HCID 15020365, compound → HCID 15020366, compound

Participants

Reaction Steps

A mixture of 4-[(cyclohexyl)(4-fluorophenyl)methyl]pyridine (10.42 g, 0.039 mole), platinum oxide (1.5 g), and 10 drops of concentrated hydrochloric acid in 200 ml of glacial acetic was subjected to hydrogenation at 80° C. and 300 psi overnight, after which NMR analysis showed 50% desired product and 50% starting material. The reaction was repeated using 5% platinum on carbon at 85° C. and 1400 psi overnight. The reaction mixture was then cooled to room temperature and filtered. Solvent was removed by rotary evaporator. The oil obtained was dissolved in chloroform, and the solution was extracted with 5% sodium hydroxide and water. The chloroform layer was dried over sodium sulfate and filtered, and the solvent removed to give 9.94 g of brown oil. NMR analysis showed a 75%-25% mixture of product and starting material. The 9.94 g of oil obtained was dissolved in methanol and subjected to flash chromatography on silica gel using methanol and ammonium hydroxide-methanol for elution. Fractions of similar purity were combined and solvent removed. The clear oil obtained was dried in vacuo overnight at 80° C., to give 5.86 g (60% yield) of title compound as a clear oil.

Provenance & Evidence