Reaction of 4,5,6-triaminopyrimidine and 2,4,5,6-tetraaminopyrimidine with 3-dimethylaminopropiophenones. Synthesis of new 4-aryl-2,3-dihydropyrimido4,5-b1,4diazepinesReportar como inadecuado




Reaction of 4,5,6-triaminopyrimidine and 2,4,5,6-tetraaminopyrimidine with 3-dimethylaminopropiophenones. Synthesis of new 4-aryl-2,3-dihydropyrimido4,5-b1,4diazepines - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Resumen

Several new 6-amino- and 6,8-dinmino-4-aryl-2,3-dihydropyrimido4,5-b1,4diazepines were obtained from the reaction of 4,5,6-triaminopyrimidine 1a and 2,4,5,6-tetraaminopyrimidine 1b with one equivalent of 3-dimethylaminopropiophenones 2 in absolute ethanol. Structure analysis of 6-amino- and 6,8-diamino-4-aryl-2,3-dihydropyrimido4,5-b1,4diazepines 3a-i, determined by detailed nmr measurements, reveals a high regioselectivity of this reaction.Nota general

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Autor: Insuasty, B.; - Saitz Barría, Claudio; - Insuasty, H.; - Quiroga, J.; - Jullian Matthaei, Carolina; -

Fuente: http://repositorio.uchile.cl/



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