Reactions with pyridinethione derivatives: synthesis and characterization of thienyl[2,3-b]pyridine, pyrido[2',3':4,5] thieno[2,3-b]pyridazine, pyrido[2',3':4,5] thieno[2,3-b]-pyrimidinone, pyrazolino [3',4':4,5] thieno[2,3-b]pyridine and aminopyrazolo[3,4-b]pyridine derivatives

Article abstract of DOI:10.1080/10426509708043543

Thieno[2,3-b]pyridines 5a,b, 2-S-methylacetyl pyridine derivative 7a, 2-S-methyldiaetyl pyridine derivative 7b, 2-S-methylethoxycarbonyl pyridine derivative 12a, 2-S-methylacetylethoxycarbonyl pyridine derivative 12b and 2-S-methyl pyridine derivative 28, had been obtained via the reaction of pyridinethione 3 with phenacyl bromide derivatives, chloroacetone, α-chloroacetylacetone, chloroethylacetone, α-chloroethylacetoacetate and methyl iodide respectively. Several cyclization reactions were performed with 10% KOH, nitrous acid, hydrazine hydrate, formic acid, acetic anhydride and acetic acid to give an additional ring on the previously obtained new ring system.

Full text of DOI:10.1080/10426509708043543

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Phosphorus, Sulfur, and Silicon and the
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REACTIONS WITH PYRIDINETHIONE
DERIVATIVES: SYNTHESIS AND
CHARACTERIZATION OF THIENYL[2,3-
b]PYRIDINE, PYRIDO[2′,3′:4,5]
THIENO[2,3-b]PYRIDAZINE,
PYRIDO[2′,3′:4,5] THIENO[2,3-
b]-PYRIMIDINONE, PYRAZOLINO
[3′,4′:4,5] THIENO[2,3-b]PYRIDINE
AND AMINOPYRAZOLO[3,4-b]PYRIDINE
DERIVATIVES
Fawzy A. Attaby a
a Department of Chemistry, Faculty of Science, Cairo University, Giza, A.
R. Egypt
Version of record first published: 04 Oct 2006.
To cite this article: Fawzy A. Attaby (1997): REACTIONS WITH PYRIDINETHIONE DERIVATIVES: SYNTHESIS
AND CHARACTERIZATION OF THIENYL[2,3-b]PYRIDINE, PYRIDO[2′,3′:4,5] THIENO[2,3-b]PYRIDAZINE,
PYRIDO[2′,3′:4,5] THIENO[2,3-b]-PYRIMIDINONE, PYRAZOLINO [3′,4′:4,5] THIENO[2,3-b]PYRIDINE AND
AMINOPYRAZOLO[3,4-b]PYRIDINE DERIVATIVES, Phosphorus, Sulfur, and Silicon and the Related Elements,
126:1, 27-38
To link to this article: http://dx.doi.org/10.1080/10426509708043543
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