Friedel-Crafts cycloalkylation of biphenyl with 2,3-dichlorobutyltrichlorosilane(Cl3Si-CH2CHClCHClCH3) at a temperature of 100°C in the presence of anhydrous aluminum chloride catalyst gave cyclized product, 9methyl-9-(2-trichlorosilylethyl)fluorene 1a, in 33% yield. Methylation of 1a with nucleophilic reagent such as methyl magnesium chloride, gave 9-methyl-9-(2-trimethylsilylethyl)fluorene 2 while bromination of 2 with excess amount of bromine in DMF resulted in 2,7-dibromo-9-methyl-9-(2-trichlorosilyl)fluorene 3 in good yield. All the compounds were structurally identified by GC/MS, 1 H and 13 C-NMR spectroscopy.