Conversion of Benzene to 9-Bromo 9,10 Dihydroanthracene
What you are looking for is known as the Wurtz-Fittig reaction - wikipedia article , JACS paper
In this proposed reaction I think you will get a complex mixture (also known as a mess), but you may be able to find some of your desired product in it. Good luck with trying to isolate it cleanly!
If you want a straightforward preparative route then look at the F-C reaction of phthalic anhydride with benzene, the reduction of the resulting 2-benzoyl benzoic acid to 2-benzyl benzoic acid and cyclisation with polyphosphoric acid. This product can be reduced to the dihydroanthracene by Zn/HCl