Synthesis of pyrido[1′,2′:1,2]imidazo[4,5‐b]pyrazines from 2,3‐dichloro‐5,6‐dicyanopyrazine with 2‐aminopyridines
作者： Toshinobu Suzuki , Yasushi Nagae , Keiryo Mitsuhashi
关键词:
摘要: Novel synthesis of the title compounds by facile cyclization between 2,3-dichloro-5,6-dicyanopyrazine and various 2-aminopyridines under relatively mild conditions is described. The reactivity depended on basicity 2-aminopyridines.
sci-hub.se 参考文章(3)
FUMIHIKO UCHIMARU, SEIZABURO OKADA, AKIRA KOSASAYAMA, TSUNEO KONNO, Syntheses of 1-Pyrazylpyridinium Salts, and Pyrido [1', 2' : 1,2] imidazo-[4,5-b] pyrazines, a New Type of Heterocyclic Compounds Chemical & Pharmaceutical Bulletin. ,vol. 20, pp. 1834- 1836 ,(1972) , 10.1248/CPB.20.1834
István Hermecz, Zoltán MÉSzáros, Chemistry of Pyrido[1,2-a]pyrimidines Advances in Heterocyclic Chemistry. ,vol. 33, pp. 241- 330 ,(1983) , 10.1016/S0065-2725(08)60055-0
Hellmut Bredereck, Günter Schmötzer, Die Reaktionen der tetrameren Blausäure Justus Liebigs Annalen der Chemie. ,vol. 600, pp. 95- 108 ,(1956) , 10.1002/JLAC.19566000204