N-{[5-(2-chloroacetyl)furan-2-yl]methyl}acetamide → 4-(5-Acetylaminomethylfuran-2-yl)-2-(diaminomethyleneamino)thiazole

関与物質

反応手順

A solution of 5-acetylaminomethyl-2-chloroacetylfuran (39.9 g) and diaminomethylenethiourea (21.9 g) in ethanol (400 ml) was refluxed for two hours with stirring. The solvent was evaporated in vacuo and the residue was dissolved in water (300 ml). The solution was basified with an aqueous potassium carbonate. The resulting precipitate was collected by filtration, washed with water and recrystallized from a mixture of methanol, tetrahydrofuran and diisopropyl ether to afford 4-(5-acetylaminomethylfuran-2-yl)-2-(diaminomethyleneamino)thiazole (24.1 g).

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