Synthesis of new macrocyclic polyether di-or tetraester ligands containing pyrazole units

J Elguero, P Navarro, MIR Franco

Index: Elguero, J.; Navarro, P.; Franco, M. I. Rodriguez Chemistry Letters, 1984 , p. 425 - 428

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Citation Number: 3

Abstract

A new series of macrocyclic polyether–diester compounds containing one or two pyrazole rings (NH or N-methyl substituted) have been prepared by treating 3, 5-pyrazolyldicarbonyl chlorides with tetraethylene glycol in the presence of triethylamine. Their complexation abilities towards the shift reagent Eu (Fod) 3 have been studied by 1 H NMR in Cl 3 CD solution.