November 16, 2005

November 16, 2005 - PI CI-TEM 2370 Dr. S. A. Dantlekar...

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PI CI-TEM 2370 Dr. S. A. Dantlekar November 16"', 2005 Exam 4 A (100 points) Name: . Section A: 90 points: Select the best answer for ANY 18 of questions 1-23. You may answer extra questions, without penalty, for possible extra credit. ( 5 poiiits each ,-__ ( 1. (R)-3-Cbloro-1-butene reacts with HCI by Markovnikov addilion, and the products are separated by gas chroniatography. I-Iow marly total fractioils would be obtained and 1 how many would be optically active? A) Two optically active fractions and one optically inactive I3 One optically active fraction and two optically illactive C) One optically active fraction and one optically inactive d D) One optically active fraction only E) Two optically active fractions I <\\I , I L I I 2. Which of the following carbocatiolls would be likely to undergo rearrangement? A) CH3 I <, ', CH31'H--C-CH3 t + I I C'H3 D) More than one of the above E) All of the above 3. How inany :H NMR sig~lals would tlie following compound give? CI($CH~H j c l I I I
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CMEM 2370 Exam 4 A Nov 16"', 2003 ., 4. Which statement(s) is (are) true of acid-catal yzed alcohol deliydrations? A) Rearrangelnents of less stable carbocations to more stable carbocations are common.
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November 16, 2005 - PI CI-TEM 2370 Dr. S. A. Dantlekar...

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