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1,2-azoles

1,2-azoles - [DePa] Departamento de Programas …depa.fquim.unam.mx/amyd/archivero/AZOLES1,2_31931.pdfsulfonamide aromatic heterocyclic rings Me Me 1-102 1. (MeO)2S02 2. NaOH/H20 pyrazole

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1,2-azoles

Antibióticos.Sulfonamidas

sulfametoxazol sulfatiazol sulfafurazol

antihelmínticos

mebendazol albendazol

tiabendazol fenbendazol

niridazol levamisol

Two routes for the ringsynthesis of1,2- azoles

Synthesis of 1,2–azoles from 1,3-dicarbonylcompounds and hydrazines or hydroxylamine

reactividad

Reactions with Electrophilic Reagents

Substitution atCarbon

Reactions with Bases

C-Metallation andreactions.Metal–halogenexchange