The meso carbon atom of the methine linkage of the dye is attached to the nitrogen atom of a group which forms an enamine with the methine linkage of the dye.

该染料上的碳原子与氨基的原子相连，而该原子又与染料的形成烯胺。

The syntheses of two new derivatives of 4 - pyrone, by the reaction of adipyl choloride with enamines deriving from chain ketones and aldehydes, are described.

本文醛酮的烯胺与己二酰氯反应合成两个新的4-吡喃酮衍生物。