Hexane → HCID 57519013, compound

Participants

Reaction Steps

t-Butyl N-[1-(4-benzyloxyphenyl)-3-cyanopropyl]-N-methylcarbamate (1.00 g, 2.6 mmol) obtained from Example 115c was dissolved in dichloromethane (20 ml) under an atmosphere of nitrogen. To the solution was added 0.95 M solution of diisobutylaluminum hydride in hexane (5.5 ml, 5.3 mmol) at −78° C. and the temperature was slowly raised to room temperature and then the mixture was stirred at room temperature for 2 hours. To the resulting mixture was added sodium sulfate (2.6 g) and this mixture was stirred at room temperature for 1 hour. The reaction mixture was filtered and the filtrate was concentrated under reduced pressure. The residue was dissolved in methanol (10 ml) and to the solution was slowly added sodium borohydride (98 mg, 2.6 mmol). The resulting mixture was stirred at room temperature for 1 hour. Water was added to the reaction mixture and the methanol was evaporated under reduced pressure. The aqueous layer was extracted with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using hexane:ethyl acetate=70:30 to 50:50 as the eluent to afford the desired compound (830 mg).

Provenance & Evidence