Dimethyl malonate → 1,3-Dimethyl 2-(4-bromo-2-nitrophenyl)propanedioate

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a suspension of NaH (60% in mineral oil, 972 mg, 24.3 mmol) in DMSO (16 mL) is added dimethyl malonate (2.78 mL, 24.3 mmol). The mixture is heated at 60° C. for 10 min and then is cooled to room temperature before 4-bromo-1-fluoro-2-nitro-benzene (1.0 mL, 8.1 mmol) is added. The resulting mixture is heated at 60° C. for 3 hr and then is quenched with saturated aqueous NH4Cl solution. The mixture is extracted with EtOAc, washed with brine, dried over MgSO4, and concentrated. The crude is used without further purification.

Herkunft & Nachweise