Potassium Hydroxide → HCID 86748951, compound

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Reaction Steps

The impure sym-1,4-dimethyl-1,4-dimethoxy-1,4-disilacyclohexadiene is next reacted with potassium hydroxide dissolved in a methanol/water solution by slowly adding the silane to the KOH solution. The solution is then filtered and vacuum dried to remove most of the solvent. Tetrahydrofuran is then added, causing a precipitate to form. The precipitate is next filtered and washed with tetrahydrofuran and ether, and then recrystallized from isopropanol. A final wash of the solids with isopropanol and pentane gives pure 1,4-dimethyl- 1,4-disilacyclohexadiene- 1,4-di (potassium silanoate ). The 1,4-dimethyl-1,4-disilacyclohexadiene-,4-di(potassium silanoate) is next dissolved in ethanol. Concentrated hydrochloric acid is added to the solution, causing potassium chloride to precipitate out. Water and methylene chloride are then added to the solution, dissolving the potassium chloride and forming a two phase mixture. The organic phase is then decanted from the mixture. Upon evaporation of the methylene chloride at ambient temperature, an elastomer results. This elastomer is the new compound poly-1,4-oxo1,4-dimethyl- 1,4-disilacyclohexadiene.

Provenance & Evidence