Convenient synthesis of azolopyrimidine, azolotriazine, azinobenzimidazole and 1,3,4-thiadiazole derivatives
Dawood, Kamal M.;Moghazy, Salwa M.;Farag, Ahmad M.;
arabian journal of chemistry2017Vol. 10pp. S2782-S2789
360
dawood2017convenientarabian
Abstract
Several pyrazolo[1,5-a]pyrimidine, triazolo[1,5-a]pyrimidine, pyrido[1,2-a]-benzimidazole, pyrimido[1,2-a]benzimidazole, pyrazolo[5,1-c]triazine, triazolo[5,1-c]-triazine, triazino[4,3-a]benzimidazole and 1,3,4-thiadiazole derivatives were synthesized via the reactions of (E)-3-oxo-5-phenylpent-4-enenitrile and the versatile, hitherto unreported (E)-2-(N,N-dimethylaminomethylene)-3-oxo-5-phenyl-4-pentenenitrile with the appropriate nitrogen and sulfur nucleophiles.