Which method would work the best in accomplishing the following transformation? A)[1] HBr; [2] 2eq.NaNH₂ B)[1] Br₂; [2] 2eq.NaNH₂ C)[1] Br₂,H₂O; [2] NaNH₂ D)[1]BH₃,THF; [2] H₂O₂,NaOH; [3] NaNH₂

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The transformation involves replacing a group with Br and converting a sulfone group into a sulfoxide. The best method for this is to first use Br₂ to replace the other substituent with Br. Then, 2eq of NaNH₂ can be used to convert the sulfone group into a sulfoxide. Option A is not ideal because HBr is not a strong enough acid to react with the basic sulfone group. Option C involves two different reaction conditions which is unnecessary. Option D is too complex with three different steps involving two different reagents.

Which Method Would Work the Best in Accomplishing the Following