4-Aminophenol → HCID 22641092, compound

Participants

Reaction Steps

A solution of 250 mg (0.63 mmol) of 4-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-2-naphthylselanylethynyl)benzoic acid obtained in Example 5, 169 mg (1.25 mmol) of 1-hydroxybenzotriazole, 240 mg (1.25 mmol) of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide (EDC) and 82 mg (0.75 mmol) of 4-aminophenol in 20 ml of THF is stirred at room temperature for 15 h. Water and ethyl acetate are then added. After stirring and separation of the phases by settling, the aqueous phase is extracted with ethyl acetate. The organic phases are then combined and washed with water, dried over magnesium sulphate and concentrated on a rotary evaporator under vacuum at 40° C. The product is purified on a column of silica (ethyl acetate 20/heptane 80). 200 mg (65%) of a white solid are obtained. m.p.=202° C.

Provenance & Evidence