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Exercise 2: The assignment consists of 2 independent sub-tasks, 2.1 and 2.2.

Exercise 2.1:

The painkiller ibuprofen can be prepared through the following reactions.

List the necessary reagents 1,2,3,4 and 5.

Write down structural formulas for D and ibuprofen.

The product produced through the reactions shown is a racemic mixture.

Explain this.

Exercise2.2:

Carbonic acid, H2CO3 has the structural formula:

The following compound is a carbonic derivative.

List the functional groups in the above connection.

The compound is brominated in an electrophilic atomic substitution.

State the reasons for the ring bromination.

Write down resonance formulas that show where in the ring the bromination occurs.

Write down the structural formula for the products.

Exercise 3: The assignment consists of 2 independent sub-tasks, 3.1 and 3.2.

Exercise 3.1Write down the structural formulas for the isomeric compounds benzoyl chloride and p-chlorobenzaldehyde.

Describe the 1 H NMR spectrum of p-chlorobenzaldehyde by stating the number of signals. For each signal, indicate its chemical shift, its intensity and its fine structure.

State how the isomeric compounds can be distinguished by their 1 H NMR spectra.

Exercise 3.2

In the mass spectrum of compound P, the molecular peak, M + ', is found at m / z 69. P's IR spectrum exhibits characteristic absorptions at 2980, 2950, 2900 as well as at 2270 cm -1.

List the functional group that can be identified from the given IR data.

Write down the structural formula for P.

P is hydrolyzed. This makes Q.

Write down the structural formula for Q.





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Exercise 2: The assignment consists of 2 independent sub-tasks, 2.1 and 2.2. Exercise 2.1: The painkiller ibuprofen can be prepared through the following reactions. List the necessary reagents 1,2,3,4 and 5. Write down structural formulas for D and ibuprofen. The product produced through the reactions shown is a racemic mixture. Explain this. Exercise 2.2: Carbonic acid, H2CO3 has the structural formula: The following compound is a carbonic derivative. List the functional groups in the above connection. The compound is brominated in an electrophilic atomic substitution. State the reasons for the ring bromination. Write down resonance formulas that show where in the ring the bromination occurs. Write down the structural formula for the products. Exercise 3: The assignment consists of 2 independent sub-tasks, 3.1 and 3.2. Exercise 3.1Write down the structural formulas for the isomeric compounds benzoyl chloride and p-chlorobenzaldehyde. Describe the 1 H NMR spectrum of p-chlorobenzaldehyde by stating the number of signals. For each signal, indicate its chemical shift, its intensity and its fine structure. State how the isomeric compounds can be distinguished by their 1 H NMR spectra. Exercise 3.2 In the mass spectrum of compound P, the molecular peak, M + ', is found at m / z 69. P's IR spectrum exhibits characteristic absorptions at 2980, 2950, 2900 as well as at 2270 cm -1. List the functional group that can be identified from the given IR data. Write down the structural formula for P. P is hydrolyzed. This makes Q. Write down the structural formula for Q. ...
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