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 2hours. 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