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In a flask were placed 5.0 g (0.032 mole) of 4,4-dimethyl-4-silapentanoic acid chloride and 2.89 g (0.032 mole) of copper(I) cyanide. This mixture was heated at approximately 150°-200° C. for a period of 50 minutes after which it was cooled to ambient temperature. Methylene chloride was added to the reaction mixture which was then filtered. The solvent was evaporated from the filtrate under reduced pressure, leaving 1.5 g of 4,4-dimethyl-4-silapentanoyl cyanide as a residue.

1. customIn a flask were placed
2. temperatureThis mixture was heated at approximately 150°-200° C. for a period of 50 minutes after which it
3. filtrationwas then filtered
4. customThe solvent was evaporated from the filtrate under reduced pressure