反应详情

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%).

1. customThe solvent was removed
2. extractionthe residue was extracted into CH2Cl2 (ca. 75 mL)
3. filtrationfiltered
4. customthe solvent removed
5. customgiving a white powder which
6. washwas washed with pentane (ca 50 mL)
7. customdried under vacuum