Sodium Carbonate → 1-(4-Hydroxyphenyl)-3-(4-phenoxyphenyl)-1,3-dihydroimidazol-2-one

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Reaction Steps

A solution of 3-(4-benzyloxyphenyl)-1-(2,2-dimethoxyethyl)-1-(4-phenoxy-phenyl)urea (498 mg) in trifluoroacetic acid (5 ml) was left to stand for 3 days and then neutralized with saturated sodium carbonate solution. The mixture was extracted with ethyl acetate. The organic phase was dried over magnesium sulfate and concentrated, and the residue was purified by chromatography on silica gel (eluent: dichloromethane/methanol 9:1). The product with the molecular weight of 434.50 (C28H22N2O3); MS (ESI): 435 ([M+H]+), was obtained in this way. 1-(4-Hydroxyphenyl)-3-(4-phenoxy-phenyl)-1,3-dihydroimidazol-2-one was obtained as a further product.

Provenance & Evidence