Monatshefte fur Chemie p. 413 - 418 (1991)
Update date:2022-08-04
Topics: Synthesis Regioselectivity Characterization Yield Nucleophilic substitution Cyclization Aromaticity Ring Fusion Heterocyclic Chemistry Nitrogen Heterocycles Electrophilic Aromatic Substitution Multicomponent reactions Sulfur heterocycles Pyridazines Fused heterocycles
Czech, Karin
Haider, Norbert
Heinisch, Gottfried
Starting from 3-chloro-4-pyridazinecarbonitrile (1), the thienopyridazine derivatives 2 and 3 were prepared.Condensation of 3 with triethyl orthoformate afforded the novel tricyclic system 4.Reaction of 1 with 2-aminothiophenol, followed by treatment with
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