Acrylic Acid → HCID 20786195, compound

Participants

Reaction Steps

To a solution of acrylic acid (2.50 g, 34.7 mmol) in dichloromethane (80 mL) at 0 degrees Celsius was added N-methyl-morpholine (4.73 g, 46.8 mmol), followed by isobutyl chloroformate (6.37 g, 46.8mmol). After 30 minutes, a solution of (2-amino-phenyl)-carbamic acid tertbutyl ester (5.80 g, 27.8 mmol) in dichloromethane (50 mL) was added dropwise to the refluxing reaction mixture over 30min. After the reaction was completed (2 hours later), the reaction mixture was allowed to cool down to room temperature, poured into ice water, and extracted with dichloromethane (30 mL×3). The organic layer was washed with water, dilute sodium bicarbonate solution, 0.1M HCl, water, and brine in turn. The organic layer was dried over sodium sulfate, filtered, and concentrated in vacuo. The crude solid was recrystallized from ethyl acetate/petroleum ether=1/4 (v/v) to obtain the desired product (2.5g, 34%). MS: calc'd 263 (MH+), exp 263 (MH+).

Provenance & Evidence