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Polyaminopolycarboxylic acids are a well known class of ligands employed for metal ion complexation. Despite the large commercial availability, reports of their use as substrates for direct structural modifications are rare. Herein we report a simple and efficient protocol for the preparation of substituted polyaminopolycarboxylic ligands relying on a one-pot N-alkylation–Stevens rearrangement cascade.

Graphical abstract: Stevens rearrangement as a tool for the structural modification of polyaminopolycarboxylic ligands

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