exam2_f99 - Chem 12A Dr. Harrison EXAM #2 Name _ 1. (8 pts)...

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Chem 12A EXAM #2 Name __________________ Dr. Harrison 1. (8 pts) Show the radicals most likely to form from the molecule below and explain why this compound is chosen as an initiator in radical reactions. CO O OC O 2. (9 pts) a)Draw the structure (1R,2S,3S)-1,2-dibromo-3-ethylcyclohexane. Draw all hydrogens with dashed lines. b) How many total stereoisomers are possible for this compound? _________ c) If all of the stereoisomers were spotted on a TLC plate how many dots would have the same Rf values. EXPLAIN. 3. (8 pts) There are two products that are formed from this reaction. What are the products and which one is more stable? NBS, CCl 4
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4. (8 pts) Predict the product of the following reaction. CH 3 C H 3 C N N + light 5. (10 pts ) The reaction below produces two products by two different mechanisms. Write the structure of each product and explain the optical rotation results. H Br + - OCH 3 1 2 C 5 H 12 O C 5 H 12 O Optically active not optically active 6. (8 pts) The reaction below proceeds through an S
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exam2_f99 - Chem 12A Dr. Harrison EXAM #2 Name _ 1. (8 pts)...

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