Acetone → HCID 10367750, compound

Participants

Reaction Steps

(S)-2-Amino-1-{4-[bis-(4-fluoro-phenyl)-methyl]-piperazin-1-yl}-3-phenyl-propan-1-one (0.500 g, 1.15 mmol, Example 52) and acetone (0.084 mL, 1.15 mmol) were mixed in CH2Cl2 (6 mL). After stirring at ambient temperature under nitrogen atmosphere for 30 minutes, the solution was cooled to 0° C. in an ice-water bath. To this solution was added sodium triacetoxyborohydride (0.365 g, 1.72 mmol). The resulting reaction mixture was stirred for, in succession, 30 minutes at 0° C. and 12 hours at ambient temperature. Twenty milliliters of saturated aqueous NaHCO3 solution was added to the reaction mixture, and the resulting mixture was stirred for 5 minutes. The two layers were separated and the aqueous layer was extracted with CH2Cl2 (2×20 mL). The combined organic solution was dried over Na2SO4. The solution was concentrated in vacuo affording a viscous oil. The crude product was purified by flash chromatography (1% MeOH in EtOAc) affording 460 mg (83%) of the pure titled compound as a white foam: mp 45-58° C. APCI-MS m/z 478.4 (MH+).

Provenance & Evidence