A. V. Erkin, V. Krutikov
2007
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0
Influential Citations
3
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Journal
Russian Journal of General Chemistry
Abstract
Structural modification of some (pyrimidin-2-yl)hydrazones derived from ethyl acetoacetate via methylation at the N3 atom promotes anomalous cyclization to give [1,2,4]triazolo[1,5-a]pyrimidine derivatives. The mechanism of this transformation includes specific cleavage of the aliphatic fragment in the substrate with subsequent rearrangement of carbene-like intermediate.