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首頁 > 研究所、轉學考(插大)-有機化學 > 109年 - 109 國立台灣大學_碩士班招生考試：有機化學(A)#90650 >

19. Which of the following compounds has a chirality center with the R configuration? (A) (B) (C) (D) (E)

其他申論題

15. What is the major final organic product of the following reaction? (A) (B) (C) (D) (E)No reaction

16. What is the major final organic product of the following reaction? (A) (B) (C) (D)Both A and C (E)No reaction

17. What is the major final organic product of the following reaction? (A) (B) (C) (D) (E)

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

20. Which of the following is a meso compound? (A) (B) (C) (D) (E)

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

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

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

24. How many of the following reactions give enantiomeric pairs as major products? (A)1 (B)2 (C)3 (D)4 (E)5

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

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