CHM 201T Fall 2008 Quiz - Questions C:10 Fog 1(5 points...

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Unformatted text preview: Questions C :10 Fog 1. (5 points). What is the major product of the following reaction? /I\ + Bra in» (3) Br Br (0) /l\/Br (d) MBr 2. (5 points). How many monochlorination products would theoretically be obtained for the following reaction, disregarding stereoisomers? 3. (5 points). How many stereoisomers would be obtained for the major product of the following reaction? a ;: .n- .- fi ------£? / _ I .1 RN Id -HI I. l + HBr perom e 0 8r Q, U. M; I (a) 4 (b) 6 m (d) 9 4. (5 points). What is the major product of the following reaction? 0 + QNBI‘ perfxide Q “C o \/_ (a) B, (c) Br (d) 17$ 9 a Sim 5. (5 points). What is the approximate pKa value for the most acidic proton of the molecule below? + /“NH3 (a) <0 (b) ~5 (c) ~10 (d) ~15 6. (5 points). Rank the following compounds in order of decreasing reactivity for the reaction with HBr (high reactivity > low reactivity): A B c 6' g =< =<¥OM I =( - 0‘ ’3 r; 00*“ e OMe (a)A>B>C (c)A=B>C (d)C>A>B I C 55 [4 i nth/{J 7. (5 points). Which 8N2 reaction is faster, A or B? 1 _ A _. 0 Chic /\3- M60 0 .4— 3N2 + + ASMe _ Mes“ yer-5; kw "i? (a) A (c) both rate constants are about same. (d) cannot determine from the inform on given. 8. (5 points). An alcohol and a sulfonyl chloride were mixed in the absengg of pyridine as shown below. What is the theoretical yield for the desired product? OH H CH20|2 a 0% iel (b) 50% yield (c) 100% yield ((1) cannot determine from the information given. 3 r J -- w, ;—~---J = J I 9. (5 points). What will be the major product of the reaction of 1 mol of 2-butync with Br; (2 mol) in CH2C12? ) (c) (d) Br ' (b) Br Br Br Br Br Br .. H H Br Br 10. (5 points). How many products (including stereoisomers) would the following reaction provide? Bf -- (3/ OK, 3'2 0+1ch2 v (b) 6 (c) 8 (d) 10 ll. (5 points). How many products (including stereoisomers) would the reaction of 4- ethylcyclopentene with a peroxyacid provide? (a)1 ((6/2 .(c) 3 (d) 4 12. (5 points). What reagents are required for the following transformation? Mo ((151.Hg(Br)z,HBer20 (c) . HP, 2‘. H207, Harm /\/o\ (d) HBr, H20 . 13. (5 points). What is the reactant for the following reaction? / 0 H9804 reactant —-—n- H20 (a) W (b) ' (d) 0A0“ 0A 14. (5 points). How many products (including stereoisomers) does the following Diels- Alder reaction provide? DieIs-Alder 0 reaction Q + fiOMe (b) 4 (c) ' (d) f 15. (5 points). What is the major product obtained from the solvolysis of the following compound in methanol? 16. (5 points). How many products (including stereoisomers) would the following reaction provide? / o 52:53?” _ t \ + fi H - ox 0 [—' H’ \ b (a) 2 (c) 6 (d) s 17. (5 points). What is the major product of the following reaction? POCI "\ . A 3 «a OH N 1 x / (a) (C) (d) *0 AOH 2 t a db C77" Wig f 18. (5 points). Which of the following alkyl halides could be successfully used to fom‘r a Grignard reagent? 19. (5 points). The rate of reaction of menthyi chloride with ethoxide ion was measured under E2 conditions, and then the rate of reaction of neomenthyl chloride with ethoxide ion was measured under the identical conditions. Which reaction had the smaller rate constant? . a“ ’ 95,1!" I, H cw" _- R A menthyl chloride neomenthyl chloride (b) neomenthyl chloride (0) both rate constants are about same. (d) cannot determine from the information given. 20. (5 points). Theoretically, what is the maximum number of chiral centers a Diels— Alder reaction can establish at a time? (a) 2 (b) 3 (d) 6 High -—-f SS 4?; —-—- 43 E 3?: -—- 3s 2px —-——- 25 —-3d ...
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This note was uploaded on 10/06/2011 for the course CHM 201T taught by Professor Takanaka during the Fall '08 term at University of Central Florida.

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CHM 201T Fall 2008 Quiz - Questions C:10 Fog 1(5 points...

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