An amino group is more basic than a hydroxy group. The amine on p-aminophenol would be protonated, so it would no longer be nucleophilic. That leaves the hydroxy group as the only nucleophile that could attack the acetic anhydride. The major product is p-aminophenyl acetate.
The balanced equation for the reaction between salicylic acid and acetic anhydride to form aspirin (acetylsalicylic acid) is: salicylic acid + acetic anhydride → aspirin + acetic acid.
The reaction between salicylic acid and acetic anhydride involves the substitution of a hydroxyl group in salicylic acid with an acetyl group from acetic anhydride. This reaction is catalyzed by an acid, typically sulfuric acid, and results in the formation of aspirin and acetic acid as byproducts.
The reaction between methylamine and acetic anhydride results in the formation of N-methylacetamide as the primary product. In this reaction, acetic anhydride reacts with methylamine to form an amide functional group. This reaction is a common method for the synthesis of amides in organic chemistry.
If excess acetic anhydride is not removed from the reaction vessel, it can lead to side reactions or undesired byproducts in the final product. It could also affect the purity of the desired compound and make purification more challenging. Additionally, it can pose safety hazards as acetic anhydride is a corrosive and hazardous chemical.
Acetic anhydride undergoes hydrolysis in the presence of water to form acetic acid and a byproduct, typically a carboxylic acid or alcohol. The reaction is a typical nucleophilic acyl substitution reaction, where water acts as a nucleophile attacking the acetic anhydride to break the anhydride bond and form acetic acid.
The reaction is: (CH3CO)2O + H2O = 2 CH3COOH
When zinc is reacted with acetic anhydride and glacial acetic acid, a complex called zinc acetate is formed. The reaction typically involves the displacement of acetic anhydride by acetic acid to form zinc acetate. The overall reaction is a redox reaction where zinc is oxidized and acetic anhydride is reduced.
The balanced equation for the reaction between salicylic acid and acetic anhydride to form aspirin (acetylsalicylic acid) is: salicylic acid + acetic anhydride → aspirin + acetic acid.
The reaction between salicylic acid and acetic anhydride involves the substitution of a hydroxyl group in salicylic acid with an acetyl group from acetic anhydride. This reaction is catalyzed by an acid, typically sulfuric acid, and results in the formation of aspirin and acetic acid as byproducts.
The reaction between methylamine and acetic anhydride results in the formation of N-methylacetamide as the primary product. In this reaction, acetic anhydride reacts with methylamine to form an amide functional group. This reaction is a common method for the synthesis of amides in organic chemistry.
If excess acetic anhydride is not removed from the reaction vessel, it can lead to side reactions or undesired byproducts in the final product. It could also affect the purity of the desired compound and make purification more challenging. Additionally, it can pose safety hazards as acetic anhydride is a corrosive and hazardous chemical.
Acetic anhydride undergoes hydrolysis in the presence of water to form acetic acid and a byproduct, typically a carboxylic acid or alcohol. The reaction is a typical nucleophilic acyl substitution reaction, where water acts as a nucleophile attacking the acetic anhydride to break the anhydride bond and form acetic acid.
The chemical reaction between acetic anhydride and salicylic acid is called esterification. This reaction forms acetylsalicylic acid, which is commonly known as aspirin.
The reaction between acetyl chloride and sodium acetate would likely result in the formation of acetic anhydride and sodium chloride. Acetyl chloride would react with the sodium acetate to form acetic anhydride, along with sodium chloride as a byproduct.
Adding a small amount of acetic anhydride helps to facilitate the acetylation reaction with aniline, leading to the formation of acetanilide. The acetic anhydride serves as an acetylating agent that transfers an acetyl group to the amine group of aniline, resulting in the desired product. The use of an excess of acetic anhydride is avoided to prevent side reactions and to optimize the yield of acetanilide.
A reaction between an alcohol and an anhydrid is usually exothermic, so I would say it is.
The balanced chemical equation for the reaction involving acetic anhydride (C4H6O3) is: 2C4H6O3 → 4CH3COOH + (CH3CO)2O