Give a complete curved arrow pushing mechanism for this reaction, and... 1) Add non-bonding electrons and C-H bonds to the line-angle structures as required. 2) Indicate the Lewis acid/Lewis base (LA, LB) at each step as appropriate, and whether they are also Brønsted acids/bases (LA/BA, LB,BB) 3) GIVE THE NUMBER OF STEPS IN YOUR MECHANISM To preview the image click here :0: H OMe 1- H-Al-H H Excess LiAlH4 :O: Li -H H :OMe

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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**Instructions for Curved Arrow Pushing Mechanism:**

To fully demonstrate the mechanism for this chemical reaction:

1. **Add Non-bonding Electrons and C-H Bonds:**
   Ensure all relevant line-angle structures include non-bonding electrons and C-H bonds.

2. **Identify Lewis Acids and Bases:**
   At each step, specify the Lewis acid (LA) and Lewis base (LB). Also, indicate if they function as Brønsted acids or bases (LA/BA, LB/BB).

3. **Number of Steps:**
   Provide the total number of steps in the mechanism.

**Chemical Reaction Scheme:**

- **Reactants:**  
  - The starting material features an ether group (OMe) and is indicated with a lone pair on the oxygen atom.
  - Excess lithium aluminum hydride (LiAlH₄) is shown, with the bond structures explicitly drawn, and Li⁺ separated.

- **Products:**  
  - The primary product depicted has an oxygen atom with a negative charge and an attached lithium cation (Li⁺), showing added hydrogen atoms (C-H) next to the carbon.
  - A secondary product is lithium methoxide, Li⁺ with an OMe group bearing a negative charge.

Ensure that the curved arrows correctly depict electron movement within these steps.
Transcribed Image Text:**Instructions for Curved Arrow Pushing Mechanism:** To fully demonstrate the mechanism for this chemical reaction: 1. **Add Non-bonding Electrons and C-H Bonds:** Ensure all relevant line-angle structures include non-bonding electrons and C-H bonds. 2. **Identify Lewis Acids and Bases:** At each step, specify the Lewis acid (LA) and Lewis base (LB). Also, indicate if they function as Brønsted acids or bases (LA/BA, LB/BB). 3. **Number of Steps:** Provide the total number of steps in the mechanism. **Chemical Reaction Scheme:** - **Reactants:** - The starting material features an ether group (OMe) and is indicated with a lone pair on the oxygen atom. - Excess lithium aluminum hydride (LiAlH₄) is shown, with the bond structures explicitly drawn, and Li⁺ separated. - **Products:** - The primary product depicted has an oxygen atom with a negative charge and an attached lithium cation (Li⁺), showing added hydrogen atoms (C-H) next to the carbon. - A secondary product is lithium methoxide, Li⁺ with an OMe group bearing a negative charge. Ensure that the curved arrows correctly depict electron movement within these steps.
Expert Solution
Step 1: Introduction to the reagents and acid-base concepts

A Lewis acid is a species that accepts electrons. It is positively charged or has vacant orbitals to accept electrons.

A Lewis base donates electrons. It is having negative charge or lone pair of electrons to donate.

A bronsted lowry acid donates protons while a bronsted lowry base accepts protons.

LiAlH4 is a very strong reducing agent, used to reduce almost all carbonyl derivatives. With ester it reacts to give corresponding alcohol, One equivalent of LiAlH4 can reduce two equivalents of ester. Aprotic solvents are required to carry out these reactions.

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