Methyl chloroformate → HCID 67992236, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of diisopropylamine (0.99 mL, 7.02 mmol) in 2-methyltetrahydrofuran (33 mL) at −5° C. was added n-BuLi (2.67 mL, 2.5 M in hexanes, 6.69 mmol) slowly. After 20 minutes, the reaction was cooled to −78° C. and aripiprazole (1.50 g, 3.34 mmol) was added. After a further 10 minutes, methylchloroformate (0.65 mL, 8.36 mmol) was added. The reaction was held at −78° C. for 2 hours before allowing to warm to room temperature. After 2 hours the reaction was quenched with saturated aqueous ammonium chloride solution (30 mL) and extracted with ethyl acetate (2×30 mL). The organics were combined, washed with saturated aqueous sodium hydrogen carbonate solution (30 mL), brine (30 mL), dried over MgSO4 and concentrated. The crude product was purified by column chromatography on silica eluting with 1:1 ethyl acetate to dichloromethane to 10% methanol in 1:1 ethyl acetate to dichloromethane to give the product. The product was triturated in heptane to remove aliphatic impurities and then filtered to afford Compound-74 (0.824 g) as a colorless solid.

Provenance & Evidence