チアニン系色素の研究 (第12報)

非対称オキソノール色素並びにベンザール化合物の合成

抄録

Methineoxonol dyes were obtained by the application of formamide on barbituric and thiobarbituric acids, and anilidomethylene compounds by the application of form-anilide to these acids. Asymmetric methineoxonol dyes were obtained by the application of rhodanine or 2, 4-dioxothiazolidine to acetanilidomethylene compounds obtained by the acetylation of several kinds of anilidomethylene compounds. Application of p-dimethylaminobenzaldehyde, p-acetaminobenzaldehyde, or m-nitrobenzaldehyde to barbituric acid, thiobarbituric acid, rhodanine, pseudothiohydantoin, or 2, 4-dioxothiazolidine gave the corresponding benzal compounds.