Palladium-Catalyzed Double Carbonylation Using Near Stoichiometric Carbon Monoxide: Expedient Access to Substituted <sup>13</sup>C<sub>2</sub>-Labeled Phenethylamines
作者:Dennis U. Nielsen、Karoline Neumann、Rolf H. Taaning、Anders T. Lindhardt、Amalie Modvig、Troels Skrydstrup
DOI:10.1021/jo3009337
日期:2012.7.20
A novel and general approach for 13C2- and 2H-labeled phenethylamine derivatives has been developed, based on a highly convergent single-step assembly of the carbon skeleton. The efficient incorporation of two carbon-13 isotopes into phenethylamines was accomplished using a palladium-catalyzed doublecarbonylation of aryl iodides with near stoichiometric carbon monoxide.
基于高度收敛的碳骨架一步组装,已开发出一种新颖且通用的13 C 2-和2 H标记的苯乙胺衍生物的方法。使用钯催化的具有接近化学计量的一氧化碳的芳基碘化物的双羰基化作用,可以将两个碳13同位素有效地结合到苯乙胺中。
Synthesis of<i>Ortho</i>-alkoxy-aryl Carboxamides via Palladium-Catalyzed Aminocarbonylation
作者:Attila Takács、Artur R. Abreu、Andreia F. Peixoto、Mariette Pereira、László Kollár
DOI:10.1080/00397910802542028
日期:2009.4.7
Abstract Various aryl carboxamides with alkoxy substituents at the ortho-position, applicable as direct intermediates toward novel ligands, were synthesised viaaminocarbonylation of aryl-iodides (2-iodoanisole, 5-chloro-7-iodo-8-methoxy-quinoline, and 5-chloro-7-iodo-8-benzyloxy-quinoline) in the presence of in situ generated palladium(0) catalysts. Simple primary and secondary amines as well as aminoacid
Transition Metal‐Free N−S Bond Cleavage and C−N Bond Activation of Ugi‐Adducts for Rapid Preparation of Primary Amides and α‐Ketoamides
作者:Chao Liu、Johan Van der Eycken、Erik V. Van der Eycken
DOI:10.1002/chem.202301541
日期:2023.9.21
combination of an Ugi-4CR and a transition metal-free selective N−S bond cleavage and C−N bond activation, diverse primary amides and α-ketoamides were simultaneously obtained in a highly efficient, rapid, and step-economical manner. The reaction features broad substrate scope, excellent functional-group tolerance, and exclusive selectivity. Primary amides derived from the pharmaceuticals probenecid and febuxostat