An efficient and convenient palladium-catalyzed carbonylative procedure for the synthesis of bis(indolyl)methanes has been established for the first time. With TFBen (benzene-1,3,5-triyl triformate) as the solid CO source, aryl iodides and indoles were transformed into the corresponding bis(indolyl)methane derivatives in moderate to excellent yields.
modulated as powerful N,N′ donor ligands for the copper‐catalyzedSonogashirareaction. Ligand screening experiments on 11 BIM compounds found that 3,3′‐(4‐chlorophenyl)methylenebis(1‐methyl‐1H‐indole) (10%) efficiently accelerated CuCl (5%)‐catalyzed cross‐coupling of aryl iodides with terminal alkynes. A wide range of substituted aryl iodides and/or alkyl‐ and aryl‐substituted terminal alkynes were
An Efficient Preparation of Bis(indole)methanes Catalyzed by Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate Salts in Aqueous Medium
作者:Shiuh-Tzung Liu、Bei-Sih Liao、Jwu-Ting Chen
DOI:10.1055/s-2007-990788
日期:2007.10
An efficient and direct preparation of bis(indole)methanes from indole and the corresponding carbonyl compound in water catalyzed by metal salts of tetrakis[3,5-bis(trifluoromethyl)phenyl]borate has been developed.
Dimethylurea/citric acid as a highly efficient deep eutectic solvent for the multi-component reactions
作者:BEHNAZ BAFTI、HOJATOLLAH KHABAZZADEH
DOI:10.1007/s12039-014-0624-x
日期:2014.5
Dimethylurea/citric acid deep eutectic solvent was used as a dual catalyst and a green reaction medium for the efficientsynthesis of bis(indolyl)methanes, quinolines and aryl-4, 5-diphenyl-1H-imidazoles. Ease of recovery and reusability of DES with high activity makes this method efficient and eco-friendly. A new method for the synthesis of bis(indolyl)methanes, quinolines and aryl-4, 5-diphenyl-1H-Imidazole