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Preparation of Nitrogen Heterocycles of Spiro[furo[2,3-d]-pyrimidine]pyrimidine Derivatives.

✍ Scribed by Branko S. Jursic; Edwin D. Stevens


Publisher
John Wiley and Sons
Year
2005
Weight
15 KB
Volume
36
Category
Article
ISSN
0931-7597

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## Abstract Diaminomethylene‐ and aminomethylthiomethylenehydrazones [2] of cyclic ketones 1–8 readily reacted with ethoxymethylenemalononitrile to give spiro[cycloalkane‐1,2′‐[1,2β€²,4β€²]triazolo[1,5′‐__c__]pyrimidine‐8′‐carbonitrile] derivatives 12–19 through the electrocyclic reaction of the initia