Stork enamine reactions - Write the mechanism to predict the product of reaction of acetone wi catalyst), following by warming with benzoyl chloride (PhCOCI) and the

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**Stork Enamine Reactions**

**Problem Statement:**

Write the mechanism to predict the product of the reaction of acetone with diethylamine (using a Lewis acid catalyst), followed by warming with benzoyl chloride (PhCOCl), and then water.

**Introduction:**

The Stork enamine reaction involves the formation of an enamine from a ketone or an aldehyde and a secondary amine. This reaction is important in organic synthesis for forming carbon-carbon bonds.

**Mechanism Steps:**

1. **Enamine Formation:**
   - Acetone reacts with diethylamine in the presence of a Lewis acid catalyst to form an enamine. This step involves the removal of water and formation of a C=C-N bond.

2. **Alkylation with Benzoyl Chloride:**
   - The enamine undergoes alkylation with benzoyl chloride. The nucleophilic enamine attacks the electrophilic carbonyl carbon of benzoyl chloride, leading to the formation of an intermediate.

3. **Hydrolysis:**
   - The final step involves hydrolysis of the intermediate to regenerate the carbonyl group and form the final product. Water is added to revert the enamine to the original carbonyl form, yielding the desired product.

This stepwise process highlights the utility of Stork enamine reactions in complex organic syntheses, particularly in forming carbon-carbon bonds.
Transcribed Image Text:**Stork Enamine Reactions** **Problem Statement:** Write the mechanism to predict the product of the reaction of acetone with diethylamine (using a Lewis acid catalyst), followed by warming with benzoyl chloride (PhCOCl), and then water. **Introduction:** The Stork enamine reaction involves the formation of an enamine from a ketone or an aldehyde and a secondary amine. This reaction is important in organic synthesis for forming carbon-carbon bonds. **Mechanism Steps:** 1. **Enamine Formation:** - Acetone reacts with diethylamine in the presence of a Lewis acid catalyst to form an enamine. This step involves the removal of water and formation of a C=C-N bond. 2. **Alkylation with Benzoyl Chloride:** - The enamine undergoes alkylation with benzoyl chloride. The nucleophilic enamine attacks the electrophilic carbonyl carbon of benzoyl chloride, leading to the formation of an intermediate. 3. **Hydrolysis:** - The final step involves hydrolysis of the intermediate to regenerate the carbonyl group and form the final product. Water is added to revert the enamine to the original carbonyl form, yielding the desired product. This stepwise process highlights the utility of Stork enamine reactions in complex organic syntheses, particularly in forming carbon-carbon bonds.
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