Predict the major product(s) of the following reactions For reactions that are not stereospecific, you should select all correct stereoisomers. oh 0 OH سیله ОН H.C-CH. Products

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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**Question:**

Predict the major product(s) of the following reactions. For reactions that are not stereospecific, you should select all correct stereoisomers.

**Reaction:**

- Reactants:
  - An alkyl halide with the formula: \(\text{Cl} - \text{CH}_2 - \text{CH}_2 - \text{CH}_2 - \text{CH}_3\).
  - A molecule with the structure: \((\text{C}_2\text{H}_5)_2\text{N}\).

**Products:**

Five possible structures are shown as potential products:

1. A structure with an ethyl group attached to a nitrogen atom, along with an OH group connected as well.
2. An original alkyl structure with the chlorine still attached.
3. A cyclohexane structure with an OH group and a nitrogen attachment.
4. A similar nitrogen and OH group arrangement as the first structure.
5. The original alkyl structure without the chlorine.

Each structure has a checkbox next to it for selection to indicate the predicted major product(s).

**Explanation:**

This problem requires knowledge of organic substitution and elimination reactions. Students must consider reaction conditions that could lead to either an SN2, E2, or other mechanistic pathway, selecting the structures indicative of nucleophilic substitution or elimination pathways.
Transcribed Image Text:**Question:** Predict the major product(s) of the following reactions. For reactions that are not stereospecific, you should select all correct stereoisomers. **Reaction:** - Reactants: - An alkyl halide with the formula: \(\text{Cl} - \text{CH}_2 - \text{CH}_2 - \text{CH}_2 - \text{CH}_3\). - A molecule with the structure: \((\text{C}_2\text{H}_5)_2\text{N}\). **Products:** Five possible structures are shown as potential products: 1. A structure with an ethyl group attached to a nitrogen atom, along with an OH group connected as well. 2. An original alkyl structure with the chlorine still attached. 3. A cyclohexane structure with an OH group and a nitrogen attachment. 4. A similar nitrogen and OH group arrangement as the first structure. 5. The original alkyl structure without the chlorine. Each structure has a checkbox next to it for selection to indicate the predicted major product(s). **Explanation:** This problem requires knowledge of organic substitution and elimination reactions. Students must consider reaction conditions that could lead to either an SN2, E2, or other mechanistic pathway, selecting the structures indicative of nucleophilic substitution or elimination pathways.
### Transcription of Chemical Reaction Question for Educational Purposes

**Question:**

b) 

**Reactants:**
- Propanone (acetone) structure is shown.

**Reagents:**
1. KCN, THF
2. CH₃COOH

An arrow points towards a column labeled "Products."

**Possible Products:**

Below the arrow, a series of potential product structures are depicted with checkboxes beside them:

1. **Structure 1:** 
   - A carbon chain with three carbon atoms.
   - A carbonyl (C=O) group at the second carbon.
   - A cyano group (-CN) attached to the third carbon.

2. **Structure 2:**
   - A carbon chain with three carbon atoms.
   - A carbonyl (C=O) group at the second carbon.
   - A hydroxyl group (OH) and a cyano group (CN) on the third carbon.

3. **Structure 3:**
   - A carbon chain with three carbon atoms.
   - A cyano group (NC) and a hydroxyl group (OH) attached to the first carbon.

4. **Structure 4:**
   - A carbon chain with three carbon atoms.
   - A hydroxyl group (OH) and a cyano group (CN) attached to the second carbon.

5. **Structure 5:**
   - A carbon chain with three carbon atoms.
   - A cyano group (NC) and a hydroxyl group (OH) attached to the first carbon in reverse order to Structure 3.

**Explanation of the Reaction:**

- The reaction starts with propanone, which undergoes cyanohydrin formation in the presence of potassium cyanide (KCN) and tetrahydrofuran (THF) as a solvent. 
- The process involves the addition of a CN group to the carbonyl carbon.
- Acidification with acetic acid (CH₃COOH) follows, potentially leading to various cyanohydrin products.

This exercise helps students understand the mechanism of cyanohydrin formation and product identification.
Transcribed Image Text:### Transcription of Chemical Reaction Question for Educational Purposes **Question:** b) **Reactants:** - Propanone (acetone) structure is shown. **Reagents:** 1. KCN, THF 2. CH₃COOH An arrow points towards a column labeled "Products." **Possible Products:** Below the arrow, a series of potential product structures are depicted with checkboxes beside them: 1. **Structure 1:** - A carbon chain with three carbon atoms. - A carbonyl (C=O) group at the second carbon. - A cyano group (-CN) attached to the third carbon. 2. **Structure 2:** - A carbon chain with three carbon atoms. - A carbonyl (C=O) group at the second carbon. - A hydroxyl group (OH) and a cyano group (CN) on the third carbon. 3. **Structure 3:** - A carbon chain with three carbon atoms. - A cyano group (NC) and a hydroxyl group (OH) attached to the first carbon. 4. **Structure 4:** - A carbon chain with three carbon atoms. - A hydroxyl group (OH) and a cyano group (CN) attached to the second carbon. 5. **Structure 5:** - A carbon chain with three carbon atoms. - A cyano group (NC) and a hydroxyl group (OH) attached to the first carbon in reverse order to Structure 3. **Explanation of the Reaction:** - The reaction starts with propanone, which undergoes cyanohydrin formation in the presence of potassium cyanide (KCN) and tetrahydrofuran (THF) as a solvent. - The process involves the addition of a CN group to the carbonyl carbon. - Acidification with acetic acid (CH₃COOH) follows, potentially leading to various cyanohydrin products. This exercise helps students understand the mechanism of cyanohydrin formation and product identification.
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