Devise a series of reactions to convert benzene into meta-chlorobromobenzene. Select reagents and conditions from the following table, listing them in order of use.
A
1 then 2 then 6
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B
2 then 8 then 4 then 3 then 9
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C
8 then 4 then 10 then 2 then 3 then 9
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D
8 then 2 then 4 then 3 then 9
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Solution
The correct option is B 8 then 2 then 4 then 3 then 9 Here nitro group is meta director so in second step chlorine is attached to third carbon. Rest of the reaction takes place as shown above.