A.is a ketone B.is a ketone or an aldehyde C.is a methyl ketone D.a and care both correct E.this qualitative test yields ambiguous results;none of the above are correct 21.Which of the following reactions will not yield benzoic acid as the major product? CaN Hior 0四 22.Which of the following reagent(s)used for alkylation process of benzene? A.CHCI/AICI B.CH3MgBr/ether/H.O C.MnO/H:O/heat D.NBS/CCI 23.Which of the molecules below has the highest amount of enol form at equilibrium? 0 b、 入H 24.What is the product of the following reaction? 、HNNH,KOH A.2-methylpentane B.3-methyl-2-pentanol C.3-methyl-2-pentene D.3-methyl-1-pentyne 25.Which of the following molecules meets the Huckle definition for aromaticity: A□ a c.△ D.△ 26.Which of the following hemiacetal Carbohydrates is a-D-configuration: CHOH H CH.OH OH OH OH CHOH CH.OH 27.Which would be the major organic product of this reaction? 第4页 第 4 页 A. is a ketone B. is a ketone or an aldehyde C. is a methyl ketone D. a and c are both correct E. this qualitative test yields ambiguous results; none of the above are correct 21. Which of the following reactions will not yield benzoic acid as the major product? 22. Which of the following reagent(s) used for alkylation process of benzene? A. CH3Cl/AlCl3 B. CH3MgBr/ether/H2O C. MnO4 – /H2O/heat D. NBS/CCl4 23. Which of the molecules below has the highest amount of enol form at equilibrium? a. b. c. d. O H O O O H O H O 24. What is the product of the following reaction? O H2NNH2 , KOH Heat A. 2-methylpentane B. 3-methyl-2-pentanol C. 3-methyl-2-pentene D. 3-methyl-1-pentyne 25. Which of the following molecules meets the Hückle definition for aromaticity: A. B. C. D. + 26. Which of the following hemiacetal Carbohydrates is a-D-configuration: A. B. C. D. O CH2OH O OH OH OH H O CH2OH O OH OH OH H O OH CH2OH OH OH HO O CH2OH O OH OH H OH 27. Which would be the major organic product of this reaction?