What is the actual yield of benzocaine?
What is the actual yield of benzocaine?
The theoretical yield of benzocaine was 3.6135grams and the mass obtained in the experiment was 2.28grams, giving a percentage yield of 63 %. This is a high percentage yield, representing a productive synthesis.
Why p-aminobenzoic acid precipitates when h2so4 is added?
When sulfuric acid is initially added to the mixture, p-aminobenzoic acid assumes its zwitterion form, wherein the carboxyl group is deprotonated and the amino group protonated. As more acid is added, the pH increases and the protons in the solution also increases.
What is benzocaine used for?
Benzocaine is a topical anesthetic contained in some marketed over-the-counter (OTC) oral drug products intended to relieve pain from a variety of conditions such as sore throats, canker sores, and irritation of the mouth and gums.
What are the steps in the synthesis of benzocaine?
1 SYNTHESIS OF BENZOCAINE 2 the resonance窶都tabilized intermediate I, followed by (2) the nucleophilic attack of the alcohol. The subsequent transfer of the proton (3), loss of water (4), and loss of proton (5) then give the ・］al observed products. The reverse reaction to yield the carboxylic acid and alocohol follows the same steps in the opposite
How is the synthesis of succinaldehyde done?
Synthesis of succinaldehyde by the neutral hydrolysis of 2,5-dimethoxytetrahydrofuran. Succinaldehyde produced in this way was obtained as a pale-yellow liquid and could be distilled under reduced pressure, but it was prone to polymerisation in just a few hours.
Can a benzocaine be extracted from sodium bisulfate?
Under these conditions, much of the nonionic benzocaine formed in the experiment should remain dis- solved, and some ionic sodium bisulfate and unreacted sodium p–aminobenzoate may precipitate. Extraction of ths mixture with ether permits the separation of the benzocaine from the ionic compounds.
How is benzocaine produced in a reflux reaction?
The intention of the experiment was to synthesise benzocaine, an ester, from 4-aminobenzoic acid, a carboxylic acid, by Fischer Esterification. The mechanism in figure 1 was to combined 4-aminobenzoic acid and ethanol in a reflux reaction with the addition of sulphuric acid as a catalyst to produce the product.