Novel Syntheses of 5‐Aminothieno[2,3‐c]pyridazine, Pyrimido[4′,5′:4,5]thieno[2,3‐c]pyridazine, Pyridazino[4′,3′:4,5]thieno[3,2‐d][1,2,3]triazine and Phthalazine Derivatives.

Abstract

Pyridazine derivativesPyridazine derivatives R 0500 Novel Syntheses of 5-Aminothieno[2,3-c]pyridazine, Pyrimido[4',5':4,5]thieno[2,3-c]pyridazine, Pyridazino[4',3':4,5]thieno[3,2-d][1,2,3]triazine and PhthalazineDerivatives. -The synthesis of a variety of fused pyridazine derivatives via condensation reactions of 4-cyano-3-mercaptopyridazine (VII) are described. -(EL-GABY*, M. S. A.; EL-DEAN, A. M. K.; GABER, A. E.-A. M.; EYADA, H. A.; AL-KAMALI, A. S. N.; Bull. Korean Chem.