Pyridazines, LIV : On the Synthesis of Pyridazine-Fused S-Heterocycles: Thienopyridazine, Pyrimidothienopyridazine, and Pyridazinobenzothiazine

DOI: 10.1007/BF00809662

Source and publish data:

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

Authors:

Czech, Karin

Haider, Norbert

Heinisch, Gottfried

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Article abstract of DOI:10.1007/BF00809662

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

Full text of DOI:10.1007/BF00809662

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