Potassium Hydroxide → HCID 12982931, compound

Participants

Reaction Steps

To a suspension of 0.5 g of 2,7,9,9-tetrakis(trimethylsilyl)-fluorene in 15 mL of 95% ethanol was added 1.5 mL of 10% KOH. The mixture was refluxed for 2 hours and cooled in an ice bath for one hour. The precipitated crystals were removed by filtration, rinsed with water (2×5 mL), dried in air, and recrystallized from methanol to give 0.32 g (93.8%) of pure 2,7-bis(trimethylsilyl)fluorene as colorless crystals, m.p. 117°-118° C.; 1H NMR (CDCl3): δ 0.31 (s, 18H, SiMe3), 3.90 (s, 2H, CH2), 7.20-7.90 (m, 6H, aryl).

Provenance & Evidence