3-Ethylphenyl isocyanate → 2-[4-({[(3-ethylphenyl)amino]carbonyl}amino)phenyl]-1H-indole-1-carboxamide

Participants

Reaction Steps

The reaction mixture of 2-(4-amino-phenyl)-indole-1-carboxylic acid amide (125.5 mg, 0.5 mmol, 1 eq) and 3-ethylphenyl isocyanate (0.073 mL, 1 eq) in anhydrous THF (4 mL) was stirred at room temperature for 2 hours. It was then diluted with ethyl acetate, washed sequentially with aqueous NH4Cl, saturated aqueous NaHCO3, brine, and dried with anhydrous sodium sulfate. The upper liquor was decanted, concentrated, and the solid residue was triturated with EtOAC-Hex (1:1). 2-[4-({[(3-ethylphenyl)amino]carbonyl}amino)phenyl]-1H-indole-1-carboxamide was obtained as white solid upon filtration in amount of 156 mg (78%).

Provenance & Evidence