transfer reaction of aromatic esters with aryl halides/arenols was developed. The present reaction can transfer an ester functional group from certain aromatic esters to haloarenes. This ester transfer reaction involves two oxidative additions—one from the C–C bond of the aromatic ester and one from the C–halogen bond of haloarenes—onto a nickel catalyst. The utilization of a Ni/dcypt catalyst capable
Nickel-Catalyzed Decarbonylative Amination of Carboxylic Acid Esters
作者:Christian A. Malapit、Margarida Borrell、Michael W. Milbauer、Conor E. Brigham、Melanie S. Sanford
DOI:10.1021/jacs.9b13531
日期:2020.4.1
synthetic chemists. This report describes the development of a nickel-catalyzeddecarbonylative reaction that couples (hetero)aromatic esters with a broad scope of amines to form (hetero)aryl amine products. The successful realization of this transformation was predicated on strategic design of the cross-coupling partners (phenol esters and silyl amines) to preclude conventional reactivity that forms
“Dance reaction” on the aromatic ring is a powerful method in organic chemistry to translocate functional groups on arene scaffolds. Notably, dance reactions of halides and pseudohalides offer a unique platform for the divergent synthesis of substituted (hetero)aromatic compounds when combined with transition-metal-catalyzed coupling reactions. Herein, we report a tandemreaction of ester dance and
efficient palladium-catalyzed synthesis of esters from readily available arenes has been developed. These C–H bond esterifications were achieved relying on the regioselective thianthrenation to generate the aryl-TT salts, which were treated as reactive electrophilic substrates to couple with phenol formate and N-hydroxysuccinimide (NHS) formate giving access to phenol esters and NHS esters, respectively
Novel aromatic poly(ether ketones) having imide, amide, ester, azo, quinoxaline, benzimidazole, benzoxazoie, or benzothiazole groups, comprising, for example, a repeat unit
are prepared by Friedel Crafts polymerization.