126079-59-2Relevant academic research and scientific papers
On Triazoles XVIII. An Unexpected Rearrangement Observed During the Reaction of 5-Amino-1,2,4-triazoles with N-Heterocyclic β-Oxo-esters
Reiter, Jozsef,Rivo, Endre
, p. 971 - 980 (2007/10/02)
In the course of the synthesis of pyrido-1,2,4-triazolopyrimidine derivatives 3c representing a novel ring system an unexpected rearrangement of the intermediate enamines to yield 5 was observed.A mechanism of the formation of 5 was suggested.The isomeric pyrido-1,2,4-triazolopyrimidine derivatives 4c containing also a new ring system were obtained, too.The structure of products obtained was proved with the help of their uv, cmr and X-ray spectra.
