Synthesis of Substituted 1,2-Dihydropyridines by the Reaction of (Ethoxymethylidene)cyanoacetic Ester and Arylamides of Acetoacetic Acid
- Authors: Hayotsyan S.S.1, Sargsyan A.A.1, Kon’kova S.G.1, Khachatryan A.K.1,2, Badasyan A.E.1, Avagyan K.A.1, Sargsyan M.S.1
-
Affiliations:
- Scientific Technological Center of Organic and Pharmaceutical Chemistry
- State Academy of Crisis Management
- Issue: Vol 55, No 2 (2019)
- Pages: 282-286
- Section: Short Communications
- URL: https://journal-vniispk.ru/1070-4280/article/view/219993
- DOI: https://doi.org/10.1134/S107042801902026X
- ID: 219993
Cite item
Abstract
The reaction of (ethoxymethylidene)cyanoacetic ester with arylamides of acetoacetic acid proceeds under heating in the presence of triethylamine or at room temperature in the presence of sodium ethoxide. According to the NMR and IR data, the intermediate adduct undergoes no other transformations but azacyclization which predominantly involves the cyano group and forms ethyl 5-acetyl-1-aryl-6-hydroxy-2-imino-1,2-dihydropyridine-3-carboxylates in yields of 30–78%. In some cases, 5-acetyl-1-aryl-2-hydroxy-6-oxo-1,6-dihydropyridine-3-carbonitriles resulting from cyclization involving the ethoxycarbonyl group were isolated as minor products (3–12%).
About the authors
S. S. Hayotsyan
Scientific Technological Center of Organic and Pharmaceutical Chemistry
Author for correspondence.
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
A. A. Sargsyan
Scientific Technological Center of Organic and Pharmaceutical Chemistry
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
S. G. Kon’kova
Scientific Technological Center of Organic and Pharmaceutical Chemistry
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
A. Kh. Khachatryan
Scientific Technological Center of Organic and Pharmaceutical Chemistry; State Academy of Crisis Management
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014; ul. Acharyan 1, Yerevan, 0040
A. E. Badasyan
Scientific Technological Center of Organic and Pharmaceutical Chemistry
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
K. A. Avagyan
Scientific Technological Center of Organic and Pharmaceutical Chemistry
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
M. S. Sargsyan
Scientific Technological Center of Organic and Pharmaceutical Chemistry
Email: shayotsyan@gmail.com
Armenia, pr. Azatutyan 26, Yerevan, 0014
Supplementary files
