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- W2016267388 abstract "Les fragmentations principales de 41 azaindolizines de structure imidazo [1,2-a]pyridine, imidazo [1,5-a]pyrimidine, imidazo[1,5-b]triazine-1,2,4 triazolo[2,3-b], -[4,3-b], -[3,4-c] et -[3,2-c]triazine-1,2,4 sont décrites. Il est montré que chaque système possède une fragmentation caractéristique de sa structure sauf lorsqu'une réaction de transposition de Dimroth en composé peut-être envisagée. Leur schéma de dégradation est lié au nombre et à la position des atomes d'azote. The principal fragmentations of 41 azaindolizines having an imidazo[1,2-a]pyridine, imidazo[1,5-a]pyrimidine, imidazo[1,5-b]-1,2,4-triazine, triazolo[2,3-b], -[4,3-b]-, -[3,4-c]- and -[3,2-c]-1,2,4-triazine structure are described. It is shown that each structure has its own characteristic fragmentation pathways except where a Dimroth rearrangement into an isomeric product can be postulated. The degradation scheme is correlated with the number and the position of the nitrogen atoms of the azaindolizines." @default.
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- W2016267388 date "1977-12-01" @default.
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- W2016267388 title "Fragmentations Principales de Mono-, Di-, Triet Tetra-azaindolizines Sous L'Impact Electronique" @default.
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- W2016267388 doi "https://doi.org/10.1002/oms.1210121207" @default.
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