42797-25-1Relevant academic research and scientific papers
CONJUGATED SCHIFF'S BASES-14; CYCLOADDITION OF HETEROCUMULENES TO SOME 1-OXA-4-AZABUTADIENES
Moskal, Janusz,Moskal, Alexandra,Milart, Piotr
, p. 1787 - 1792 (2007/10/02)
1-Oxa-4-azabutadienes proved to be prone to react with some heterocumulenes after 1,3-cycloaddition patterns yielding various 5,5-disubstituted derivatives of 1,3-diaryl-hydanotoins as it was shown by the chemical and spectroscopic analysis.Relatively high yields, mild reaction conditions and a very weak effect of solvent polarity on the reaction rate suggested a synchroneous mechanism involving 1,2-migration of a substituent.
Conjugated Schiff's Bases. Part 12. Kinetics and Mechanism of Condensation of Active Methylene Derivatives (CH-Acids) with Nitrosobenzene
Moskal, Janusz,Milart, Piotr
, p. 3201 - 3215 (2007/10/02)
Condensation of various CH-acids of the beta-diketone-type with nitrosobenzene was found to involve a complex sequence of reactions including some reversible processes.The rate-limiting step exhibits second order kinetics and general base catalysis dependence.Structural and solvation effects were considered in terms of the corresponding activation parameters.A detailed mechanism for this condensation is proposed.
