Synthetic Route of 609-36-9, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 609-36-9, Name is H-DL-Pro-OH, SMILES is OC(=O)C1CCCN1, belongs to amides-buliding-blocks compound. In a article, author is Henen, Morkos A., introduce new discover of the category.
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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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics