1.What would be the product of the following reaction? Pge】
Page 1 1. What would be the product of the following reaction? O CH3 H CH3OH H+ ? A) OH CH3 H OCH3 B) H OH CH3O CH3 C) OH H CH3O CH3 D) H OH H3C OCH3 E) OH H CH2 Ans: A
2.What would be the product of the following reaction? 25℃ CH3CH2OCH2CH3 2 (slow) CO+BO CH3-CH-O-CH2-CH3 OOH C)CH:-CH2-0-CH2-CH2-OOH D)CH-CH2-O-O-CH2-CH3 E)CH;-CH2-O-CH2-CH2OH Ans:B Ot ing would you)coiline points would CH:OCH: Ans:C 4.What reagent would best accomplish the following reaction? CH2CH2OH B)NaBr C)CH;Br D)NH,*Br E)PBr Page2
Page 2 2. What would be the product of the following reaction? A) CO2 + H2O B) OOH CH3 CH O CH2 CH3 C) CH3 CH2 O CH2 CH2 OOH D) CH3 CH2 O O CH2 CH3 E) CH3 CH2 O CH2 CH2OH Ans: B 3. Which of the following would you expect to have the lowest boiling point? A) CH3CH2OH D) CH3SCH3 B) CH3CH2SH E) boiling points would be the same. C) CH3OCH3 Ans: C 4. What reagent would best accomplish the following reaction? CH2CH2OH CH2CH2Br ? A) Br2 B) NaBr C) CH3Br D) NH4 + Br- E) PBr3 Ans: E
5.What would be the expected product of the following reaction? Page 3
Page 3 5. What would be the expected product of the following reaction? SH + I2 ? A) S S B) I C) (trans) D) (cis) E) O S O OH Ans: A
6.What would be the expected product(s)of the following reaction? HI(excess) CHCH2CH2CH2-O-CH2CH2CH2CH3 heat CHCH-CH-CH.OH CH.CH.CHCH CH;CH2CH2CHI-O-CH2CH2CH2CH3 8 2 CH;CH-CH-CH2I CH;CH2CH2CH2-Q-CH2CH2CH2CH; Page4
Page 4 6. What would be the expected product(s) of the following reaction? CH3CH2CH2CH2 O CH2CH2CH2CH3 ? HI (excess) heat A) CH3CH2CH2CH2OH + CH3CH2CH2CH2I B) CH3CH2CH2CHI-O-CH2CH2CH2CH3 C) 2 CH3CH2CH2CH2I D) CH3CH2CH2CH2 O CH2CH2CH2CH3 H + IE) no reaction occurs Ans: C
7.What would be the major organic product from the following reaction? H马OH HCI(cone) CH;- H.C CH ，CH3 H CH CH3- H;C CH HH CI (racemic) H.C CH -CH H H c二 H:C CH Ans:D Page5
Page 5 7. What would be the major organic product from the following reaction? H CH3 C H3C C OH CH3 H ? HCl (conc) A) H CH3 C H3C C Cl CH3 H B) H CH3 C H3C C H CH3 Cl C) H CH3 C H3C C Cl CH3 H (racemic) D) Cl CH3 C H3C C H CH3 H E) C H3C H3C C CH3 H Ans: D
8.What would be the best name of the following compound? 2-buto yethane 2-ethoxybutane 1-methy-1-ethoxypropane Ans:E 9 unctio as an anes ble It can react slowly with oxygen at room temperature. E)All of the above are true. Ans:E Page6
Page 6 8. What would be the best name of the following compound? O A) 3-methyl-4-oxohexane D) (1-ethyl)-diethylether B) 2-butoxyethane E) 2-ethoxybutane C) 1-methy-1-ethoxypropane Ans: E 9. What significant characteristic(s) does diethyl ether exhibit? A) It functions as an anesthetic. B) It is extremely flammable. C) It is a common solvent. D) It can react slowly with oxygen at room temperature. E) All of the above are true. Ans: E
10.Which of the following reactions would be the best for the preparation of anisole (methoxybenzene) O-CH3 on con H2SO 1.CH3MgBr 2H0+ one of the Page7
Page 7 10. Which of the following reactions would be the best for the preparation of anisole (methoxybenzene)? O CH3 A) Br ? CH3O- Na+ B) OH ? CH3OH H2SO4 C) O- Na+ ? CH3Br D) O ? 1. CH3MgBr 2. H3O+ E) None of the above would work. Ans: C
11.Which of the following reactions would be best for the preparation of Nerolin II c O-CH2CH3 Nerolin II (odor of orange blossoms) on angna H2S04 os CICIE DMSO CH;CH2O Na* DMSO D Ans:B ncombustion nu The nroducts can tration E) By absorbing all of the oxygen in closed areas,ethers pose suffocation risks Ans: Page8
Page 8 11. Which of the following reactions would be best for the preparation of Nerolin II? O CH2CH3 Nerolin II (odor of orange blossoms) A) OH ? CH3CH2OH H2SO4 B) O- Na+ ? CH3CH2Br DMSO C) Br CH3CH2O- Na+ DMSO ? D) Any of the above would work. E) None of the above would work. Ans: B 12. Why is the autoxidation (slow oxidation by air) of ethers important? A) Several industrial chemicals are made by this method. B) The heat generated often leads to open combustion. C) It makes ethers unusable as anesthetics. D) The products can explode upon concentration. E) By absorbing all of the oxygen in closed areas, ethers pose suffocation risks. Ans: D
13.What would be the product of the following reaction? CH3S"K' Page9
Page 9 13. What would be the product of the following reaction? O H H ? CH3S- K+ A) H OH H SCH3 B) OH H3CS H H C) H OH H SCH3 D) OSCH3 H H H E) H OH Ans: A
14.What product would result from the following reaction 9 HBr (exces） Page 10
Page 10 14. What product would result from the following reaction? O ? HBr (excess) heat A) O Br B) OH Br C) O Br D) Br OH E) Br Br Ans: B