fall03org1e2

fall03org1e2 - Fall 03 Exam 2 Chapters 5-8 100points Name...

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Fall 03 Exam 2 Chapters 5-8 100points N a m e If you do not want your graded exam placed in the box outside my office, then please tick here Answer all the questions. 1) (6pts) Assign (R) or (S) to all the chiral centers in the following molecules. Cl FC H 3 OH CO 2 H Br Br Cl H CF 3 F H CH 2 (a) (b) (c) F F 2) (4pts) List all four things that can happen once a carbocation is formed. 3) (12pts) Name these C 4 H 8 isomers in IUPAC form. (Bear in mind their names should all be different!) Fall03org1ex2 - 1 -
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4) (12pts) Identify these pairs of compounds as same , stereoisomers or structural isomers . Br Br H H Br H Br H H H Br Br Br Br H H H Br H Br H Br Br Br H H HB H Br Br H (a) (b) (c) (d) r 5) (10pts) For each pair of molecules, (i) circle the one which will undergo S N 1 type reactions the quickest, and (ii) write a sentence to explain your answer/guess. Br (a) (b) Br F (c) IC 2 I (d) F CH 2 F (e) Br Br Cl H Fall03org1ex2 - 2 -
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6) (8pts) Write a mechanism (i.e. curly arrows) for this E2 elimination. K +- O t Bu Br 7) (9pts) Draw and label an Energy Level Diagram for a typical S N 1 process. Fall03org1ex2 - 3 -
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fall03org1e2 - Fall 03 Exam 2 Chapters 5-8 100points Name...

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