6533b826fe1ef96bd128483c

RESEARCH PRODUCT

On the reaction of some 5-polyfluoroaryl-1,2,4-oxadiazoles with methylhydrazine: synthesis of fluorinated indazoles

Nicolò VivonaPaola PierroSilvestre BuscemiAntonio Palumbo-piccionelloIvana PibiriAndrea Pace

subject

MethylhydrazineIndazoleMethylamineOrganic ChemistrySettore CHIM/06 - Chimica OrganicaBiochemistryMedicinal chemistryChemical synthesischemistry.chemical_compoundchemistryNucleophileDrug DiscoveryStructural isomerMoietyOrganic chemistryDimethylamine124-Oxadiazole Indazole Rearrangements Fluorinated heterocycles

description

The reaction of 5-polyfluoroaryl-1,2,4-oxadiazoles with methylhydrazine has been studied and the synthesis of fluorinated N-methylindazoles has been realized. Rearrangement reactions showed predominantly formation of N(1)-methylindazole regioisomers. Starting compounds were preliminarily functionalized at the polyfluoroaryl moiety through fluorine displacement with nucleophiles (methanol, methylamine, dimethylamine), allowing the obtainment of target indazoles substituted at the C(6) position.

10.1016/j.tet.2008.10.094http://hdl.handle.net/10447/34824