S 98 Synthesis of substituted pyrido[1,2-a]pyrimidines from 2-arylmethylidene-3-fluoroalkyl-3-oxopropionates [Electronic resource] / M. V. Pryadeina, Ya. V. Burgart, M. I. Kodess, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 12. - P2841-2845 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CYCLOCONDENSATION -- REGIOISOMERISM -- 2-ARYLMETHYLIDENE Аннотация: Cyclocondensation of 2-arylmethylidene-3-fluoroalkyl-oxopropionates with 2-amino-pyridine occurs at both the polyfluoroacylvinyl and alkoxycarbonylvinyl fragments to give alkyl 4-aryl-2-polyfluoroalkyl-4H-pyrido[1,2-a]pyrimidine-3-carboxylates and 4-aryl-2-hydroxy-3-polyfluoroacyl-4H-pyrido[1,2-a]pyrimidines, respectively. When treated with copper(II) acetate, the pyrido[1,2-a]pyrimidines yield metal complexes \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (12), 2841-2845.pdf |