2-Cyanoethyl 3-aminocrotonate → HCID 69063213, compound

Participants

Reaction Conditions

Reaction Steps

1.66 g (3.88 mmol) of 4-[2-acetyl-3-(3,5-dichlorophenyl)-2-propenoyl] piperazine-1-carboxylic acid t-butyl ester and 598 mg (3.88 mmol) of 3-aminocrotonate 2-cyanoethyl ester were stirred in 30 ml of 2-propanol at 80° C. overnight and then stirred at 120° C. for 2 hours. After concentration under reduced pressure, ethyl acetate was added and the residue was washed with saturated aqueous sodium chloride solution. The organic layer was dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was purified by the silica gel chromatography (dichloromethane/methanol =100/1 to 30/1) to obtain the title compound.

Provenance & Evidence