practiceexam3a

practiceexam3a - A) Br-OC(CH 3 ) 3 OC(CH 3 ) 3 10 pts B) Cl...

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3. Draw a mechanism for the depletion of ozone by chlorofluorocarbons. Clearly name each type of step involved in the reaction process. 4. Complete the equations shown below. You need not indicate stereochemistry but you should show all major regioisomers formed. A) NBS h ν B) ignore this one 16 pts 12 pts
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OH Br NaH C) ignore this one OH OH O D) OH I 5. Rationalize the products of the following reaction. Clearly show the pathway by which the products are formed. (Draw all intermediates and a mechanism as appropriate. Use clear structures and curly arrows.) 12 pts
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N Br H 2 O N OH + N OH 6. The following reactions do not afford the major product that is given. Explain why this is so, and draw the major product that is actually formed.
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Unformatted text preview: A) Br-OC(CH 3 ) 3 OC(CH 3 ) 3 10 pts B) Cl I-7. Predict the mechanism of substitution in each reaction and show the products (you must show any associated stereochemistry). A) Br H-CN products mechanism? acetone B) products mechanism? Br CH 2 CH 2 CH 3 CH 3 OH 10 pts 8. Predict the product and draw a mechanism for its formation. Clearly identify each step in the mechanism. In addition, give one potential termination step. HBr, ROOR 12 pts 8 pts 9. Given the two molecules below, predict which will undergo the indicated reaction more quickly. Justify your answer. Br OH-Br OH-A B...
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This note was uploaded on 07/02/2011 for the course CHEM S341 taught by Professor Staff during the Spring '11 term at Indiana.

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practiceexam3a - A) Br-OC(CH 3 ) 3 OC(CH 3 ) 3 10 pts B) Cl...

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