卡宾配体(咪唑和苯并咪唑基)已被制备并用于酰胺化反应。已经使用最好的催化剂研究了反应的范围。
Catalytic amidation of unactivated ester derivatives mediated by trifluoroethanol
作者:Nicola Caldwell、Craig Jamieson、Iain Simpson、Allan J. B. Watson
DOI:10.1039/c5cc02895g
日期:——
A practical, catalytic protocol for amidation of unactivated esters has been developed using cheap and readily available reagents.
已开发出一种实用的、催化的酰胺化协议,可使用廉价且易获得的试剂对未活化的酯进行酰胺化。
Versatile Palladium-Catalyzed Approach to Acyl Fluorides and Carbonylations by Combining Visible Light- and Ligand-Driven Operations
作者:Yi Liu、Cuihan Zhou、Meijing Jiang、Bruce A. Arndtsen
DOI:10.1021/jacs.2c01951
日期:2022.6.1
We describe the development of a general palladium-catalyzed carbonylative method to synthesize acyl fluorides from aryl, heteroaryl, alkyl, and functionalized organic halides. Mechanistic analysis suggests that the reaction proceeds via the synergistic combination of visible light photoexcitation of Pd(0) to induce oxidative addition with a ligand-favored reductive elimination. These together create
from nitroalkanes and amines. In contrast to traditional oxidative catalysis, this catalytic system involves reversing the polarities of two catalytic components (umpolung) by means of a hypervalentiodinereagent. A variety of functional groups were tolerated in the reaction, suggesting that they have the potential for use in other types of oxidative catalytic reactions.