Phosphorus oxychloride → HCID 86607611, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 6-o-tolylphthalazin-1-ol (3.65 g, 15 mmol) and phosphorus oxychloride (15 mL, 161 mmol) was stirred at 110° C. for 16 h. After cooling to RT, the phosphorus oxychloride was removed in vacuo. The residue was diluted with ethyl acetate (100 mL) and washed with saturated aqueous Na2O3 and brine. The organic solution was dried over magnesium sulfate, and concentrated under reduced pressure. Flash chromatography on silica gel (ethyl acetate: hexane 60:40) gave 1-chloro-6-o-tolylphthalazine as a yellow solid. MS (ESI, pos.ion) m/z: 255.0 (M+1)

Provenance & Evidence