Quiz 2B 10.01.10

Quiz 2B 10.01.10 - O d O b OH e H O c O f ANSWER: _____ O O...

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1 Quiz 2 Name October 1, 2010 Chemistry 262 1. Provide a complete arrow pushing mechanism for the reaction below [9 pts]. MULTIPLE CHOICE: 2 pts each 2. What are the missing reagents? (Choose one answer.) OH O H O a. 1. LiAlH 4 , THF 2. H 2 O c. 1. SOCl 2 2. LiAlH 4 , THF 3. H 2 O e. 1. DIBALH, -78 o C 2. H 2 O d. 1. CH 3 OH, H + 2. LiAlH 4 , THF 3. H 2 O b. NaBH 4 , EtOH f. 1. CH 3 OH, H + 2. DIBALH, -78 o C 3. H 2 O ANSWER: _____
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2 3. What is the major organic product of the following reaction? (Choose one answer.) 4. Why does the reaction below give only 50% yield? Not all products are illustrated. (Choose the two best answers.) CH 3 Br 1. 2 Li o , pentane 2. CO 2 3. CH 3 Br OCH 3 O a OH
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Unformatted text preview: O d O b OH e H O c O f ANSWER: _____ O O O NH 2 1.0 M 1.0 M N H O 0.5 M a. The anhydride starting material won ʼ t react without a catalyst. b. The amine nucleophile won ʼ t react without a catalyst. c. The equilibrium lies to the left. d. The acidity of one of the initial reaction products is problematic. e. The basicity of one of starting materials is problematic. f. The acidity of one of the starting materials is problematic. g. The basicity of one of the products is problematic. h. The amide product is unstable. i. The anhydride starting material is too stable. ANSWERS: _____ _____...
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This note was uploaded on 10/25/2010 for the course CHEM 262 taught by Professor Forbes during the Fall '08 term at UNC.

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Quiz 2B 10.01.10 - O d O b OH e H O c O f ANSWER: _____ O O...

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