Toluene → 3-methoxy-6-phenylpyridazine

Participants

Reaction Conditions

Reaction Steps

A mixture of 3.0 g of 3-chloro-6-methoxypyridazine, 3.8 g of phenylboric acid, 2.4 g of tetrakis(triphenylphosphine)palladium(0), 160 ml of toluene, 40 ml of methanol, 80 ml of an aqueous 2 mol sodium carbonate solution and 30 ml of tetrahydrofuran was stirred under heating at 85° C. for one hour. After cooling as it was, the reaction solution was extracted with ethyl acetate. The organic phase was washed with brine and eluted with ethyl acetate through NH-silica gel (Fuji Silicia). After removing the solvent, the residue was crystallized, to give 1.8 g of the target compound.

Provenance & Evidence