Transition metal‐catalyzed aminocarbonylation of aryl halides with CO and amines, pioneered by Heck and co‐workers in the 1970s, is among the most commonly employed reactions to make aromatic amides. A catalyst‐free aminocarbonylation of aryliodides with CO and amines, which simply uses photoirradiation conditions by Xe‐lamp, has now been developed. This methodology shows broad functional‐group tolerance
immobilised on a supported ionic liquid phase (SILP) with adsorbed 1-butyl-4-methylpyridinium chloride, was investigated in aminocarbonylation reactions. Double carbonylation was found to be the main reaction using different iodoarenes and aliphatic amines as substrates. Application of anilinederivatives as nucleophiles led to the exclusive formation of substituted benzamides. The stabilisation effect
Mono- and double carbonylation of aryl iodides with amine nucleophiles in the presence of recyclable palladium catalysts immobilised on a supported dicationic ionic liquid phase
Silica modified with organic dicationic moieties proved to be an excellent support for palladium catalysts used in the aminocarbonylation of aryl iodides.
The first heterogeneous carbonylation reaction carried out with palladiumcatalysts immobilised on phosphonium ion modified silica supports is reported. The supported ionic liquidphases were characterised by solid state NMR and FT-IR measurements. The presence of the phosphonium ions on the surface made it possible to carry out double carbonylation in apolar toluene efficiently that resulted in reduced
Highly Efficient Aminocarbonylation of Iodoarenes at Atmospheric Pressure Catalyzed by a Robust Acenaphthoimidazolyidene Allylic Palladium Complex
作者:Weiwei Fang、Qinyue Deng、Mizhi Xu、Tao Tu
DOI:10.1021/ol401550h
日期:2013.7.19
A robust allylic palladium-NHC complex was developed and exhibited extremely high catalytic activity toward aminocarbonylation of various (hetero)aryl iodides under atmospheric carbon monoxide pressure, in which a broad range of secondary and primary amines were well tolerated. In addition, the concise synthesis of an anticancer drug tamibarotene was accomplished even in a gram scale, further highlighting the practical applicability of the protocol.