数字农科院2.0

Reactions Of 2-Aminobenzohydrazide And 4-Oxo P.imelic Acid Catalyzed By I odine In Ionic Liquids

文献类型： 外文期刊

作者： Yue Ruixue;Zhang Yi;Zhang Wenting;Zhu Hong;Sun Jian;Niu Fuxiang;Xu Fei

作者机构：

关键词： 2-aminobenzohydrazide; 4-oxopimelic acid; pyridazino[6,1-b] pyrrolo[1,2-a] quinazoline-1,6,9(7H)-trione; tetra-hydropyrrolo[1,2-a] quinazolin-3a(1H)-propionic acid; ionic liquid; steric hindrance

期刊名称： CHINESE JOURNAL OF ORGANIC CHEMISTRY

ISSN： 0253-2786

年卷期： 2017 年 37 卷 12 期

页码：

摘要： The reactions between 2-aminobenzohydrazide and 4-oxopimelic acid catalyzed by iodine using ionic liquids as green solvents were studied. The results showed that when there was no substituents on N atoms attached to amide group of the hydrazide, it will successfully constructed three new rings and formed pyridazinoq[6,1-b] pyrroloq[1,2-a] quinazoline-1,6,9(7H)trione derivatives. The structure of 2,3,4,5-tetrahydro-1H, 9H-pyridazinoq[6,1-b] pyrroloq[1,2-a] quinazoline-1,6,9(7H)-trione (3a) was confirmed by X-ray diffraction analysis. However, when the substituents were aryl groups, the pyridazine ring did not closed as expected due to the steric hindrance, and gave tetrahydropyrroloq[1,2-a] quinazolin-3a(1H))-propionic acid derivatives. The advantages of this approach were the simplicity of the synthesis route, environmental protection, easy operation and high efficiency.

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