14.What reactants are required to achieve the following transformation? ？ o A) NaCN 1)NaOH 2)KCN S-CH3 c-一pnoine 2.KCN 1)Br2/light 2)NaCN E)none of the above Ans:C 15.To which side (if any)would the following equilibrium lie? CH;CH2SK*+HOH CHCH2SH KOH to the right t and lef E)only SN2.SNI and E2 reactions are possible Ans:A 16.Several alkyl halides,including iodomethane,are known carcinogens or cancer-suspect materials To destroy these materials by conversion to non-ele can B)NHs D)Nal E)CH3CO2H Ans:B 17.Which of the following is not normally a good leaving group on carbon? A)Br B)OCH3 C)CI D)OSO2R E)I Ans:B Page 8 Page 8 14. What reactants are required to achieve the following transformation? OH CN ? A) NaCN B) 1) NaOH 2) KCN C) 1. 2. KCN Cl S O O CH3 , pyridine D) 1) Br2 / light 2) NaCN E) none of the above Ans: C 15. To which side (if any) would the following equilibrium lie? CH3CH2S- K+ + HOH CH3CH2SH + KOH A) to the left B) to the right C) equally to the right and left D) there is no way to tell E) only SN2, SN1 and E2 reactions are possible Ans: A 16. Several alkyl halides, including iodomethane, are known carcinogens or cancer-suspect materials. To destroy these materials by conversion to non-electrophilic species, you can react them with nucleophiles. Which of the following would be the best for rapidly destroying methyl iodide (iodomethane)? A) CH3OH B) NH3 C) H2O D) NaI E) CH3CO2H Ans: B 17. Which of the following is not normally a good leaving group on carbon? A) Br B) OCH3 C) Cl D) OSO2R E) I Ans: B