Synthesis and reactions of some new heterocyclic compounds containing thieno[2,3-c] pyridazine moiety

Article abstract of DOI:10.1080/10426500008046617

Saponification of ethyl 3-amino-4,5-diphenylthieno[2,3-c]pyridazine-2-carboxyate (1) with alcoholic sodium hydroxide, followed by acidification, afforded the corresponding acid 2. Also, reaction of 1 with ethanolamine and formamide, respectively, gave compounds 5 and 6. Compound 2 reacts with orthophosphoric acid under different conditions to give some new thieno[2,3-c] pyridazine derivatives 3 and 4, which were subjected to reactions to produce compounds 7-18. Furtheremore, compounds 5 and 6 were used to synthesize some substituted pyrimido[4′,5′:4,5)-thieno[2,3-c]pyridazine derivatives 21-30.

Full text of DOI:10.1080/10426500008046617

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Phosphorus, Sulfur, and Silicon
and the Related Elements
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SYNTHESIS AND REACTIONS
OF SOME NEW HETEROCYCLIC
COMPOUNDS CONTAINING
THIENO[2,3-c] PYRIDAZINE
MOIETY
Sh. M. Radwan a
a Chemistry Department, Faculty of Science , Assiut
University , Assiut, 71516, Egypt
Published online: 04 Oct 2006.
To cite this article: Sh. M. Radwan (2000) SYNTHESIS AND REACTIONS OF SOME
NEW HETEROCYCLIC COMPOUNDS CONTAINING THIENO[2,3-c] PYRIDAZINE MOIETY,
Phosphorus, Sulfur, and Silicon and the Related Elements, 163:1, 153-169, DOI:
10.1080/10426500008046617
To link to this article: http://dx.doi.org/10.1080/10426500008046617
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