New 4-oxo-2-vinyl-4H-chromene-3-carbonitrile derivatives have been synthesized by the Knoevenagel reaction of 2-methyl-4-oxo-4H-chromene-3-carbonitrile with aromatic and heteroaromatic aldehydes. Spectral properties of the obtained compounds have been studied.

中文翻译：

---

通过Knoevenagel反应合成不对称的4-氧代-2-乙烯基-4H-亚甲基-3-腈

通过2-甲基-4-氧代-4H-色烯-3-腈与芳香族和杂芳族醛的Knoevenagel反应合成了新的4-氧代-2-乙烯基-4H-色烯-3-腈。已经研究了所得化合物的光谱性质。