HCID 16113326, compound → HCID 52948201, compound

Participants

Reaction Steps

A racemic mixture of 2-amino-5-{3-[(4,4-difluorobut-3-en-1-yl)oxy]-4-fluorophenyl}-5-[4-(difluoromethoxy)phenyl]-3-methyl-3,5-dihydro-4H-imidazol-4-one (preparation described in previous Example) was separated by chiral HPLC using column type Chiralcel AD, 5×50 cm; the mobile phase was 15% ethanol in hexane with 0.1% diethylamine at 100 mL/min to obtain the title R-isomer as a glass, identified by NMR and mass spectral analyses [mp glass; [α]D25=−14° (c=1%, MeOH); MS (ES) m/z 454.0].

Provenance & Evidence