Dichlorodiphenylsilane → 9-(CHLORODIPHENYLSILYL)-9H-FLUORENE

Participants

Reaction Conditions

Reaction Steps

80 g (0.48 mol) of fluorine and 160 ml of toluene/12.8 ml (0.12 mol) of dimethoxyethane (DME) were placed in a reaction vessel and admixed with 182 ml (0.48 mo) of a 20% strength solution of butyllithium in toluene. The suspension was stirred for another 2 hours at 50° C. The suspension was diluted with 400 ml of heptane, cooled to −30° C. and added to a solution, cooled to −30° C., of 182 g (0.72 mol) of diphenyldichlorosilane in 400 ml of heptane. After stirring for 1.5 hours at room temperature, the suspension was heated to 60° C. and the lithium chloride was filtered off. After removal of the solvent, the solid which precipitated was suspended in heptane, filtered off, washed with heptane until virtually colorless and dried under reduced pressure. 123 g (66%) of 2a were obtained.

Provenance & Evidence