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Chapter 17 HW - reagent a b c d O O O O 5 Devise efficient...

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Chemistry 52 Chapter 17 Problem Set 1. Predict the major organic product of each of the following reactions. If no appreciable reaction is expected, write NR. O O Br 2 O O O O NaOMe, O Br O Si Cl a) b) c) d) e) f) 1) 0.95 eq. LDA 2) PhCHO 3) dil. HCl 1) 1.05 eq. LDA 2) PhCHO 3) dil. HCl 1) NaH 2) 1) NaH 2)
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2. Suggest reagents and conditions to selectively accomplish the following conversions. O O O O O O O O O Ph O Ph O Ph O O OH a) b) c) d) e) f) g)
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3. Propose a reasonable and detailed mechanism to account for the following transformations. O Cl O O NaNH 2 O OH H NaOH H 2 O O O NaOMe MeOH O O O OH O O Ph Ph Ph a) b) c) + +
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4. Devise a preparation of each of the following compounds by use of an organocopper
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Unformatted text preview: reagent. a) b) c) d) O O O O 5. Devise efficient and stereoselective syntheses for the following achiral or racemic compounds. You may use any inorganic reagents, Ph 3 P, and the indicated organic precursors. O O NOH a) b) (from precursors containg 8 or fewer carbons) (from acetone, benzaldehyde, and ethanol) O CN O O c) d) e) f) (from precursors containing 6 or fewer carbons) (from precursors containing 5 or fewer carbons) (from precursors containing 5 or fewer carbons) (from precursors containing 5 or fewer carbons)...
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