Title of article :
6,8-Dimethylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-dione: a novel method of pyrrole-ring annulation to an azine nucleus based on a tandem SNH–SNH process
Author/Authors :
Gulevskaya، نويسنده , , Anna V and Besedin، نويسنده , , Denis V and Pozharskii، نويسنده , , Alexander F and Starikova، نويسنده , , Zoya A، نويسنده ,
Issue Information :
هفته نامه با شماره پیاپی سال 2001
Abstract :
6,8-Dimethylpyrimido[4,5-c]pyridazine-5,7(6H,8H)-dione has been shown to react with some secondary amines in the presence of an oxidant to produce 6,8-dimethylpyrrolo[2′,3′;3,4]pyridazino[6,5-d]pyrimidine-7,9(6H,8H)-dione derivatives. The reaction represents a new method of pyrrole-ring annulation to an azine nucleus via a tandem SNH–SNH process.
Journal title :
Tetrahedron Letters
Journal title :
Tetrahedron Letters
