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CH310M_Iverson_Hw9 - Homework Problem Set 9 Iverson...

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Homework Problem Set 9 Iverson CH310M/318M Due Wednesday, Nov. 11 1 Chemistry 310M Dr. Brent Iverson 9th Homework November 4, 2009 NAME (Print): _____________________________ SIGNATURE: _____________________________ Please print the first three letters of your last name in the three boxes
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Homework Problem Set 9 Iverson CH310M/318M Due Wednesday, Nov. 11 2 Score: _________
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Homework Problem Set 9 Iverson CH310M/318M Due Wednesday, Nov. 11 3 2 Br 2 Br 2 Br 2 CH 3 CH 3 NBS Br H 3 C CH 3 Br Br Br Br Br H Br Br H Br H 3 C CH 3 Br 1. (5 pts) Succintly define Hammond's postulate. Hammond's postulate says that the transition state for an exothermic step resembles the reactants more than the products of that step, and the structure of the transition state for an endothermic step resembles the products more than the reactants of that step. 2. (3 or 5 pts each) For the following, complete the reactions with the predominant product or products. You must indicate stereochemistry with wedges and dashes. If a racemic mixture is created, you must write "racemic" under the structures. not chiral Meso h ! racemic h ! racemic Think about this one!! racemic (anti addition) (reacts at more substituted C atom) The most stable alkene removes the chiral center at methyl.
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Homework Problem Set 9 Iverson CH310M/318M Due Wednesday, Nov. 11 4 Br Br Br Br H 2 O HgSO 4 H 2 SO 4 B H O Br 2 O NBS Br H 2 Br 2 Br Pt° h !
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