Synthesis of new -aminophosphonates by one-pot reaction using 1,4-dimethyl piperazine as a catalystAuthor(s): S.Rasheed, K.Reddi Mohan Naidu, E.Dadapeer, S.Adam, C.Naga Raju
The Schiffs bases were prepared by reacting 9-ethyl-3-amino carbazole with substituted aromatic aldehydes in refluxing ethanol. Dialkyl phosphite undergoes addition readily with aromatic Schiffs bases to give - aminophosphonates(Kabachnik-Fields reaction) in presence of catalytic amount of 1,4-dimethyl piperazine. The structures of the title compounds were established by elemental analysis, IR, 1H, 13C, 31P NMR and LCMS mass spectral data. The anti-microbial and anti-oxidant activitiy of these compoundswere evaluated and they exhibited significant antimicrobial and anti-oxidant activity.