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Unformatted text preview: Chem 30B Winter 2004 Final Exam – Part B Page 1 1. (6 points) Above or next to each arrow write the appropriate reagents. CH 2 OH CO 2 H CO 2 CH 3 HO 2. (2 points) Circle the molecule with the highest boiling point. H 2 N NH 2 O H 2 N CH 2 CH 3 O CH 3 CH 2 CH 2 CH 3 O 3. (5 points) Fill in the blanks with the number or phrase (no more than four words) that best completes each sentence: The molecular force that has the greatest influence on your choice in question 2 is __________________________. This force is typically ______________ kcal mol-1 . Another, very weak molecular force that also influences the boiling point of this compound is __________________________. 4. (2 points) The solubility of urea in water is best described as (circle one): Highly soluble Moderately soluble Insoluble Cannot be estimated 5. (10 points) For each pair of reactions, write the product of the faster reaction in the box between the reactions. ⇓ Product of faster reaction ⇓ (a) O 1. CH 3 MgBr 2. H 3 O + H O 1. CH 3 MgCl 2. aq. H 2 SO 4 (b) N(CH 3 ) 2 O PhNH 2 H 3 O + CH 3 O O PhNH 2 H 3 O + Chem 30B Winter 2004 Final Exam – Part B Page 2 6. (12 points) Suggest a series of reactions to synthesize the following ester. All of the carbon atoms in the target ester must come only from toluene (PhCH 3 ) or bromobenzene (PhBr). (It is not necessary to use both.) You may use any other needed reagents and reasonable reactions. Logical retrosynthesis may earn some partial credit, but is not required. OK to use the Ph abbreviation....
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This note was uploaded on 08/11/2010 for the course CHEM CHEM 30B taught by Professor Maynard during the Winter '08 term at UCLA.
- Winter '08