1-Phenyl-1-propanone → HCID 66625783, compound

Participants

Reaction Steps

To a stirred solution of (1-trityl-1H-imidazol-4-ylmethyl)-phosphonic acid diethyl ester (1.24 g; CAS 473659-21-1) at room temperature (r.t.) in THF (20 ml) under an argon atmosphere was added potassium tert-butylate (301 mg). After 15 minutes stirring at room temperature, propiophenone (0.3 ml) was added in one portion. The mixture was heated to 80° C. and stirring at that temperature was continued for 2 days. The compact suspension was cooled to r.t. and the solid was filtered off and washed with THF. The filtrate was concentrated to leave a dark violet viscous oil. This was taken up in ethyl acetate (EtOAc) and washed with brine. The aqueous phase was back extracted with EtOAc. The combined organics were washed with brine, dried over MgSO4, filtered and concentrated. The crude product was purified by column chromatography (silica gel; gradient cyclohexane→cyclohexane/EtOAc 3:2) to give 4-(2-phenyl-but-1-enyl)-1-trityl-1H-imidazole (269 mg; not completely pure) as an off-white solid. MS (ISP): 243.2 ([Trt]+)

Provenance & Evidence