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A new approach to the synthesis of heteroannulated 3,1-oxazin-4-ones from β-enamino esters and phosgeneiminium salts

The heterocyclic β-enamino ester, ethyl 3,4-diamino-6-(dimethylamino)thieno[2,3-d]pyrimidine-2-carboxylate (3) was reacted with phosgeneiminium salts 6a,b to yield 4H-pyrimido[5′,4′:4,5]thieno[3,2-d][1,3]oxazin-4-ones 7a,b, respectively. Similarly, the reaction of dichloromethylene dimethylammonium...

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Bibliographic Details
Main Authors: Wang, Zhijun (Author) , Neidlein, Richard (Author) , Krieger, Claus (Author)
Format: Article (Journal)
Language:English
Published: 2000
In: Synthesis
Year: 2000, Issue: 2, Pages: 255-258
ISSN:1437-210X
DOI:10.1055/s-2000-6249
Online Access:Verlag, kostenfrei registrierungspflichtig, Volltext: http://dx.doi.org/10.1055/s-2000-6249
Verlag, kostenfrei registrierungspflichtig, Volltext: https://www.thieme-connect.de/products/ejournals/abstract/10.1055/s-2000-6249
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Author Notes:Zhijun Wang, Richard Neidlein, Claus Krieger

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