CHEM 2321 Chapter 8 Addition Reactions of Alkenes exam with answers

CHEM 2321 Chapter 8 Addition Reactions |\ |\ |\ |\ |\ |\




of Alkenes exam with answers
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hydrohalogenation - CORRECT ANSWERS ✔✔adding |\ |\ |\ |\ |\



hydrogen and a halogen |\ |\ |\




Markonikov regiochemistry - CORRECT ANSWERS |\ |\ |\ |\ |\



✔✔halogen goes to the more-substituted C |\ |\ |\ |\ |\




anti-Markonikov regiochemistry - CORRECT ANSWERS |\ |\ |\ |\ |\



✔✔halogen goes to the less-substituted C |\ |\ |\ |\ |\




the regiochemistry of hydrohalogenation reaction is -
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CORRECT ANSWERS ✔✔Markonikov |\ |\




in the presence of ROOR (peroxide), the regiochemistry of
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a hydrohalogenation reaction is - CORRECT ANSWERS
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✔✔anti-Markonikov


why is a hydrohalogenation reaction NOT stereospecific? -
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CORRECT ANSWERS ✔✔the carbocation is sp² and planar,
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so the nucleophile can attack from either side (racemic
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mixture possible) |\

, acid-catalyzed hydration - CORRECT ANSWERS ✔✔adding |\ |\ |\ |\ |\ |\



H₂O catalyzed by acid
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what's the regiochemistry of acid-catalyzed hydration
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reactions? - CORRECT ANSWERS ✔✔Markonikov (OH goes
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to more-substituted C)
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is an acid-catalyzed hydration reaction stereospecific? -
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CORRECT ANSWERS ✔✔no (can be racemic)
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how do you control equilibrium position in acid-catalyzed
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hydration reactions using H2SO4? - CORRECT ANSWERS
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✔✔diluted H₂SO₄ favors addition |\ |\ |\ |\




concentrated H₂SO₄ *with* *heat* favors elimination
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oxymercuration-demercuration - CORRECT ANSWERS |\ |\ |\ |\



✔✔mercury is used |\ |\




hydration reaction |\




what is the regiochemistry of oxymercuration-
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demercuration reactions? - CORRECT ANSWERS |\ |\ |\ |\ |\



✔✔Markonikov (OH goes to more-substituted C) |\ |\ |\ |\ |\




why is oxymercuration-demercuration a better method of
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hydration than acid-catalyzed hydration? - CORRECT
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