New methodology for the preparation of 3-hydroxy-2-pyridinone (3,2-HOPO) chelators and extractants. Part 2: Reactions of alcohols, phenols, and thiols with an electrophilic 3,2-HOPO reagent

The alkylation of mesylate salt 1 with alcohols, phenols, and their sulfur analogs provides a convenient method for the synthesis of a variety of HOPO derivatives.