Exam I - CHEMISTRY 30B UCLA SUMMER SESSION C 2006 MIDTERM...

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CHEMISTRY 30B UCLA SUMMER SESSION C 2006 MIDTERM EXAM I On my honor, I have neither given nor received any aid on this exam. ____________________________ __________________________ Signature I. D. Number _____________________________ Circle the Name of Your TA Name (Print) Juan Fernandez Rebecca Lui Alex Tucker-Schwartz Question Points -------------------------------------------------- 1 (20) -------------------------------------------------- 2 (10) -------------------------------------------------- 3 (18) -------------------------------------------------- 4 (18) -------------------------------------------------- 5 (18) -------------------------------------------------- 6 (20) -------------------------------------------------- Total
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Chemistry 30B, Summer 2006 Name: Page 2 THEORY 1. A. (6) A very important physical property that medicinal chemists must consider when designing new pharmaceutical agents is the water solubility. Explain how adding alcohol and ether groups to a molecule will increase its water solubility. B. (6) What are the approximate pKa’s of the following compounds? Propanol Water Propanoic acid Propanethiol Propyne C. (2) Based on the IR adsorption frequencies, which bond is stronger: C=C or C=O? D. (6) A bottle of colorless liquid smells like it might be 1-hexyne, or 3-hexyne. Explain in detail how you would use IR spectroscopy to identify it.
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Chemistry 30B, Summer 2006 Name: Page 3 MECHANISMS 2. (10) Propose a detailed mechanism for the following reaction.
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