Question

71. Which set of reagents would synthesize m-bromobenzoic acid from benzene? um benzene? F E D a) CH3CI, AICI3; Br2 FeBrz: K2 why is the answer D and not A? can someone draw this out and explain for me? i thought the K2CrO7 would not affect the Br? thank you so much!
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Answer #1

Option (d) is correct.

In option A. First benzene reacts with CH3Cl/AlCl3. So toluene(means CH3 attached to benzene) formed. But after Br2/FeBr3 it attached to CH3 not benzene. That's why first we have to oxidized it into COOH group. And As COOH is meta directing so Br attached at meta position

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