(S)-1-(3-bromo-4-fluorophenyl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethanamine → (R)-1-(4-fluoro-3-isobutylphenyl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethanamine

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene](3-chloropyridyl)palladium(II) dichloride (8 mg, 0.01 mmol) in NMP (0.5 mL) was added isobutylzinc(II) bromide in THF (0.5 M, 0.7 mL, 0.35 mmol) followed by (S)-1-(3-bromo-4-fluorophenyl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethanamine, prepared as described Procedure 62, 5 and 6, (50 mg, 0.11 mmol) in anhydrous THF. The reaction mixture was heated at 75° C. overnight. The reaction mixture was diluted with EtOAc and the organic layer was washed with sat. NH4Cl, dried over Na2SO4 and concentrated to yield (R)-1-(4-fluoro-3-isobutylphenyl)-1-(3-fluoro-5-(trifluoromethyl)phenyl)-2-phenylethanamine. LCMS: RT=3.62 min [M−NH2] 417 (Waters Sunfire-S5-C18 4.6×50 mm, eluting with 10-90% MeOH/H2O over 4 minutes containing 0.1% TFA; 4 mL/min, monitoring at 220 nm).

Herkunft & Nachweise