Scopul nostru este sprijinirea şi promovarea cercetării ştiinţifice şi facilitarea comunicării între cercetătorii români din întreaga lume.
Autori: G. Rau, G. D. Mogosanu, L. Morusciag, A. Moanta
Editorial: Farmacia, 55, p.50-60, 2007.
The synthesis of a novel azoderivatives, 4-(N-phenylacetamidoxy) azobenzenes and
4-(N-phenylacetamidoxy)-4′-(phenylazo) biphenyls, has been completed through the condensation of the sodium azophenoxydes with N-chloroacetylaniline, and those structures established through spectral analysis (UV–Vis, IR, 1H–NMR, GC–MS). The UV–Vis spectra explain the absorption bands from K type – conjugated system Ar–N=N–Ar, E or B type – л- electron conjugation in the benzene rings, and R type – for –N=N– chromophore. The FTIR spectra comprise absorption bands specific to the groups
–N=N–, Ar–O–CH2–, –CO–NH–, Ar–CH3, Ar–CN, Ar–NO2, Ar–CF3, and benzene rings. The structural formulas of the novel azoderivatives, have been confirmed starting from the 1H–NMR spectra. The mass spectra are characterized by fragments obtained from the molecular ion, consequently of the bonds
O–CH2 and CO–NH splitting. Concerning the Triticum test, for all samples the inhibition of radicular elongation comparing to the reference sample has been obtained.
Cuvinte cheie: azoderivati, caracterizare fitobiologica // azoderivatives, phytobiological characterisation