ochem final 2005 - CHEMISTRY 314-02 FINAL EXAM May 04, 2005...

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CHEMISTRY 314-02 FINAL EXAM May 04, 2005 Name ..................................................................................... The total number of points in the final is 100. The total exam time is 120 min (2 h). Good luck! PART I: CONCEPTS 1. (15 pts) Mark as true ( T ) or false ( F ) the following statements. Do not explain! The coupling constant in NMR depends on the operating frequency of the instrument; The chemical shift in NMR depends on the operating frequency of the instrument; In MS, molecules with odd number of nitrogen atoms give odd molecular ions; Ethers are Lewis bases; Deactivating groups on aromatic rings are always meta- directing; Friedel-Crafts reactions do not work with deactivated benzene rings; Grignard reagents contain carbon-lithium bonds; Carbenes are electron-deficient; The Fischer esterification is conducted only with acid catalyst; The acetal formation is conducted only with base catalyst; Acid chlorides are more reactive than amides; Tertiary amines are less basic than secondary amines; The Hoffmann elimination leads to the predominant generation of the less substituted alkene; Epimers are diastereomers; Anomers are C1 epimers; 2. Circle all that apply: A. (2 pts) The following reactions lead to generation of carboxylic acids: a. Oxidation of aldehydes; b. Baeyer-Villiger oxidation of ketones; c. Reaction of Grignard reagents with carbon dioxide, followed by acid; d. Acid-catalyzed hydrolysis of nitriles; B. (2 pts) The following reactions occur through enolate ions: a. Sandmeyer reaction; b.
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This test prep was uploaded on 04/20/2008 for the course CHM 314 taught by Professor Benin during the Spring '08 term at University of Dayton.

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ochem final 2005 - CHEMISTRY 314-02 FINAL EXAM May 04, 2005...

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