5. You run the following reaction in lab and take a 'H NMR spectrum of the product. Determine the structure of the product. Did an SN1 or E1 reaction occur?
Catalysis and Enzymatic Reactions
Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.
Lock And Key Model
The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.
![**Transcription for Educational Website:**
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### Experimental Analysis of a Chemical Reaction Using 1H NMR Spectroscopy
**Problem Statement:**
You run the following reaction in the lab and take a \( ^1H \) NMR spectrum of the product. Determine the structure of the product. Did an \( S_N1 \) or \( E_1 \) reaction occur?
**Reaction:**
\[ \text{Reactant:} \, \text{A benzene ring attached to a secondary alcohol} \]
Reagents:
- \( \text{H}_2\text{SO}_4 \)
- \( \text{CH}_3\text{OH} \)
**NMR Spectrum Analysis:**
- **Chemical Shifts (in ppm):**
- **Around 7-8 ppm:** A set of multiple peaks representing the protons on the aromatic benzene ring, typically downfield due to the electronic environment.
- **Around 3-4 ppm:** A single peak likely indicating the presence of a methoxyl (-OCH3) group or similar electron-withdrawing group environment.
- **Around 1-2 ppm:** Multiple peaks suggesting protons from methyl (CH3-) or methylene (CH2-) groups in an alkyl chain or nearby structures.
**Graphical Interpretation:**
The spectrum displays several distinct regions:
1. **Aromatic Region (7-8 ppm):** Corresponds to the aromatic protons, confirming the presence of a benzene ring in the product.
2. **Methoxy Region (3-4 ppm):** Likely confirms a methoxy group in the structure, suggesting that a methyl ether formation may have occurred through an \( S_N1 \) reaction.
3. **Aliphatic Region (1-2 ppm):** Indicates protons from methyl or methylene groups, further supporting the structure of the reaction product.
**Conclusion:**
Based on the \( ^1H \) NMR spectrum, the reaction likely proceeds via an \( S_N1 \) mechanism, resulting in the substitution product where the hydroxyl group has been replaced by an ether linkage due to the presence of methanol. This aligns with the characteristic peaks observed for aromatic protons, the methoxy group, and aliphatic protons.
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This transcription provides a clear framework for understanding the reaction and interpreting the NMR data to deduce the product structure.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F705433e3-4c82-46ae-9d96-d7e15bc3e592%2F51234a57-7f66-49f4-8c32-ea611485f1dc%2Fd03qttv_processed.png&w=3840&q=75)

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