Predict the major product for this reaction. Ignore inorganic byproducts. H3O+ Select to Draw

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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### Organic Chemistry Problem - Reaction Products

**Problem 5 of 10**

#### Problem Statement:
Draw the major product of this reaction. Ignore inorganic byproducts.

#### Reaction Detail:
- **Reactant Structure:**
![Reactant](https://us.static.foodforfitness.co.uk/img/legal/legal_PNG23546.png)
  The provided structure is an organic molecule featuring a 4-carbon chain with branching and a triple bond. The structure can be labeled for detail as follows:
  - Two methyl groups are attached to the first carbon of the 4-carbon straight chain (2,3-dimethyl-1-butyne).

- **Reagent:**
  - \( Br_2 \) (1 equivalent)
  - The reagent used in this reaction is bromine.

#### Required:
- **Product:**
  Draw the major product formed after the reaction with bromine, \( Br_2 \), and ignore any inorganic byproducts. 

### Explanation:
1. **Step-by-step process:**
   - Identify the reaction type: The reaction of an alkyne with bromine.
   - Given that 1 equivalent of \( Br_2 \) is used, the reaction will likely involve the addition of bromine across the triple bond.

2. **Prediction of Major Product:**
   - The addition of bromine (Br–Br) across the triple bond will proceed via an anti-addition mechanism, which will break the triple bond into a double bond and add two bromine atoms to the carbon atoms that were involved in the triple bond.

### Expected Major Product:
The drawn structure should show the product after the addition of one equivalent of bromine.

---

Ensure understanding in drawing and interpreting organic structures and applying knowledge of common chemical reactions, such as the bromination of alkynes. For visualization and detailed reaction mechanism, refer to section on Halogen Addition Reactions in organic chemistry resources.

#### Note:
For actual drawing practice, use chemical drawing tools or refer to detail sections in textbooks for confirmations and self-check answers.
Transcribed Image Text:### Organic Chemistry Problem - Reaction Products **Problem 5 of 10** #### Problem Statement: Draw the major product of this reaction. Ignore inorganic byproducts. #### Reaction Detail: - **Reactant Structure:** ![Reactant](https://us.static.foodforfitness.co.uk/img/legal/legal_PNG23546.png) The provided structure is an organic molecule featuring a 4-carbon chain with branching and a triple bond. The structure can be labeled for detail as follows: - Two methyl groups are attached to the first carbon of the 4-carbon straight chain (2,3-dimethyl-1-butyne). - **Reagent:** - \( Br_2 \) (1 equivalent) - The reagent used in this reaction is bromine. #### Required: - **Product:** Draw the major product formed after the reaction with bromine, \( Br_2 \), and ignore any inorganic byproducts. ### Explanation: 1. **Step-by-step process:** - Identify the reaction type: The reaction of an alkyne with bromine. - Given that 1 equivalent of \( Br_2 \) is used, the reaction will likely involve the addition of bromine across the triple bond. 2. **Prediction of Major Product:** - The addition of bromine (Br–Br) across the triple bond will proceed via an anti-addition mechanism, which will break the triple bond into a double bond and add two bromine atoms to the carbon atoms that were involved in the triple bond. ### Expected Major Product: The drawn structure should show the product after the addition of one equivalent of bromine. --- Ensure understanding in drawing and interpreting organic structures and applying knowledge of common chemical reactions, such as the bromination of alkynes. For visualization and detailed reaction mechanism, refer to section on Halogen Addition Reactions in organic chemistry resources. #### Note: For actual drawing practice, use chemical drawing tools or refer to detail sections in textbooks for confirmations and self-check answers.
### Problem 6 of 10

**Predict the major product for this reaction. Ignore inorganic byproducts.**

Below this prompt, the image displays a chemical reaction setup.

#### Reaction Scheme:
1. **Reactants:**
   - A structure consisting of two benzene rings connected by a triple bond (indicated by a triple line) between a carbon on each benzene ring. This structure is typically indicative of a diphenylacetylene (Ph-C≡C-Ph).

2. **Reagent:**
   - H3O^+ (hydronium ion).

3. **Product:**
   - A box labeled "Select to Draw" indicates you should draw the major product.

#### Explanation:
The task is to predict the major product formed when the provided diphenylacetylene reacts with hydronium ions (H3O^+).

**Instructions:**
1. Identify the reactants and reagents.
2. Determine the reaction mechanism.
3. Consider regioselectivity and stereoselectivity.
4. Draw the major organic product.

#### Note:
Ignore any inorganic byproducts that might form during the reaction.

**Interactive Element:**
- Use the "Select to Draw" area to illustrate the major product derived from the starting materials and reaction conditions given.

*Engage with the problem by predicting the product. This step will help reinforce your understanding of organic reaction mechanisms and product formations.*
Transcribed Image Text:### Problem 6 of 10 **Predict the major product for this reaction. Ignore inorganic byproducts.** Below this prompt, the image displays a chemical reaction setup. #### Reaction Scheme: 1. **Reactants:** - A structure consisting of two benzene rings connected by a triple bond (indicated by a triple line) between a carbon on each benzene ring. This structure is typically indicative of a diphenylacetylene (Ph-C≡C-Ph). 2. **Reagent:** - H3O^+ (hydronium ion). 3. **Product:** - A box labeled "Select to Draw" indicates you should draw the major product. #### Explanation: The task is to predict the major product formed when the provided diphenylacetylene reacts with hydronium ions (H3O^+). **Instructions:** 1. Identify the reactants and reagents. 2. Determine the reaction mechanism. 3. Consider regioselectivity and stereoselectivity. 4. Draw the major organic product. #### Note: Ignore any inorganic byproducts that might form during the reaction. **Interactive Element:** - Use the "Select to Draw" area to illustrate the major product derived from the starting materials and reaction conditions given. *Engage with the problem by predicting the product. This step will help reinforce your understanding of organic reaction mechanisms and product formations.*
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