Water → tert-butyl (Z)-4-[4-(methoxycarbonyl)-2-(prop-1-en-1-yl)phenyl]piperazine-1-carboxylate

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Reaction Conditions

Reaction Steps

tert-Butyl 4-(2-iodo-4-(methoxycarbonyl)phenyl)piperazine-1-carboxylate (127 mg, 0.285 mmol) was dissolved in N,N-dimethylformamide:water=3:1 (2.8 mL). At room temperature, (Z)-propenylboronic acid (59 mg, 0.684 mmol), tetrakistriphenylphosphine palladium (16 mg, 0.0143 mmol) and sodium carbonate (121 mg, 1.14 mmol) were added sequentially, and the mixture was stirred at 80° C. for 1 hour, under microwave irradiation. The reaction solution was extracted with ethyl acetate. The organic layer was washed with brine, dried over anhydrous sodium sulfate, and concentrated in vacuo. The obtained residue was purified by silica-gel column chromatography (hexane/acetone). The title compound (96 mg (yield 94%)) was obtained as a yellow crystal.

Provenance & Evidence