Synthesis of furo[3,2-b]pyrrole-5-carboxhydrazides and Their Cu, Ni and Co Complexes

Mária Maliarová; Tatiana Ďurčeková; Filip Kraic; Ján Titiš; Renata Gašparová

doi:10.3390/ecsoc-15-00568

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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

Published: 30 October 2011 by MDPI in The 15th International Electronic Conference on Synthetic Organic Chemistry session General Organic Synthesis

https://doi.org/10.3390/ecsoc-15-00568

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

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