Final_Exam_109B_F12_KEY

If the product is provided then suggest the possible

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Unformatted text preview: nalization of the molecule. 9. After performing a Grignard reaction (adding RMgBr to a carbonyl), you are left with an alkoxide. How can you get the desired alcohol and then separate it from the magnesium salts? (3) The typical procedure is to add an aqueous acid, or H3O+. This protonates the alkoxide and makes it soluble in organic solvent. The MgBr salts dissolve in the acidic aqueous layer. The layers can then be separated. Part III: Reactions 10. Provide the major product for the following reactions. If the product is provided, then suggest the possible reagents. (3 each) O Trace acid NH2 N O OH OH O O H2SO4, cat O (Ph3)P=CHCH2CH2CH3 3 O NaBH4, excess Cl OH O CH3CH2MgBr OMgBr OH O LAH NH2 NH2 O N NH2OH 1. NaNO2, HCl 0 deg C 2. H3PO2 3. Br2, FeCl3 NH2 OH Br 4 Part IV: Mechanisms 11. Provide the mechanism for the reaction below. (5) O H3CO CH3OH H2SO4, cat O CH3 12. Provide the mechanism for the f...
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This note was uploaded on 02/03/2014 for the course CHEM 109A taught by Professor Bruice during the Spring '07 term at UCSB.

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