112981-61-0Relevant academic research and scientific papers
Mononuclear Heterocyclic Rearrangements. Part 15. Kinetic Study of the Amine-catalysed Rearrangement of Some Z-Arylhydrazones of 3-Benzoyl-5-phenylisoxazole into 2-Aryl-4-phenacyl-5-phenyl-1,2,3-triazoles in Acetonitrile and in Benzene
Frenna, Vincenzo,Buscemi, Silvestre,Arnone, Caterina
, p. 1683 - 1687 (2007/10/02)
The kinetics of the title reaction have been measured in the presence of n-butylamine, piperidine, triethylamine, and diazabicyclooctane (DABCO).The reaction has also been studied in the presence of pairs of amines in benzene.The results confirmed the lower reactivity of isoxazole derivatives with respest to 1,2,4-oxadiazole derivatives (rate ratios ca.E-3).The kinetic laws observed are accounted for by the 'catalysis of catalysis' mechanism.
Mononuclear Heterocyclic Rearrangements. Part 14. Rearrangement of Some Z-Arylhydrazones of 3-Benzoyl-5-phenylisoxazole to 2-Aryl-4-phenacyl-1,2,3-triazoles in Dioxane-Water
Frenna, Vincenzo,Vivona, Nicolo,Macaluso, Gabriella,Spinelli, Domenico,Consiglio, Giovanni
, p. 537 - 540 (2007/10/02)
The kinetics of the title reaction have been measured at various pS+ values.The results show the occurrence of general base catalysis and furnish information about substituent effects on the studied reaction.A reaction mechanism analogous to that proposed for the rearrangement of the arylhydrazones of 3-benzoyl-5-phenyl-1,2,4-oxadiazole is suggested.The reactivity of isoxazole derivatives is much lower than that of 1,2,4-oxadiazole derivatives.
