Structural aspects of adducts of N-phthaloylglycine and its derivatives

N-phthaloylglycine forms 2:1 adduct with 1,3-dihydroxybenzene and 1:2 adduct with 2-aminopyrimidine. Whereas N-phthaloylglycine form salts with 2,6-diaminopyridine and with 8-hydroxyquinoline. The 1:1 adduct of N,N′-bis(glycinyl)pyromellitic diimide with dimethylsulphoxide, 2-aminopyrimidine and 4,4′-dihydroxybiphenyl are prepared and characterised. The reaction of N,N′-bis(glycinyl)pyromellitic diimide with 2,6-diaminopyridine gives corresponding salt.