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With a vicinal dibromide, two successive dehydrohalogens strong base, removing a proton and bromide from neighbors can further react to lose another proton and bromide to yies functional group. In Part 1 of this experiment, we will use (5)-1,2-diphenyl- the alkene reactant in an electrophilic addition reaction wi What is the structure of the product you expect to obtai reactants in an achiral environment. What stereoisomer(s) In Part 2, we will use the product you obtained in Part eliminations, or double dehydrohalogenation. This procedu example of crystal growth. Pase-Sibere Part 1 ace acid Which stereoisome Safer Reagents In the context of synthesis, the principles of green chemis and should be chosen when possible. In this experiment bromine, which avoids some hazards associated with this form of bromine, Br, is a liquid with an appreciable vapo Oxidants are corrosive and need to be handled carefully and reducing agents. For example, metallic objects or toc electrons that an oxidant like bromine seeks. Oxidation (c weakness in a meta pipe; in larger scale pr or str

With a vicinal dibromide, two successive dehydrohalogens strong base, removing a proton and bromide from neighbors can further react to lose another proton and bromide to yies functional group. In Part 1 of this experiment, we will use (5)-1,2-diphenyl- the alkene reactant in an electrophilic addition reaction wi What is the structure of the product you expect to obtai reactants in an achiral environment. What stereoisomer(s) In Part 2, we will use the product you obtained in Part eliminations, or double dehydrohalogenation. This procedu example of crystal growth. Pase-Sibere Part 1 ace acid Which stereoisome Safer Reagents In the context of synthesis, the principles of green chemis and should be chosen when possible. In this experiment bromine, which avoids some hazards associated with this form of bromine, Br, is a liquid with an appreciable vapo Oxidants are corrosive and need to be handled carefully and reducing agents. For example, metallic objects or toc electrons that an oxidant like bromine seeks. Oxidation (c weakness in a meta pipe; in larger scale pr or str

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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With a vicinal dibromide, two successive dehydrohalogenation reactions can occur upon treatment with strong base, removing a proton and bromide from neighboring carbons to afford a bromoalkene. This then can further react to lose another proton and bromide to yield the carbon-carbon triple bond of the alkyne functional group. In Part 1 of this experiment, we will use (E)-1,2-diphenylethene, commonly known as trans-stilbene, as the alkene reactant in an electrophilic addition reaction with molecular elemental form of bromine, Br₂. What is the structure of the product you expect to obtain? Note that this reaction consists of achiral reactants in an achiral environment. What stereoisomer(s) will be present? In Part 2, we will use the product you obtained in Part 1 to produce an alkyne via two successive E2 eliminations, or double dehydrohalogenation. This procedure affords an opportunity to observe a beautiful example of crystal growth. bans-Sibene Part 1 Not Br acetic acid Which some Part 2 KOH, heat tiethylene glycol 0-0 Diphenylacetylene Safer Reagents In the context of synthesis, the principles of green chemistry dictate that safer reagents are advantageous, and should be chosen when possible. In this experiment, we will use a solid compound as a source of bromine, which avoids some hazards associated with this important reagent for synthesis. The elemental form of bromine, Br, is a liquid with an appreciable vapor pressure, while also being a powerful oxidant Oxidants are corrosive and need to be handled carefully and stored separately from organic compounds and reducing agents. For example, metallic objects or tools can often be oxidized; they could provide the electrons that an oxidant like bromine seeks. Oxidation (corrosion) can cause failure of metal components or structural weakness in a metal pipe; in larger scale production settings this could cause an accidental
Transcribed Image Text:With a vicinal dibromide, two successive dehydrohalogenation reactions can occur upon treatment with strong base, removing a proton and bromide from neighboring carbons to afford a bromoalkene. This then can further react to lose another proton and bromide to yield the carbon-carbon triple bond of the alkyne functional group. In Part 1 of this experiment, we will use (E)-1,2-diphenylethene, commonly known as trans-stilbene, as the alkene reactant in an electrophilic addition reaction with molecular elemental form of bromine, Br₂. What is the structure of the product you expect to obtain? Note that this reaction consists of achiral reactants in an achiral environment. What stereoisomer(s) will be present? In Part 2, we will use the product you obtained in Part 1 to produce an alkyne via two successive E2 eliminations, or double dehydrohalogenation. This procedure affords an opportunity to observe a beautiful example of crystal growth. bans-Sibene Part 1 Not Br acetic acid Which some Part 2 KOH, heat tiethylene glycol 0-0 Diphenylacetylene Safer Reagents In the context of synthesis, the principles of green chemistry dictate that safer reagents are advantageous, and should be chosen when possible. In this experiment, we will use a solid compound as a source of bromine, which avoids some hazards associated with this important reagent for synthesis. The elemental form of bromine, Br, is a liquid with an appreciable vapor pressure, while also being a powerful oxidant Oxidants are corrosive and need to be handled carefully and stored separately from organic compounds and reducing agents. For example, metallic objects or tools can often be oxidized; they could provide the electrons that an oxidant like bromine seeks. Oxidation (corrosion) can cause failure of metal components or structural weakness in a metal pipe; in larger scale production settings this could cause an accidental
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