1. NBS, acyl peroxide 2. t-BUOK, heat

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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### Transcription for Educational Website

**Chemistry Reaction Sequence:**

**Starting Material:**

- The structure depicted is an alkene with a methyl group substituent.

**Reagents and Conditions:**

1. **NBS (N-Bromosuccinimide), Acyl Peroxide:** 
   - Commonly used for allylic bromination. Acyl peroxide serves as a radical initiator.
   
2. **t-BuOK (Potassium tert-butoxide), Heat:** 
   - A strong base often used for elimination reactions, promoting the formation of alkenes.

**General Explanation:**

This chemical reaction involves two main steps. In the first step, the alkene undergoes allylic bromination using NBS in the presence of an acyl peroxide, which initiates a radical reaction. In the second step, the introduction of t-BuOK and heat facilitates an elimination reaction, potentially altering the alkene structure further.

This sequence often results in conversions useful in synthetic organic chemistry, enabling transformations that lead to structurally complex molecules.
Transcribed Image Text:### Transcription for Educational Website **Chemistry Reaction Sequence:** **Starting Material:** - The structure depicted is an alkene with a methyl group substituent. **Reagents and Conditions:** 1. **NBS (N-Bromosuccinimide), Acyl Peroxide:** - Commonly used for allylic bromination. Acyl peroxide serves as a radical initiator. 2. **t-BuOK (Potassium tert-butoxide), Heat:** - A strong base often used for elimination reactions, promoting the formation of alkenes. **General Explanation:** This chemical reaction involves two main steps. In the first step, the alkene undergoes allylic bromination using NBS in the presence of an acyl peroxide, which initiates a radical reaction. In the second step, the introduction of t-BuOK and heat facilitates an elimination reaction, potentially altering the alkene structure further. This sequence often results in conversions useful in synthetic organic chemistry, enabling transformations that lead to structurally complex molecules.
The image shows an organic chemistry reaction sequence.

**Reaction Steps:**

1. **Reagents:**
   - NBS (N-Bromosuccinimide) and acyl peroxide are used in the first step.

2. **Reaction Conditions:**
   - The second step involves t-BuOK (tert-butoxide) and heat.

**Structures:**

- **Starting Material:**
  - An alkene with a methyl group attached to a carbon-carbon double bond.

- **Product:**
  - A structure featuring a bromine atom added to the double bond, with a notation indicating a methyl group (CH₃).

**Explanation:**

- Initially, NBS in the presence of an acyl peroxide facilitates the allylic bromination of the alkene.
- The second stage involves the use of t-BuOK and heat, likely promoting an elimination reaction leading to the formation of a more substituted double bond, indicative of a potential rearrangement or elimination step.

This reaction is a common example of allylic bromination followed by an elimination to achieve a more stable alkene product.
Transcribed Image Text:The image shows an organic chemistry reaction sequence. **Reaction Steps:** 1. **Reagents:** - NBS (N-Bromosuccinimide) and acyl peroxide are used in the first step. 2. **Reaction Conditions:** - The second step involves t-BuOK (tert-butoxide) and heat. **Structures:** - **Starting Material:** - An alkene with a methyl group attached to a carbon-carbon double bond. - **Product:** - A structure featuring a bromine atom added to the double bond, with a notation indicating a methyl group (CH₃). **Explanation:** - Initially, NBS in the presence of an acyl peroxide facilitates the allylic bromination of the alkene. - The second stage involves the use of t-BuOK and heat, likely promoting an elimination reaction leading to the formation of a more substituted double bond, indicative of a potential rearrangement or elimination step. This reaction is a common example of allylic bromination followed by an elimination to achieve a more stable alkene product.
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