Cifuentes, Carlos; Cubides, Marianna; Portilla, Jaime

DOI: PMID:

Abstract

A simple and efficient methodology was developed for converting formyl(hetero)arenes into the corresponding hydroxylated derivatives in high yields (95–99%) using Oxone® as the oxidant. This Dakin-like reaction proceeded via C–C bond cleavage with the insertion of an oxygen atom into the formyl group, forming the corresponding formyl esters (up to 99%), which then underwent basic hydrolysis to yield the desired alcohols. Although the substrate scope mainly included 3-hydroxypyrazolo[1,5-a]pyrimidines, other substrates featuring typical fluorophores (e.g., triphenylamine, anthracene, , fluorene, and ) were also tested. Moreover, we demonstrated the functionalization of the representative 3-hydroxypyrazolo[1,5-a]pyrimidine derivatives obtained using our developed methodology involving alkylation, acylation, and sulfonylation reactions.

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