Synlett 1992; 1992(7): 563-564
DOI: 10.1055/s-1992-21415
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1,2-Heteroannulation of Lactams: A Facile Entry to Fused Pyrimidines

José Barluenga* , Miguel Tomás, Vladimir Kouznetsov, Eduardo Rubio
  • *Departamento de Química Organometálica, Facultad de Química, Universidad de Oviedo, E-33071 Oviedo, Spain
Further Information

Publication History

Publication Date:
08 March 2002 (online)

Semicyclic aminoazadienes 3-4 are prepared from cyclic imines 1-2 and nitriles, and undergo cyclocondensation with aldehydes to give pyrido[1,2-c]pyrimidine 5 and pyrimido[1,6- a]azepine 6 derivatives. The preparation of fused pyrimidin-2(1H)-ones 7-8, either from azadienes 3-4 or from imines 1-2 in a one-pot procedure, is also described.

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