Phosphorus oxybromide → HCID 68896885, compound

Participants

Reaction Steps

2-[4-(2-Methyl-propane-2-sulfonyl)-phenyl]-2,3-dihydro-phthalazine-1,4-dione (0.20 g, 0.56 mmol) and phosphorus oxybromide (0.48 g, 1.7 mmol) were stirred at 150° C. for 1 h. H2O (50 ml) was added after cooling to room temperature. Extraction with dichloromethane, drying of the combined organic phases over Na2SO4, evaporation of the solvent and purification of the raw product by preparative HPLC yielded the desired compound (0.06 g, 18%). 1H-NMR: (400 MHz, D6-DMSO) 8.41 (1H, d), 8.07 (1H, d), 8.03–8.10 (4H, m), 7.80 (2H, d), 1.30 (9H, s); MS (API+)=423.0 (M+H)+.

Provenance & Evidence