Acetic Acid → 4-[3-(3-Cyanophenyl)-1-(4-cyclohexylphenyl)ureidomethyl]-N-(2H-tetrazol-5-yl)benzamide

Participants

Reaction Conditions

Reaction Steps

The above resin bound 4-formyl-N-(2H-tetrazol-5-yl)benzamide (50 mg) was treated with a 0.5 M solution of 4-cyclohexylaniline (0.25 mmol, 41.25 mg) in a mixture of DMF and trimethylorthoformate (1:1, 0.5 mL) and glacial acetic acid (50 μL) for 1 hour at 25° C. followed by sodium cyanoborohydride (250 μmol, 16 mg) dissolved in a mixture of DMF and methanol (1:1, 0.25 mL). Shaking at 25° C. for 4 hours followed by filtration and washing with a mixture of DMF and methanol (1:1, 2×1 mL), 3×1 mL DMF and 2×1 mL dichloromethane afforded the desired product.

Provenance & Evidence