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Complete the mechanisms for the following reactions. Ď A) B) Br Brz MeQH LDA Br Br

Complete the mechanisms for the following reactions. Ď A) B) Br Brz MeQH LDA Br Br

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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## Complete the Mechanisms for the Following Reactions: ### Reaction A) **Reactants:** - A benzene ring with a single methyl group attached (toluene) - Bromine (Br₂) - Methanol (MeOH) **Products:** - A benzene ring with a methyl group and a bromomethyl group (the methyl group is brominated in the presence of methanol) **Explanation:** In this reaction, a methyl group attached to a benzene ring is brominated in the presence of bromine (Br₂) and methanol (MeOH). The resulting product is a benzene ring with a -COCH₂Br group attached to the methyl group. ### Reaction B) **Reactants:** - A molecule with a bromine atom attached to a secondary carbon (Brominated alkane) - LDA (Lithium Diisopropylamide) **Products:** - A molecule with a double bond between two carbon atoms (Alkene) **Explanation:** In this reaction, the bromine atom is removed by LDA, a strong base, leading to the formation of a double bond between the two carbon atoms. This results in an alkene product. ### Reaction C) **Reactants:** - An alkyne - Bromine (Br₂) **Products:** - A molecule with two bromine atoms added in an anti-configuration across the triple bond **Explanation:** This reaction showcases the addition of bromine (Br₂) to an alkyne. The reactant with a triple bond undergoes a halogenation reaction, where two bromine atoms add across the previously triple bond, resulting in an alkene with each carbon of the former triple bond bonded to a bromine atom in an anti-configuration. This page offers a detailed breakdown of organic reaction mechanisms, illustrating the step-by-step transformations of specific reactants into their corresponding products.
Transcribed Image Text:## Complete the Mechanisms for the Following Reactions: ### Reaction A) **Reactants:** - A benzene ring with a single methyl group attached (toluene) - Bromine (Br₂) - Methanol (MeOH) **Products:** - A benzene ring with a methyl group and a bromomethyl group (the methyl group is brominated in the presence of methanol) **Explanation:** In this reaction, a methyl group attached to a benzene ring is brominated in the presence of bromine (Br₂) and methanol (MeOH). The resulting product is a benzene ring with a -COCH₂Br group attached to the methyl group. ### Reaction B) **Reactants:** - A molecule with a bromine atom attached to a secondary carbon (Brominated alkane) - LDA (Lithium Diisopropylamide) **Products:** - A molecule with a double bond between two carbon atoms (Alkene) **Explanation:** In this reaction, the bromine atom is removed by LDA, a strong base, leading to the formation of a double bond between the two carbon atoms. This results in an alkene product. ### Reaction C) **Reactants:** - An alkyne - Bromine (Br₂) **Products:** - A molecule with two bromine atoms added in an anti-configuration across the triple bond **Explanation:** This reaction showcases the addition of bromine (Br₂) to an alkyne. The reactant with a triple bond undergoes a halogenation reaction, where two bromine atoms add across the previously triple bond, resulting in an alkene with each carbon of the former triple bond bonded to a bromine atom in an anti-configuration. This page offers a detailed breakdown of organic reaction mechanisms, illustrating the step-by-step transformations of specific reactants into their corresponding products.
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