1.The acetylation of salicylic acid may form a mixed anhydride as temporary side product. Typically, this compound rearranges to acetylsalicylic acid (aspirin). Provide a mechanism for this reaction.
2. Which of the following two compounds do you expect to be a stronger acid? Explain your answer.
Homework Answers
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1.The acetylation of salicylic acid may form a mixed anhydride
as temporary side product. Typically, this...
Please help woth mechanisms and answers for these! 5. Shown below is the mechanism presented for...
Please help woth mechanisms and answers for these!
5. Shown below is the mechanism presented for the formation of biasplatin in reference 1 from the Experiment document. The amounts used of each reactant are shown. Either draw or describe a better alternative to this mechanism. (Note that the first step represents two steps combined and the proton loss is not even shown; fixing these is not the desired improvement.) 0.15 mmol 1.1 mmol 4. The acetylation of salicylic acid may...
H3PO4 OH + OH OH salicylic acid acetic anhydride acetic acid acetylsalicylic acid (aspirin) 1. Why...
H3PO4 OH + OH OH salicylic acid acetic anhydride acetic acid acetylsalicylic acid (aspirin) 1. Why is it better to perform acetylation with acetic anhydride rather than using a Fischer esterification with acetic acid? 2. Draw a complete arrow-pushing mechanism for the reaction. 3. When an old sample of aspirin is left in moist conditions, it will begin to smell like vinegar. Draw a reaction scheme and briefly explain what happened.
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting...
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting reactant is (circle one): Salicylic Acid or Acetic Anhydride Calculation for Limiting Reactant: 3. Theoretical yield of aspirin (9) Calculation for Theoretical Yield of aspirin: 4. Mass of filter paper 0.3369 N 5. Mass of filter paper + aspirin 2.471g 6. Experimental Yield of aspirin (g) 7. Percent Yield Synthesis of Aspirin An early oral pain reliever, salicylic acid, was determined to cause stomach...
2 grams of salicylic acid mixed with 5ml of acetic anhydride. Final aspirin product is 2.17...
2 grams of salicylic acid mixed with 5ml of acetic anhydride.
Final aspirin product is 2.17 grams.
2.3. Calculate the theoretical yield in mass (g) of final aspirin product. Show the details in the calculation
1) Which reactant, salicylic acid or acetic anhydride, is in excess? Show your work. 2) If you we...
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
Please help woth mechanisms and answers for these!
5. Shown below is the mechanism presented for the formation of biasplatin in reference 1 from the Experiment document. The amounts used of each reactant are shown. Either draw or describe a better alternative to this mechanism. (Note that the first step represents two steps combined and the proton loss is not even shown; fixing these is not the desired improvement.) 0.15 mmol 1.1 mmol 4. The acetylation of salicylic acid may...
H3PO4 OH + OH OH salicylic acid acetic anhydride acetic acid acetylsalicylic acid (aspirin) 1. Why is it better to perform acetylation with acetic anhydride rather than using a Fischer esterification with acetic acid? 2. Draw a complete arrow-pushing mechanism for the reaction. 3. When an old sample of aspirin is left in moist conditions, it will begin to smell like vinegar. Draw a reaction scheme and briefly explain what happened.
1. Mass of salicylic acid (g) 2.0089 5.10ml & 2. Volume of acetic anhydride (mL) Limiting reactant is (circle one): Salicylic Acid or Acetic Anhydride Calculation for Limiting Reactant: 3. Theoretical yield of aspirin (9) Calculation for Theoretical Yield of aspirin: 4. Mass of filter paper 0.3369 N 5. Mass of filter paper + aspirin 2.471g 6. Experimental Yield of aspirin (g) 7. Percent Yield Synthesis of Aspirin An early oral pain reliever, salicylic acid, was determined to cause stomach...
2 grams of salicylic acid mixed with 5ml of acetic anhydride.
Final aspirin product is 2.17 grams.
2.3. Calculate the theoretical yield in mass (g) of final aspirin product. Show the details in the calculation
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
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