Exam 2 - CHEM 241 Synthesis Reactivity I Exam#2 Name Lab Section M T F This exam ends at 9:25 am as indicated by the clock in Althouse 110 In the

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CHEM 241 Synthesis & Reactivity I Exam #2 – March 10, 2006 Name:____________________ Lab Section: M T F This exam ends at 9:25 am as indicated by the clock in Althouse 110. In the space provided, give the best answer (3 points each) __ D __ 1. (+)-Xylose is: CH 2 OH OHC OH OH OH Which of the following is (-)-xylose? c) d) a) b) CH 2 OH OH OH OHC OH CH 2 OH OH OH OHC OH HOH 2 C OH OH CHO OH CH 2 OH OH OH OHC OH __ C __ 2. Which of the following is the best leaving group? a) b) c) d) OH - CN - O O- CH 3 CH 3 O - __ B __ 3. Which of the following is the weakest nucleophile? a) b) d) c) CH 3 CH 2 OH CH 3 CH 2 O - O C O - CH 3 OH __ B __ 4. In the reaction of H 2 O with (S)-2-bromobutane, the effect of reducing the volume of solvent by a factor of 2 (i.e. - from 4 mL to 2 mL) would be to multiply the reaction rate by: C CH 3 CH 2 CH 3 Br H + H 2 O a) 4 b) 2 c) 1/2 d) 1/4
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__ A __ 5. What is the major product of the following reaction? NBS RO-OR a) b) c) d) Br Br Br __ C __ 6. Tamiflu is a synthetic antiviral. How many stereoisomers are possible for this compound? a) 2
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This note was uploaded on 04/17/2008 for the course CHEM 241 taught by Professor Crouch during the Spring '08 term at Dickinson.

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Exam 2 - CHEM 241 Synthesis Reactivity I Exam#2 Name Lab Section M T F This exam ends at 9:25 am as indicated by the clock in Althouse 110 In the

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