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CH2 P:lute HBr CH Brz H2O CH „CH, ) BHz THE

CH2 P:lute HBr CH Brz H2O CH „CH, ) BHz THE

Chemistry
Chemistry
10th Edition
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
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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Provide the Major product for the following addition reactions

The image shows three chemical reactions involving alkenes: 1. **Top Reaction:** - **Reactant:** A cyclohexene with a methyl group on the double bond. - **Reagent:** Dilute HBr (hydrobromic acid). - **Purpose:** This reaction likely indicates the electrophilic addition of HBr to the alkene. 2. **Middle Reaction:** - **Reactant:** An alkene with a three-carbon chain and a double bond between the second and third carbon. - **Reagents:** \( \text{Br}_2 \) (bromine) and \( \text{H}_2\text{O} \) (water). - **Purpose:** This is a halohydrin formation reaction, where bromine and hydroxide add across the double bond. 3. **Bottom Reaction:** - **Reactant:** Cyclohexene. - **Reagents:** - First step: \( \text{BH}_3 \) (borane) in tetrahydrofuran (THF). - Second step: \( \text{H}_2\text{O}_2 \) (hydrogen peroxide) and \( \text{NaOH} \). - **Purpose:** This is a hydroboration-oxidation reaction, converting the alkene to an alcohol with anti-Markovnikov selectivity. Each reaction illustrates a different method for adding groups across the double bonds of alkenes, with specific reagents used to achieve various outcomes in organic synthesis.
Transcribed Image Text:The image shows three chemical reactions involving alkenes: 1. **Top Reaction:** - **Reactant:** A cyclohexene with a methyl group on the double bond. - **Reagent:** Dilute HBr (hydrobromic acid). - **Purpose:** This reaction likely indicates the electrophilic addition of HBr to the alkene. 2. **Middle Reaction:** - **Reactant:** An alkene with a three-carbon chain and a double bond between the second and third carbon. - **Reagents:** \( \text{Br}_2 \) (bromine) and \( \text{H}_2\text{O} \) (water). - **Purpose:** This is a halohydrin formation reaction, where bromine and hydroxide add across the double bond. 3. **Bottom Reaction:** - **Reactant:** Cyclohexene. - **Reagents:** - First step: \( \text{BH}_3 \) (borane) in tetrahydrofuran (THF). - Second step: \( \text{H}_2\text{O}_2 \) (hydrogen peroxide) and \( \text{NaOH} \). - **Purpose:** This is a hydroboration-oxidation reaction, converting the alkene to an alcohol with anti-Markovnikov selectivity. Each reaction illustrates a different method for adding groups across the double bonds of alkenes, with specific reagents used to achieve various outcomes in organic synthesis.
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