CHM2210EXIVV2F11

CHM2210EXIVV2F11 - Last Name First Name Panther ID FLORIDA...

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Last Name, First Name__________________________ Panther ID_____________ FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry & Biochemistry CHM 2210-U01 – ORGANIC CHEMISTRY I Fall 2011 EXAM IV Dr. Keller/Dr. Landrum Version 2 Instructions: Choose the BEST answer to each multiple choice question. Look over the Written Questions early during your test to be sure you allocate your time appropriately.
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Page | 2 A) Br B) Br H D) NH 2 C) Br NaNH 2 Excess Br Work-up 4 Cl CH3 D C E) Na B) C) D) E) All are Equally stable CH 3 D H Br CH 3 D Br H H D CH 3 Br D CH 3 H A) B) C) D) E) Both B and D would be produced 1. Hydroboration of alkenes A. occurs in a single step to produce a diol B. results in syn diols C. requires oxidation of the alkyl borane D. is not regioselective 2. Which reagent will convert 2- butyne into cis -2- butene? A. H 2 (1atm), Pt B. Na/NH 3 (l) C. NaBH 4 D. H 2 (1 atm), Pd (BaSO 4 ), quinoline (Lindlar’s catalyst) E. 1) Li, NH 3 ; 2) NH 4 Cl 3. The reaction below produces which product? 4. Which product(s) is/are produced by hydrobromination of 5. Hydration of alkenes in dilute H 2 SO 4 involves A. protonation of the alkene in the 1 st step B. addition of H 2 O in the 1 st step C. Nucleophilic attack of H 2 O on the alkene D. None of the above 6. Oxymercuration/demercuration of alkenes A. occurs via formation of the bridged (cyclic) mercurinium ion B. produces syn -addition of H 2 O to the double bond C. requires oxidation of the carbon mercury bond D. is not regioselective 7. Hydroboration of 1-methycyclopentene produces 8. Which alkene would be the most stable? CH 3 OH OH CH 3 OH CH 3 CH 3 CH 3 OH A) B) D) E)
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Page | 3 C) D) Br NaOCH 3 CH 3 OH A) B) 9. Zaitsev’s rule A. predicts the stability of the alkene formed B. predicts the product distribution for addition reactions of alkenes C. predicts the major product of Elimination reactions D. explains the regioselectivity of halohydrin formation E. NONE of the above 10. Which carbocation would form during the addition of HBr to 2-methyl-2-butene? 11. The stabilities of alkenes A. can be determined from the heats of hydrogenation B. Decreases with alkyl substitution C. Determines the E2 product formed according to Zaitsev’s rule D. Is the result of steric factors only E. A B & C 12. How many moles of H 2 will react with the ene-yne shown below A. 5 - B. 6 C. 8 D. 13 E. 16 13.
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This note was uploaded on 12/22/2011 for the course CHEMISTRY 2210 taught by Professor Keller during the Spring '11 term at FIU.

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CHM2210EXIVV2F11 - Last Name First Name Panther ID FLORIDA...

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