EXAM42009

EXAM42009 - CHEMISTRY 2261 EXAM 4 November 18, 2009 LIST...

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CHEMISTRY 2261 November 18, 2009 EXAM 4 NAME (PRINT)____________________________________________ 1 2 3 4 5 6 7 8 9 10 11 TOTAL 12 (B.Q.) LIST number 1. (12 pts, 3 pts ea) Give the major product formed in each of the following E2 elimination reactions. EtO Na + EtOH EtO + EtO + EtO + a) b) c) d) Me F !! ! ! Br Cl Ph 2. (5 pts) Arrange the following alkyl halides in order of increasing ratio of E2 to S N 2 products observed in the reaction of each with sodium ethoxide in ethanol. A B C D increasing E2/S N 2 ratio < < < E < most S N 2 most E2 3. (6 pts, 3 pts ea) Give the major product of each of the following substitution reactions. b) H 2 O a) NaN 3 acetone
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2 4. ( 5 pts ) Rank the following alkyl bromides in order of reactivity using numbers 1-5 (1 = most reactive; 5 = least reactive) in an S N 2 reaction where the alkyl bromide is converted to the corresponding nitrile: NaCN NaBr R Br acetone R CN + N 5. (4 pts) Rank the following alkyl bromides in order of reactivity using numbers 1-4 (1 = most reactive; 4 = least reactive) in an S N 1 reaction where the alkyl bromide is converted to the
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This note was uploaded on 06/09/2011 for the course CHEM 2261 taught by Professor Crowe during the Spring '08 term at LSU.

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EXAM42009 - CHEMISTRY 2261 EXAM 4 November 18, 2009 LIST...

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