メラミン誘導体に関する研究(第11報) : N-(2-オキシ-3(または4,5)-メチルベンゾイル)メラミン類の合成およびその染料への応用

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Acetyl-o (or m, p)-cresotic anhydrides were synthesized in good yield from the corresponding acetylcresotic acids and thionyl chloride in the presence of pyridine. Mixtures of melamine and acetylcresotic anhydrides dissolved in dioxane were heated to reflux to obtain N-(2-acetoxy-x-methylbenzoyl)melamines (x: 3, (1) ; 4, (4); 5, (7)). The corresponding N, N-diacylmelamines were formed as by-products as identified in the forms of hydroxy derivatives (x: 3, (3); 4, (6) ; 5, (9)). Upon hydrolysis with 10% aqueous pyridine, (1), (4), and (7) gave the corresponding hydroxy derivatives ((2), (5), and (8)). Acetylcresotic anhydrides and the melamine derivatives ((1)-(9)) are new compounds not found in the literatures. Azo dyes were synthesized using (2), (3), (5), and (8) as coupling components, and the dyeingabilities of their methylol compounds for cotton and rayon investigated.
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