9,9-Dichloro-9-silafluorene → 5H-benzo[b][1]benzosilole

Participants

Reaction Steps

Solid 2-Methylindenyl lithium (3.34 g, 24.52 mmol) was added to a stirred solution of 9,9-Dichloro,9-silafluorene (3.08 g, 12.26 mmol) in Et2O (ca. 25 mL) and the resultant mixture was stirred at room temperature for 2 hours. The solvent was removed and the residue was extracted into CH2Cl2 (ca. 75 mL), filtered and the solvent removed giving a white powder which was washed with pentane (ca. 50 mL) and dried under vacuum leaving 9-Silafluorene, 9,9-bis-2-Methylindene as a white powder (3.80 g, 71%).

Provenance & Evidence