Acetic acid, 2-(4-formylphenoxy)- → 2-(4-Carboxymethoxy-phenyl)-1-cyclohexyl-1H-benzoimidazole-5-carboxylic Acid Ethyl Ester

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Reaction Steps

Following the procedure of example 1, ethyl 3-amino-4-(aminocyclohexyl)benzoate (1.077 g, 4.1 mmol) and 4-formylphenoxyacetic acid (0.748 g, 4.15 mmol) were dissolved in a mixture of DMF (8 mL) and water (0.5 mL). Oxone® (0.7 equivalent, 2.87 mmol, 1.764 g) was added and the mixture stirred for 30 min at room temperature (HPLC complete). Water was added to precipitate the product, which was collected by filtration, washed with water and dried (1.130 g, 65% yield, brown solid).

Provenance & Evidence