49. What is the correct product in the following reaction?
(Aniline + acid chloride/pyridine → then AlCl₃ → then H₃O⁺ → product, choices A-E are structures)

(A) A

(B) B

(C) C

(D) D

(E) E

46. What is the major product from the following reaction? (Methylcyclopentanone + H₃¹⁸O⁺ → ?, choices A-E show ¹⁸O-labeled products) (A) A (B) B (C) C (D) D (E) E

47. When an ¹⁸O-labelled ester is treated with NaOH in H₂O, carboxylic acid and alcohol are isolated. Which of the following statements is true? (¹⁸O-ester + OH⁻/H₂O → R-COOH + R’-OH) (A) ¹⁸O remains in both oxygen atoms of the carboxylic acid. (B) The solvent water should contain ¹⁸O. (C) ¹⁸O remains in the carbonyl oxygen only. (D) ¹⁸O remains in alcohol only. (E) ¹⁸O is found in both the carboxylic acid and the alcohol.

48. Which of the following is a suitable synthesis of o-methylphenol? (A) 2-chlorotoluene + KOH, 25 °C → 2-methylphenol (B) 2-aminotoluene + 1) NaNO₂, H₂SO₄, H₂O / 2) H₂O, heat → 2-methylphenol (C) toluene + heat, H₂O, H₂SO₄ → 2-methylphenol (D) 2-bromotoluene + 1) NaOAc, 25 °C / 2) NaOH, H₂O, heat → 2-methylphenol (E) toluene + 1) BH₃ / 2) NaOH, H₂O₂ → 2-methylphenol

50. Which of the following reactions gives the correct product? (A) A (B) B (C) C (D) D (E) E

1. Which of the following pairs of bases lists the stronger base first? (A) F⁻ ＞ Cl⁻ (B) H₂O ＞ HO⁻ (C) HO⁻ ＞ H₂N⁻ (D) CH₃COO⁻ ＞ HO⁻ (E) H₂N⁻ ＞ CH₃COO⁻

2. Triethylamine [(CH₃CH₂)₃N] is a molecule in which the nitrogen atom is ___ hybridized and the CNC bond angle is ___ (A) sp³, 109.5° (B) sp², 109.5° (C) sp², ＜ 109.5° (D) sp³, ＜ 109.5° (E) sp, 109.5°

3. Which H atom in the molecule shown will be most readily abstracted by a bromine radical? (A) Ha (B) Hb (C) Hc (D) Hd (E) He

4. Which of the following reactive intermediates can best be described as both a nucleophile and an electrophile? (A) Carbocations (B) Carbanions (C) Carbenes (D) Free radicals (E) Alkanes

5. Are the compounds shown below best described as? (A) Cis-trans isomers (B) Constitutional isomers (C) Not isomers (D) Geometrical isomers (E) None of the above

6. Which functional group below indicates the presence of two atoms connected by a triple bond? (A) Alkyne (B) Alkene (C) Nitrile (D) Ester (E) Both A and C

115年 - [無官方正解]115 國立臺灣大學_ 碩士班招生考試試題：有機化學(A)#137731

114年 - 114 台灣聯合大學系統_碩士班招生考試_化學類：有機化學#127002

113年 - 113 台灣聯合大學系統_碩士班招生考試試題_化學類：有機化學#122395

112年 - 112 台灣聯合大學系統_ 碩士班招生考試試題：有機化學#138486

112年 - 112-2 嘉南藥理大學_轉系招生藥學系考試試題_四技一年級：有機化學#119239

111年 - [無官方正解]111台灣聯合大學系統_ 碩士班招生考試試題：有機化學#138494

110年 - 110-2 嘉南藥理大學_轉系招生藥學系考試試題：有機化學#120872

110年 - 110 國立臺北科技大學_碩士班招生考試_分子科學與工程系有機高分子碩士班(甲組)：有機化學#110883

110年 - 110 國立清華大學碩士班考試入學試題_部分研究所:有機化學#104992

110年 - 110 國立清華大學碩士班考試入學試題_生命科學院/乙組(化學與生醫工程組):有機化學#104958