4-Bromopyridinium chloride → HCID 18332458, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of 5-ethynyl-6-methoxy-2H-phthalazin-1-one (1.9 g, 9.49 mmoles), prepared as described in example 140, 4-bromopyridine hydrochloride (2.214 g, 11.39 mmoles), bis(triphenylphosphine)PdCl2 (133 mg, 0.1998 mmole) and CuI (36 mg, 0.1898 mmole) in diethylamine (40 ml) was heated at 75° C. for 1 hour, cooled, diluted with water (40 ml) and the solid was filtered after 30 minutes under stirring. The solid was suspended in acetone, stirred for 15 minutes, filtered again and dried in oven at 45° C. under vacuum giving 2.263 g of the title compound (yield: 86%).

Provenance & Evidence