Some new macrocyclic dibenzotetraoxadiamides, tribenzotetraoxadimides, tribenzopentaoxadiamide, tribenzohexaoxadiamide, and tetrabenzoheptaoxadiamide 15-22 have been prepared. These compounds were obtained in the macrocyclization step by reacting the diamines 6 and 7 with appropriate dicarboxylic acid dichlorides 8-14. The cyclization does not require high dilution techniques or template ef...

Palladium isolation and refining through solvent extraction suffer from limited stability of commercial reagents or availability robust in nitrate media. Several performing solvents based on diamide have been proposed, but their preparation requires synthetic chemistry skills. In the present work, we propose use readily accessible N,N,N’,N’-tetrahexylmalonamide (THMA). This reagent revealed sup...