Which Is the Best Reaction Sequence to Synthesize P-Bromobenzenesulfonic Acid

question 3

Multiple Choice

Which is the best reaction sequence to synthesize p-bromobenzenesulfonic acid from benzene?

• A) 1) Br₂, AlBr₃, 2) H₂SO₄, SO₃
• B) 1) H₂SO₄, SO₃, 2) Br₂, AlBr₃
• C) 1) CH₃Cl, AlCl₃, 2) Br₂, AlBr₃
• D) 1) Br₂, AlBr₃, 2) CH₃COCl, AlCl₃
• E) 1) HBr, ethane, 2) H₂SO₄, SO₃

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