Please login first
Synthesis of furo[3,2-b]pyrrole-5-carboxhydrazides and Their Cu, Ni and Co Complexes
, , , , *
1  Department of Chemistry, University of SS. Cyril and Methodius, Nám. J. Herdu 2, Trnava, SK-917 01, Slovak Republic

Abstract: N\'-[(4-oxochromen-3-yl)methylidene]-4-R-furo[3,2-b]pyrrole-5-carboxhydrazides 3 were prepared by treatment of substituted carboxhydrazides 1 with 4-oxo-4H-chromen-3-carboxaldehyde 2 in ethanol in the presence of p-TsOH. Compounds 3 were subsequently used as ligands in complexation reactions with solutions of metal (M2+) chlorides or nitrates: [Ni(NO3)2.6H2O, Co(NO3)2.6H2O, CoCl2.6H2O, CuCl2.2H2O] to give complexes 4.
Keywords: 4-oxo-4H-chromen, carboxhydrazide, furo[3,2-b]pyrrole, complexes