key 4 - NAME last, first 810# SCORE CHEMISTRY 2211 EXAM 4...

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NAME last, first 810# CHEMISTRY 2211 EXAM 4 December 2, 2009 Be sure to read each question carefully. Partial credit will be assigned where appropriate. Relax and good luck!! 1. (12 points) The dienes shown below were treated with HBr. Draw structures for the major products/intermediates formed under the specified conditions. Resonance Hybrid Major Product Major Product Intermediate formed at -25 ° C formed at 60 ° C 2. (15 points) Predict the product(s) of the following reactions. Designate the R,S configuration at every chiral carbon by writing R or S immediately next to the chiral carbon. Write meso next to any meso diastereomers that are formed. SCORE 1. ____________ 2. ____________ 3. ____________ 4. ____________ 5. ____________ 6. ____________ 7. ____________ 8. ____________ Bonus ________ ______________ TOTAL CH 3 δ + δ + 3 Br 3 Br δ + δ + Br Br CHO HO H R OH
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2. (continued) Predict the product(s) of the following reactions. Designate the R,S configuration at every chiral carbon by writing R or S immediately next to the chiral carbon. Write meso next to any meso diastereomers that are formed.
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key 4 - NAME last, first 810# SCORE CHEMISTRY 2211 EXAM 4...

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