Which of the following undergoes the most rapid acylation upon treatment with acetyl chloride and AlCl₃? A) benzene B) toluene C) chlorobenzene D) 1,4-dichlorobenzene

Question

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Toluene undergoes the most rapid acylation due to the presence of the methyl group, which is an electron-donating group. This increases the electron density on the benzene ring, making it more reactive towards electrophilic aromatic substitution reactions like acylation.

Which of the Following Undergoes the Most Rapid Acylation Upon