Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic steps. Be sure to account for all bond-breaking and bond-making steps. Drawing Arrows CH3CH₂OK, CH3CH₂2OH heat H KO H H Undo Reset Done FO: H Drag To Pan

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**Title:** Understanding Electron Flow in Chemical Reactions

**Curved Arrows in Mechanistic Steps**

**Instruction:**
Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic steps.

Be sure to account for all bond-breaking and bond-making steps.

**Reaction Details:**
- **Reagents:** CH₃CH₂OK, CH₃CH₂OH
- **Conditions:** Heat

**Diagram Explanation:**

The image shows a chemical diagram with a series of structural formulas:

1. **Left Structure:**
   - An ethoxide ion (CH₃CH₂O⁻) with a lone pair of electrons on the oxygen atom.

2. **Middle Structure:**
   - A secondary alkyl halide with a bromine atom attached, depicted using its structure:
     - Central carbon atoms bonded with Hydrogen (H), a Bromo group (Br), and other carbon chains.
   - Potassium ion (K⁺) is shown nearby.

3. **Right Structure:**
   - An ethanol molecule (CH₃CH₂OH) with the oxygen atom connected to hydrogen.

**Instructions for Drawing:**
To complete the mechanistic steps, identify and draw the arrows indicating electron movement. These arrows should show:
- How electrons shift from the nucleophile (ethoxide ion) to the electrophilic site (carbon attached to bromine) for potential substitution or elimination.
- The movement of electrons in bond-breaking (e.g., breaking C-Br bond) and bond-forming (e.g., forming a new C-O bond) processes.

Ensure that all steps reflect the proper electron flow in the reaction's transformation.
Transcribed Image Text:**Title:** Understanding Electron Flow in Chemical Reactions **Curved Arrows in Mechanistic Steps** **Instruction:** Curved arrows are used to illustrate the flow of electrons. Using the provided starting and product structures, draw the curved electron-pushing arrows for the following reaction or mechanistic steps. Be sure to account for all bond-breaking and bond-making steps. **Reaction Details:** - **Reagents:** CH₃CH₂OK, CH₃CH₂OH - **Conditions:** Heat **Diagram Explanation:** The image shows a chemical diagram with a series of structural formulas: 1. **Left Structure:** - An ethoxide ion (CH₃CH₂O⁻) with a lone pair of electrons on the oxygen atom. 2. **Middle Structure:** - A secondary alkyl halide with a bromine atom attached, depicted using its structure: - Central carbon atoms bonded with Hydrogen (H), a Bromo group (Br), and other carbon chains. - Potassium ion (K⁺) is shown nearby. 3. **Right Structure:** - An ethanol molecule (CH₃CH₂OH) with the oxygen atom connected to hydrogen. **Instructions for Drawing:** To complete the mechanistic steps, identify and draw the arrows indicating electron movement. These arrows should show: - How electrons shift from the nucleophile (ethoxide ion) to the electrophilic site (carbon attached to bromine) for potential substitution or elimination. - The movement of electrons in bond-breaking (e.g., breaking C-Br bond) and bond-forming (e.g., forming a new C-O bond) processes. Ensure that all steps reflect the proper electron flow in the reaction's transformation.
The image depicts a chemical reaction involving the conversion of a bromide compound using a potassium ethoxide (CH₃CH₂OK) and ethanol (CH₃CH₂OH) solution under heat. Here is a detailed breakdown of the reaction:

### Chemical Reaction:

1. **Reaction Conditions and Reagents:**
   - **Reagents:** Potassium ethoxide (CH₃CH₂OK) and ethanol (CH₃CH₂OH)
   - **Conditions:** Heat is applied.

2. **Reactants:**
   - A brominated compound with a structure shown on the right side:
     - It is a secondary alkyl bromide.

3. **Products:**
   - An alkene structure formed by the elimination of HBr.
   - Side products may include the alcohol and/or leftover potassium.

### Diagram Explanation:

- **Left Side Diagram:**
  - **Ethoxide Ion (CH₃CH₂O⁻):** Shown as an ethyl group (two carbon chain) connected to an oxygen with a negative charge, and potassium as a counterion (K⁺).
  - **Starting Bromide Compound:** Displaying a secondary alkyl bromide, with the bromine atom carrying a partial negative charge (δ⁻).

- **Right Side Diagram:**
  - **Formed Alkene:** The double bond is formed as a result of the elimination.
  - **Bromide Ion (Br⁻) and Ethanol:** As side products.

The reaction is an example of an E2 elimination, where the ethoxide ion acts as a strong base, removing a hydrogen atom adjacent to the bromine-bearing carbon, leading to the formation of an alkene and the liberation of a bromide ion.
Transcribed Image Text:The image depicts a chemical reaction involving the conversion of a bromide compound using a potassium ethoxide (CH₃CH₂OK) and ethanol (CH₃CH₂OH) solution under heat. Here is a detailed breakdown of the reaction: ### Chemical Reaction: 1. **Reaction Conditions and Reagents:** - **Reagents:** Potassium ethoxide (CH₃CH₂OK) and ethanol (CH₃CH₂OH) - **Conditions:** Heat is applied. 2. **Reactants:** - A brominated compound with a structure shown on the right side: - It is a secondary alkyl bromide. 3. **Products:** - An alkene structure formed by the elimination of HBr. - Side products may include the alcohol and/or leftover potassium. ### Diagram Explanation: - **Left Side Diagram:** - **Ethoxide Ion (CH₃CH₂O⁻):** Shown as an ethyl group (two carbon chain) connected to an oxygen with a negative charge, and potassium as a counterion (K⁺). - **Starting Bromide Compound:** Displaying a secondary alkyl bromide, with the bromine atom carrying a partial negative charge (δ⁻). - **Right Side Diagram:** - **Formed Alkene:** The double bond is formed as a result of the elimination. - **Bromide Ion (Br⁻) and Ethanol:** As side products. The reaction is an example of an E2 elimination, where the ethoxide ion acts as a strong base, removing a hydrogen atom adjacent to the bromine-bearing carbon, leading to the formation of an alkene and the liberation of a bromide ion.
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