Second Practice Midterm

Second Practice Midterm - alkyl halide (up to 2 carbons...

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Practice Exam Solving this exam should take 1 hour max. Good luck ! 1. What will be the major product of the following reactions? Pay careful attention to the stereochemistry of the product. HNO 3 /H 2 SO 4 H 2 O, H 2 SO 4 HgSO 4 KOH, heat heat H H OMe OMe O O 1. NaNH 2 2. CH 3 CH 2 Br Br Br
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2. Complete the following reactions. Pay careful attention to the stereochemistry of the product. Na/NH 3 + O + heat + OMe Br 2 FeBr 3 3. Provide a detailed mechanism for the following reaction using a curved arrow notation. HBr Br
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4. How would you complete the following synthesis? You may use acetylene, additional
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Unformatted text preview: alkyl halide (up to 2 carbons units) and any necessary reagents. ? 5. a. Draw the structure of the active electrophile in the nitration of benzene b. Draw the most important resonance contributor that explain why the amino group is an ortho director. c. Draw the thermodynamic product of addition of HBr to 1,3 butadiene. d. Draw a schematic representation of the HOMO in 1,3-butadiene. 6. Label each of the following compounds as being aromatic or non-aromatic. H O...
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This note was uploaded on 04/08/2009 for the course CHEM 140BH taught by Professor Weizman during the Winter '09 term at UCSD.

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Second Practice Midterm - alkyl halide (up to 2 carbons...

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