Sodium Sulfate → HCID 67205372, compound

Participants

Reaction Steps

rac-N-[(1S*,2R*)-2-Amino-1,2-bis-(4-chloro-phenyl)-1-methyl-propyl]-6-tert-butyl-4-ethoxy-nicotinamide (200 mg, 0.4 mmol) was dissolved in toluene (8 mL) and phosphorus oxychloride (0.2 mL, 0.83 mmol) was added. The reaction mixture was refluxed under nitrogen overnight. It was allowed to cool to room temperature and poured into ice water, basified with saturated solution of sodium sulfate (10 mL). Reaction mixture was extracted with ethyl acetate (2×20 ml) and methylene chloride (2×10 mL). The combined organic layers were washed with brine and water, dried with magnesium sulfate, filtered and evaporated. Purification was by chromatography (silica gel, eluting with 0-30% ethyl acetate/methylene chloride, then 5% methanol/methylene chloride) to give rac-5-[(4S*,5R*)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-1H-imidazol-2-yl]-2-tert-butyl-4-ethoxy-pyridine as a solid. (20 mg). LR-MS: 496 [(M+H)+]

Provenance & Evidence