Ligand-Free Pd-Catalyzed Double Carbonylation of Aryl Iodides with Amines to α-Ketoamides under Atmospheric Pressure of Carbon Monoxide and at Room Temperature
作者:Hongyan Du、Qing Ruan、Minghao Qi、Wei Han
DOI:10.1021/acs.joc.5b01249
日期:2015.8.7
A general Pd-catalyzed double carbonylation of aryl iodides with secondary or primary amines to produce α-ketoamides at atmospheric CO pressure has been developed. This transformation proceeds successfully even at room temperature and in the absence of any ligand and additive. A wide range of aryl iodides and amines can be coupled to the desired α-ketoamides in high yields with excellent chemoselectivities
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。
Iodobenzene derivatives possessing various substituents (amino, hydroxy, tert-butyl, methyl, isopropyl, phenyl, fluoro, chloro, methoxycarbonyl, acetyl, trifluoromethyl, nitro) in the para position were aminocarbonylated using tert-butylamine and n-butylamine as N-nucleophiles. A palladium(0) catalyst formed in situ from palladium(II) acetate and triphenylphosphine was used. Carboxamide and ketocarboxamide
Application of γ-Valerolactone as an Alternative Biomass-Based Medium for Aminocarbonylation Reactions
作者:Diána Marosvölgyi-Haskó、Blanka Lengyel、József M. Tukacs、László Kollár、László T. Mika
DOI:10.1002/cplu.201600389
日期:2016.11
γ-Valerolactone (GVL) was proposed as a renewable, nontoxic reactionmedium with negligible vapor pressure for homogeneous Pd-catalyzed aminocarbonylationreactions. Iodobenzene as a model substrate and its 4-substituted derivatives were converted to the corresponding 2-ketocarboxamides with high conversions and chemoselectivities in γ-valerolactone. The effect of carbon monoxide pressure and reaction