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

Participants

Reaction Steps

To a suspension of the product from Step A (7.49 g, 42.4 mmol) in methylene chloride (200 ml) was added triethylamine (17.7 ml, 127 mmol) and triphenylmethyl bromide(16.4 g, 50.8 mmol) and stirred for 72 h. After this time, the reaction mixture was washed with sat. aq. NaHCO3 (100 ml) and water (100 ml). The organic layer was evaporated in vacuo and the residue was purified by flash chromatography(30-100% ethyl acetate in hexanes gradient elution) to provide the title compound as a white solid. 1H NMR(CDCl3, 400 MHz) δ 7.35(1H, s), 7.31(9H, m), 7.22(6H, m), 6.76(1H, s), 3.68(3H, s) and 3.60(2H, s) ppm.

Provenance & Evidence