Triethylamine → 1-(triphenylmethyl)-1H-Imidazole-4-acetic acid methyl ester

Participants

Reaction Steps

To a solution of methyl 4-imidazoleacetate hydrochloride, as described above in Step A, (4.30 g, 24.3 mmol) in dry DMF (50 mL) were added triethylamine (7.45 mL, 53.5 mmol), then triphenylmethyl bromide (8.64 g, 26.7 mmol). The mixture was stirred at ambient temperature for 18 hours, then partitioned between H2O (250 mL) and EtOAc (250 mL). The organic layer was dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography on silica, eluting with EtOAc, to yield the product as a pale solid.

Provenance & Evidence