a) Draw all of of the possible ya I b) Highlight the Explain what KO¹ Bu LDA major makes products for the product in product a the reactions below. reactions major in above. a reaction.

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Chapter1: Chemical Foundations
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**Question 4:**

a) Draw all of the possible products for the reactions below.
- **Reaction 1:** A complex organic molecule with an iodine atom is reacted with potassium tert-butoxide (\( \text{KOtBu} \)).
- **Reaction 2:** A cyclohexane derivative with an iodine atom is reacted with lithium diisopropylamide (LDA).

b) Highlight the major product in the reactions above. Explain what makes a product major in a reaction.

**Explanation of Diagrams**:

- **Diagram 1:** The first structure appears to be a linear hydrocarbon chain with an iodine substituent. The presence of wavy lines suggests stereochemistry, indicating that an elimination or substitution reaction might be possible.
- **Diagram 2:** The second structure is a cyclohexane ring with two methyl groups and an iodine substituent, suggesting regioselectivity and stereoselectivity factors may play a role in the product outcomes when reacted with bases such as LDA.

**Additional Concepts**:
- **Regioselectivity and stereoselectivity:** These factors determine major products in reactions based on stability and reaction conditions.
- **E2/SN2 Reactions:** Common mechanisms when using strong bases like KOtBu and LDA, where elimination or substitution can occur.
Transcribed Image Text:**Question 4:** a) Draw all of the possible products for the reactions below. - **Reaction 1:** A complex organic molecule with an iodine atom is reacted with potassium tert-butoxide (\( \text{KOtBu} \)). - **Reaction 2:** A cyclohexane derivative with an iodine atom is reacted with lithium diisopropylamide (LDA). b) Highlight the major product in the reactions above. Explain what makes a product major in a reaction. **Explanation of Diagrams**: - **Diagram 1:** The first structure appears to be a linear hydrocarbon chain with an iodine substituent. The presence of wavy lines suggests stereochemistry, indicating that an elimination or substitution reaction might be possible. - **Diagram 2:** The second structure is a cyclohexane ring with two methyl groups and an iodine substituent, suggesting regioselectivity and stereoselectivity factors may play a role in the product outcomes when reacted with bases such as LDA. **Additional Concepts**: - **Regioselectivity and stereoselectivity:** These factors determine major products in reactions based on stability and reaction conditions. - **E2/SN2 Reactions:** Common mechanisms when using strong bases like KOtBu and LDA, where elimination or substitution can occur.
Expert Solution
Step 1: Elimination reactions

The reaction where there is an abstraction of a proton by a strong base from the carbon which is adjacent to the C-X bond in an alkyl halide to form an alkene is known as an elimination reaction. 

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