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Differentiation between [1,2,4]triazolo[1,5-a] pyrimidine and [1,2,4]triazolo[4,3-a]- Pyrimidine regioisomers by <sup>1</sup>H-<sup>15</sup>N HMBC experiments
ArticleAbstract: The condensation of malonoaldehyde derivatives with either a 3-amino-[1,2,4]-triazole or a 3,5-diamiPalabras claves:1 H, 13 C, 15 N, HMBC, Isomerisation, NMR, Regioisomerism, [1,2,4]triazolo[1,5-a] pyrimidines, [1,2,4]triazolo[4,3-a]pyrimidinesAutores:Antonio Salgado, Collazo A., Pevarello P., Varela C.Fuentes:scopusSynthesis of [1,2,4]-triazolo[1,5-a]pyrimidines by Dimroth rearrangement of [1,2,4]-triazolo[4,3-a]pyrimidines: A theoretical and NMR study
ArticleAbstract: Novel [1,2,4]-triazolo-[1,5-a]pyrimidine derivatives were prepared by oxidative cyclization of suitaPalabras claves:ANRORC mechanism, DFT, Dimroth rearrangement, [1,2,4]-triazolo-[1,5-a]pyrimidine, [1,2,4]-triazolo-[4,3-a]pyrimidineAutores:Alkorta I., Antonio Salgado, Elguero J., García Collazo A., García F., Pevarello P., Varela C.Fuentes:scopus