53. Which of the following would undergo racemization in base? C6H5CC6H5 I CH3 O CH3CH2C -CC6H5 CH3CH2CH2 II H CH3 =0 CH3CH2C -CC6H5 CH3C -CCH2C6H5 CH3 CH3 III IV A) I B) II C) III D) IV E) Both III and IV Ans: 54. Which of the following would undergo racemization in base? C6H5CC6H5 I CH3 CH3CH2C -CC6H5 CH3CH2CH2 II H CH3 O CH3CH2C. CC6H5 CH3C CCH2C6H5 CH3 CH3 III IV II C) III D) IV E) A) B) IL Both III and IV Ans: Practice 15.1: Write the general equation for an electrophili... Q 15.113: Select all answer choices that correctly describe the typical reactions of benzene. A The aromatic moiety is preserved. B Benzene reacts with bromine in the absence of a catalyst C One of the aromatic protons is replaced by an electrophile. D Benzene undergoes electrophilic addition reactions.