Give the production of aspirin
The production of aspirin involves a series of organic reactions known as the esterification process. Aspirin, or acetylsalicylic acid, is synthesized from salicylic acid through the following steps:
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Acetylation Reaction:
- Salicylic acid reacts with acetic anhydride, which is composed of two acetyl groups (CH3CO): Salicylic acid+Acetic anhydride→Acetylsalicylic acid (Aspirin)+Acetic acidSalicylic acid+Acetic anhydride→Acetylsalicylic acid (Aspirin)+Acetic acid
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Catalyst Addition:
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i) Rearrangement of carbocation in E1 reaction
ii) Isotope effect in E2 reactions
Discuss the reaction of carbenes with trans-2 butane and cis-2-butene. Why is the stereospecificity of these reactions lost when these reactions are carried out in the presence of an inert gas?
Explain how is NMR spectroscopic study involved in predicting aromaticity of a compound. Why don’t aromatic compounds usually undergo nucleophilic substitution reactions?
Give the product (s) and mechanism of the following reactions:
State Hoffmann rule.
Explain why photo-induced [2+2] cycloaddition is allowed and thermally induced [2+2] cycloaddition is forbidden.
Fill in the following blanks.
i) Oxidation of ethene in presence of palladium is known as …………………..
ii) Reduction of aldehyde to alkane by hydrazine is known as ………………......