Nitration of Methyl Benzoate Essay

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NITRATION
OF
METHYL
BENZOATE
 
 Purpose:
The main objective of this experiment was to synthesize methyl nitrobenzoate from methyl benzoate, using the mixture of nitric and sulfuric acid by performing the process of electrophillic aromatic substitution. During this reaction, the combination of HNO3 and H2SO4 made a nitrating solution. The crystallization was done to accomplish pure product. The melting point and Thin Layer Chromatography (TLC) were performed to test the purity of the product. Using the methyl benzoate reaction product, methyl nitrobenzoate, one can determine the meta-substituted, para-substituted and orthosubstituted of the final products. Furthermore, HNMR and IR used to investigate the quality of the product. …show more content…
After the mass of the crude product was measured, the recrystallization was done for more purification; the solution looked clear prior to it’s cooling to room temperature. After the solution cooled to the room temperature and vacuum filtration was done again on recrystallization product, the solution was a white shiny with crystalline solid appearance. The melting point of the Meta-Methyl nitrobenzoate product formed was at 76.2 ‐ 78°C. The appearances of the TLC for the crude product, starting material and recrystallized appear to the similar; they all looked dark brown under the UV light. Also, their Rf values indicate that the recrystallized solute moved less distance compare to the crude product and started material. This suggests that the product made was Meta-Methyl nitrobenzoate even if it has little different melting point from the literature melting point which is 7880°C. Conclusion/Discussion: During the electrophilic aromatic substitution reaction between methyl benzoate and a nitrating solution of sulfuric and nitric acids,

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