Synthesis of paracetamol by acetylation

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  • It introduces an acetyl group into a chemical compound
  • Paracetamol may be made by acetylation of para-aminophenol (obtained by reduction of para-nitrophenol) with acetic acid or acetic anhydride

    In the first stage, phenol is nitrated and the isomers obtained are separated

    Synthesis of Paracetamol by Acetylation | This expansive and practical textbook contains organic chemistry experiments for teaching in the laboratory at the

    1 mol) previously adsorbed on H-clinoptilolite (25 g)

    p-aminophenol is reacted with 80% of acetic acid

    RESULTS – Synthesis of Paracetamol Figure 1: Results Table – Weight of 4-Aminophenol Reactant: 4- aminophenol Weight of Weighing Boat (g) 0

    Dissolve 500 mg of aniline in 14 mL of water

    6 mL of acetic anhydride and prepare a solution of 530 mg of sodium acetate in 3 mL of water

    Necessity of drug in this enormous

    Paracetamol is formed by acetylation of p-amino phenol with acetic anhydride in aqueous medium

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    The reaction proceeds in acetic acid at elevated temperatures without any metallic catalyst

    In the 1880s paracetamol and phenacetin ( Figure 1) were found to possess antipyretic and later Paracetamol can be taken in a number of ways; Tablets (500 mg) - the simplest form of taking a medicine for most adults - 1 or 2 tablets is well below the level at which there are toxic effects

    Aniline’s lone pair is taking part in resonance across the phenyl ring so it is barely able to attack

    As this step is performed regardless of the preceding route of synthesis, production of During the practice, the undergraduates perform the flow synthesis of paracetamol, a common painkiller by two different N-acylations: reacting the p-aminophenol substrate with acetic anhydride and, in the second case, with ammonium acetate

    Heat the flask gently on the steam bath A direct synthesis of paracetamol (acetaminophen) from hydroquinone has been developed using ammonium acetate as an amidating agent

    Step 3: Mix the solution and keep the flask in warm water for 15 minutes

    The para-isomer was separated from the ortho-isomer by fractional distillation

    As the main use for paracetamol is as a pharmaceutical, the presence of

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