19145-73-4Relevant academic research and scientific papers
A CONVENIENT METHOD FOR THE SYNTHESIS OF CARBOXAMIDES AND PEPTIDES BY THE USE OF TETRABUTYLAMMONIUM SALTS
Watanabe, Yutaka,Mukaiyama, Teruaki
, p. 285 - 288 (1981)
Various carboxamides and peptides are prepared in good yields by treatment of free acids and amines in H2O-dichloromethane or aqueous THF with bis(o-nitrophenyl) phenylphosphonate in the presence of tetrabutylammonium hydrogen sulfate or bromide.Carboxylic esters are also successfully converted to amides via carboxylate salts in one-pot.
Mesoporous niobium oxide spheres as an effective catalyst for the transamidation of primary amides with amines
Ghosh, Subhash Chandra,Li, Cheng Chao,Zeng, Hua Chun,Ngiam, Joyce S. Y.,Seayad, Abdul M.,Chen, Anqi
, p. 475 - 484 (2014/05/20)
Mesoporous niobium oxide spheres (MNOS), conveniently prepared by a novel antisolvent precipitation approach, have been shown to be an effective catalyst for the transamidation of primary amides with amines. This novel transamidation can be efficiently carried out under solvent-free conditions and is applicable to a wide range of primary amides and amines to provide N-alkyl amides in good to excellent yields. The catalyst is highly stable and reusable. The application of this transamidation reaction has been demonstrated in the synthesis of antidepressant drug moclobemide and other druglike compounds.
