Aseries of previously unreported N -aryl-7-hydroxy-2-imino-2 H -chromene-3-carboxamides were synthesized via the reaction of 2,4-dihydroxybenzaldehyde with cyanoacetic acid arylamides in the presence of a catalyst. The structures of the obtained compounds were confirmed by spectroscopic techniques. Biological tests showed that some of these compounds exhibited antimicrobial activity.

中文翻译：

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N-Aryl-7-Hydroxy-2-Imino-2H-Chromene-3-Carboxamides 的合成、性质和抗菌活性

在催化剂存在下，通过 2,4-二羟基苯甲醛与氰基乙酸芳基酰胺的反应合成了一系列以前未报道的 N-芳基-7-羟基-2-亚氨基-2 H-色烯-3-甲酰胺。所得化合物的结构通过光谱技术确认。生物测试表明，这些化合物中的一些表现出抗微生物活性。