6533b859fe1ef96bd12b8368

RESEARCH PRODUCT

Synthesis of Amino-1,2,4-triazoles by Reductive ANRORC Rearrangements of 1,2,4-Oxadiazoles

Silvestre BuscemiAndrea PaceAntonio Palumbo-piccionelloAnnalisa GuarcelloNicolò Vivona

subject

oxadiazole triazole heterocycles rearrangementchemistry.chemical_classificationOrganic ChemistryHydrazineSettore CHIM/06 - Chimica OrganicaElectron acceptorMedicinal chemistryChemical synthesischemistry.chemical_compoundHydroxylaminechemistryChemical reductionAmine gas treatingReactivity (chemistry)

description

The reaction of various 1,2,4-oxadiazoles with an excess of hydrazine in DMF has been investigated. 3-Amino- 1,2,4-triazoles are produced through a reductive ANRORC pathway consisting of the addition of hydrazine to the 1,2,4-oxadiazole followed by ring-opening, ring-closure, and final reduction of the 3-hydroxylamino-1,2,4-triazole intermediate. The general applicability of 1,2,4-oxadiazoles ANRORC reactivity is demonstrated also in the absence of C(5)-linked electron-withdrawing groups.

https://doi.org/10.1021/jo102049r