An efficient synthesis for pyrimido[4′,5′:4,5]-thieno[2,3-c]pyridazine derivatives via intramolecular AZA-wittig reaction-heterocyclization strategy

Heterocycles

Volumn 45, Issue 7, 1997, Pages 1319-1336

  Quintela, José M ^a   Alvarez Sarandés, Rafael ^a   Veiga, M Carmen ^a   Peinador, Carlos ^a  

^a UNIVERSITY OF A CORUÑA   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0001673643     PISSN: 03855414     EISSN: None     Source Type: Journal    
DOI: 10.3987/com-97-7810     Document Type: Article

References (14)

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2. b) P. Molina and M. J. Vilaplana, Synthesis, 1994, 1197.
3. H. Wamhoff, G. Richardt, and S. Stölben, 'Advances in Heterocyclic Chemistry: Iminophosphoranes: Versatile Tools in Heterocyclic Chemistry,' Vol. 64, ed. by A. R. Katritzky, Academic Press, Inc., London, 1995, pp. 159-249.
4. For some of recent leading references, see a) H. Wamhoff, C. Bamberg, S. Herrmann, and M. Nieger, J. Org. Chem., 1994, 59, 3985.
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14. T. Okawa and S. Eguchi, Tetrahedron Lett., 1996, 37, 81.