exam1 - 4. Propose a valid mechanism for the formation of...

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CHM2211 Examination I Spring February 14, 2004 Name______________________________ Section/TA__________________________ 1. Give the common name or structure for the following questions. (2 pts. each) 2. Label the following molecules as AROMATIC or NOT AROMATIC. (1 pt. each) OCH 3 Br Br NH 2 O 2 N 3-nitrobenzoic acid o -xylene H N N H H O
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Name______________________________ 3. Predict the product of the following reaction sequences or provide reaction conditions where required. Assume workup after each step when appropriate. Give the major product and include stereochemistry when necessary. If no reaction will occur write NR. (4 pts. each) i) Br 2 , FeBr 3 ii) Mg, THF ° iii) CH 3 COCH 3 i) NBS ii) EtONa iii) OHC CHO HBr -80 C ° i) HF, ii) Br 2 , iii) KO t- Bu OHC CHO
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Name______________________________ 3. cont. HBr 40 C ° HNO 3 H 2 SO 4 Br O H i) ii) iii) CO 2 Me CO 2 Me H H OCH 2 CH 3 O O OCH 2 CH 3 OH O
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Name______________________________
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Unformatted text preview: 4. Propose a valid mechanism for the formation of the following product. Include all significant resonance structures (10pts.) Br Br Br 2 40 C CCl 4 What would you call this particular type of addition? Name______________________________ 5. Propose a valid multi-step synthesis for the following transformations. Credit will not be given for mechanistic reasoning. Show reaction conditions and intermediate products formed at each step. (15 pts.) Br Br O O O Name______________________________ 6. Propose a valid multi-step synthesis for the following transformations. Credit will not be given for mechanistic reasoning. Show reaction conditions and intermediate products formed at each step. (15 pts.) H O...
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exam1 - 4. Propose a valid mechanism for the formation of...

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