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研究所、轉學考(插大)-有機化學
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109年 - 109 國立台灣大學_碩士班招生考試：有機化學(A)#90650
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20. Which of the following is a meso compound? (A)
(B)
(C)
(D)
(E)
其他申論題
16. What is the major final organic product of the following reaction? (A) (B) (C) (D)Both A and C (E)No reaction
#371300
17. What is the major final organic product of the following reaction? (A) (B) (C) (D) (E)
#371301
18. Which of the following reagents could not oxidize ethanol? (A) 1)DMSO, (COCI)2; 2) Et3N (B) (C) PCC (D) Na2Cr2O7,H2SO4 (E) SOCI2
#371302
19. Which of the following compounds has a chirality center with the R configuration? (A) (B) (C) (D) (E)
#371303
21. Which of the following types of compounds could not afford carboxylic acid product upon hydrolysis? (A) nitrile (B)triglyceride (C) thioester (D) enamine(E)imide
#371305
22. Which of the following thermal reactions does not need a catalyst? (A) hydrogenation of isoproylene (B) hydration of acetylene (C) cis-trans isomerization of 2-butene (D) Wolff-Kishner reduction of acetone hydrazone (E) Cope rearrangement of 3-methyl-1,5-hexadiene
#371306
23. Which of the following reagents would not convert an alkene to an alcohol? (A) Br2, H2O (B) (1) Hg(OAc)2, H2O; (2) NaBH4(C) 1) MCPBA; 2) H3O+ (D) 1) O3; 2) CH3SCH3(E) 1) BH3-THF; 2) H2O2, NaOH
#371307
24. How many of the following reactions give enantiomeric pairs as major products? (A)1 (B)2 (C)3 (D)4 (E)5
#371308
25. Which type of reaction accounts for the oxidation of a primary alcohol to an aldehyde? (A) Substitution (B) Addition (C) Elimination (D) Rearrangement (E) Chain reaction
#371309
26. What type of compound would best fit the following IR spectrum? (A) Alkene (B) Alkyne (C) Phenol (D) Aldehyde (E) Amide
#371310
(B)
(C)
(D)
(E)
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(B) (C) (D) (E)