反应详情

A mixture of 4-(6-aminomethylpyridin-2-yl)-2-(diaminomethyleneamino)thiazole (0.50 g) and dimethyl N-cyanodithioiminocarbonate [(CH3S)2C=N--CN] (0.29 g) in ethanol (10 ml) was refluxed for one hour to give 2-(diaminomethyleneamino)-4-[6-(3-cyano-2-methylisothioureido)methylpyridin-2-yl]thiazole of a crude product. After being concentrated to dry the above product, 40 weight % methanolic methylamine (1.6 ml) and N,N-dimethylformamide (10 ml) was added and the mixture was stirred at 60° C. for 5 hours. The solvent was evaporated in vacuo and the residue was mixed with water. The resulting precipitate was collected by filtration and recrystallized from aqueous N,N-dimethylformamide to give 4-[6-(2-cyano-3-methylguanidino)methylpyridin-2-yl]-2-(diaminomethyleneamino)thiazole (0.42 g).

1. temperaturewas refluxed for one hour