39. What is the major product of the following reaction?
(A)
(B)
(C)
(D) 

40. Provide the reagents necessary to complete the following transformation. (A) 1. BH3∙THF 2. H2O2, HO- (B) H2O, H2SO4 (C) OsO4, H2O2 (D) CH3CO3H

41. Which of the following reagents will convert 1 mole of 3-methylpent-1-yne into 3-methylpentane?(A) 1 mole of Br2 in CCl4 (B) 2 moles of Cl2 in CCl4 (C) 2 moles of HCl (D) 2 moles H2, Ni and heat

42. Which of the following reagents should be used to convert  hex-3-yne to (Z)-hex-3-ene?(A) H2, Pt(B) Na, NH3(C) H2, Lindlar's catalyst (D) H2SO4, H2O

43. Which of the following statements correctly pertains to a pair of enantiomers? (A) They rotate the plane of polarized light by exactly the same amount and in opposite directions. (B) They rotate the plane of polarized light by differing amounts and in opposite directions. (C) They rotate the plane of polarized light by differing amounts and in the same direction. (D) The have different melting points. 

44. Predict the specific rotation of the compound shown. (A) It is impossible to predict； it must be determined experimentally. (B) Because both asymmetric centers are R, the compound is dextrorotatory. (C) Because both asymmetric centers are S, the compound is levorotatory. (D) Zero； the compound is achiral.

45. What is the major difference between an antiaromatic and aromatic compound? (A) Only aromatic compounds follow Huckle's rule. (B) Antiaromatic compounds have at least one sp3 hybridized atom in the ring. (C) Antiaromatic compounds can assume a chair-like structure while aromatic compounds are nearly flat. (D) Aromatic compounds cannot have a charged atom in the structure.

46. Which of the following is an incorrect statement about the bromination of benzene by Br2 and FeBr3? (A) FeBr3 functions to increase the electrophilicity of Br2. (B) Formation of the sigma complex is the rate-determining step of the mechanism. (C) The carbanionic intermediate is resonance stabilized. (D) There is one carbon-containing intermediates in the mechanism.

47. Which of the following species is attacked by benzene in the electrophilic nitration reaction? (A) HNO3(B) NO2⁺ (C) NO2(D) NO⁺

48. Which of the following compounds will not undergo Friedel-Crafts acylation when treated with  CH3CH2COCl, AIC13?(A) toluene(B) p-xylene(C) benzophenone(D) ethoxybenzene

49. Which series of reagents would be required to perform the following synthesis? (A) 1. ClCH2CH2CH3, AlCl3 2. FeBr3, Br2 (B) 1. ClCOCH2CH3, AlCl3 2. FeBr3, Br2 (C) 1. ClCOCH2CH3, AlCl3 2. FeBr3, Br2 3. Zn(Hg), HCl (D) 1. ClCOCH2CH3, AlCl3 2. Zn(Hg), HCl 3. FeBr3, Br2

115年 - [無官方正解]115 台灣聯合大學系統_碩士班招生考試_化學類：有機化學#140181

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