Chem 210-1 F07 Ex3 p03

Chem 210-1 F07 Ex3 p03 - b) Provide on the right the full...

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4. When the compound 2-methyl propene is dissolved in methanol in the presence of fluoboric acid a new compound, "A", is formed. Compound "A" has a higher molecular weight than the starting alkene, and it has no fluorine in its structure. If ethanol is used as the solvent instead of methanol, a different product is observed. C CH 2 H 3 C H 3 C HBF 4 CH 3 OH compound "A" a) What is the structure of compound "A"? (3 points)
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Unformatted text preview: b) Provide on the right the full Lewis structure (all atoms, bonds, lone pairs, formal charges) for the anion portion of fluoboric acid, HBF 4- the counterion that's left when HBF 4 dissociates (3 pts) c) Why would HBF 4 be used here rather than some more common proton acid like HBr? (3 pts) d) Provide a step-by-step mechanism for the formation of "A" from 2-methylpropene (6 points)...
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This note was uploaded on 02/28/2012 for the course CHEM 210-1 taught by Professor Trzupek during the Fall '08 term at Northwestern.

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