4-Methoxynaphthalen-1-ylmethylamine → 4-Chloro-5-(4-methoxy-1-naphthylmethylamino)-3(2H)pyridazinone

関与物質

反応手順

A mixture comprising 330 mg of 4,5-dichloro-3(2H)pyridazinone, 1.12 g of 4-methoxy-1-naphthylmethylamine and 30 ml of ethanol, was refluxed under stirring overnight. The solvent was evaporated under reduced pressure, and a mixture of ethyl acetate and ethyl ether was poured to the residue, whereupon precipitated crystals were collected by filtration. The product was recrystallized from a mixture of methanol/water to obtain 410 mg of the above identified command as slightly yellow crystals having a melting point of from 265° to 266° C.

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