HCID 23518554, compound → HCID 23518590, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 9.0 g (20.5 mmol) of 2-bromo-3-(3-t-butyldimethylsiloxypropyl)-5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalene in 70 mL of N-methyl pyrollidine was added 7.36 g (82 mmol) of copper (I) cyanide and the reaction mixture was heated to 175° C. After 16 hours the reaction mixture was cooled to room temperature and diluted with 10% aqueous ammonium hydroxide. The resulting salts were removed by filtration and washed with hot ethyl acetate. The filtrate was extracted with ethyl acetate and the combined organic fractions were washed with brine, dried over sodium sulfate and concentrated under reduced pressure. The residue was purified by flash chromatography on silica gel (gradient elution: 3-25% ethyl acetate/hexane) to give 4.8 g (61%) of 2-cyano-3-(3-t-butyldimethylsiloxypropyl)-5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalene.

Provenance & Evidence