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 Reaction routes of Metronidazole
  • Reaction routes of Metronidazole
  • (CAS NO.: ), with its chemical name of 2-Methyl-5-nitro--1-ethanol, could be produced through the following several reaction routes.

    1). Preparation method one:
    The title compound can also be obtained by alkylation, in different solvents, of 1-(acetoxymethyl)-2-methyl-4-nitro (I) with either ethylene sulfate (II) or with bis-(2-acetoxyethyl) sulfate (III) -generated from ethyleneglycol diacetate (IV) and either dimethyl sulfate or H2SO4 - followed by hydrolysis or alcoholysis treatment.

    Reaction routes of Metronidazole

    2). Preparation method two:
    (I) is converted into the bisulfate salt, and then nitrated by means of a sulfonitric mixture in Ac2O to produce 2-methyl-4-nitroimidazole (II) . In a variant of this procedure, 2-methylimidazole (I) is nitrated by using a ferric nitrate-tonsyl adduct in several solvents. Imidazole (II) is then regioselectively alkylated with boiling 2-chloroethanol to produce the title compound. Alternatively, the alkylation of (II) has been reported by treatment with ethylene oxide (III) under acidic conditions.

    Reaction routes of Metronidazole


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