A convergentpairedelectrolysis catalyzed by a B12 complex for the one-pot synthesis of a tertiary amide from organic trichlorides (R-CCl3) has been developed. Various readily available organic trichlorides, such as benzotrichloride and its derivatives, chloroform, dichlorodiphenyltrichloroethane (DDT), trichloro-2,2,2-trifluoroethane (CFC-113a), and trichloroacetonitrile (CNCCl3), were converted
Pd/C-Catalyzed Aminocarbonylation of Aryl Iodides via Oxidative C–N Bond Activation of Tertiary Amines to Tertiary Amides
作者:Rajendra S. Mane、Bhalchandra M. Bhanage
DOI:10.1021/acs.joc.5b02385
日期:2016.2.5
This work reports oxidative N-dealkylation/carbonylation of tertiaryamines to tertiary amides by using molecular oxygen as a sole oxidant using a Pd/C catalyst. This protocol is free from ligands, additives, bases, and cocatalysts. Different tertiaryamines as well as aryl iodides have been examined for this transformation, providing desired products in good to excellent yield.
The ‘inverse electron-demand’ Diels–Alder reaction in polymer synthesis. Part 5: Preparation and model reactions of some electron-rich bis-dienamines
作者:András Kotschy、János Faragó、Antal Csámpai、David M Smith
DOI:10.1016/j.tet.2004.02.035
日期:2004.4
The m- and p-phenylene-bridged bis-azolopyridinium salts have been synthesized and converted into the corresponding bis-dienamines by reaction with pyrrolidine. These dienamines react readily with dimethyl 1,2,4,5-tetrazine-dicarboxylate to yield the bis-azolylvinyl-pyridazines.
Dilithiated synthons of tertiary benzamides, phthalamides, and 0,0′-aryl dicarbamates
作者:R.J. Mills、R.F. Horvath、M.P. Sibi、V. Snieckus
DOI:10.1016/s0040-4039(00)98418-1
日期:1985.1
Dilithiated species 1, 2, and 3, generated by metal-halogenexchange and directed ortho metalation, undergo reaction with electrophiles to afford, in high yield, polysubstituted aromatics 6, 7, and 8 respectively; 9 is formed via a bis anionic Fries rearrangement of 3.
Silica-Supported 2,4,6-Trichloro-1,3,5-triazine as an Efficient Reagent for Direct Conversion of Carboxylic Acids to Amides Under Solvent-Free Conditions
A very simple and efficient solvent-free method for the direct conversion of carboxylicacids to primary, secondary, tertiary alkyl, and aromatic amides in the presence of the corresponding ammonium salts, silica-supported 2,4,6-trichloro-1,3,5-triazine, and triethylamine is described. The reactions proceed rapidly at roomtemperature, and the products are obtained in moderate to excellent yields.