4-Bromobiphenyl → 2-Bromo-9-(trichlorosilyl)methylfluorene

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In the same apparatus and procedures as Example 1 above, 5.0 g (21.7 mmol) of 4-bromobiphenyl and 0.08 g (11.1 mmol) of aluminum foil were alkylated in CS2 (50 ml) solution with (2,2-dichloroethyl)-trichlorosilane 6.68 g (21.7 mmol) for 24 hr. at reflux temperature. Freshly distilled hexane (100 ml) was added to the reaction mixture and insoluble solids in hexane were filtered from the organic solution. After hexane and CS2 were distilled, the reaction products were vacuum distilled to give 1.28 g of 2-bromo-9-(trichlorosilyl)methylfluorene (yield; 15%).

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