83365-31-5Relevant academic research and scientific papers
Picosecond Laser Photolysis Studies of Hydrogen Atom Transfer Reaction via Heteroexcimer State in Pyrene-Primary and Pirene-Secondary Aromatic Amine Systems: Role of "Hydrogen-Bonding" Interaction between Amino Group of Donor and ? Electron Acceptor in the Heteroexcimer
Okada, Tadashi,Karaki, Ichiro,Mataga, Noboru
, p. 7191 - 7195 (1982)
The mechanism of charge transfer followed by proton transfer in the hydrogen atom transfer reaction of excited pyrene-primary and -secondary amine systems has been directly demonstrated by means of a picosecond laser photolysis method.In the case of pyrene-N-ethylamine heteroexcimer system in hexane, for example, it has been observed that the 1-hydro-1-pyrenyl radical and the pyrene triplet state are produced simultaneously in the time region of subnanosecond to nanosecond.The deuteration of the NH group of the amine affects considerably the rate of formation of the 1-hydro-1-pyrenyl radical but not the rate of intersystem crossing from the heteroexcimer.On the basis of the results obtained for various pyrene-primary and -secondary aromatic amine heteroexcimer systems, the nature of the interaction between donor and acceptor in these heteroexcimers and their conformation in relation to the mechanism of the hydrogen atom transfer reaction via heteroexcimer have been elucidated.
IMPORTANCE OF AMINE HYDROHALIDES IN ALCOHOLYSIS OF PHOSPHOROUS ACID AMIDES
Nifantyev, E. E.,Gratchev, M. L.,Borisov, M. L.,Bekker, A. R.
, p. 105 - 108 (2007/10/02)
The data are presented on the rates of deuteromethanolysis of 2-fluoro-1,3,2-dioxaphosphorinane 1 in the presence of various bases differing in the basicity and of that of 2-amino-1,3,2-dioxaphosphorinanes 22-4 catalysed by hydrogen fluoride salts of different amines.The alcoholysis of the fluorophosphite 1 in the presence of imidazole, N-ethylaniline and 2,6-di-tert-butyl-4-methylpiridine proceeds slowly whereas alcoholysis of the amidoesters 3,4 catalysed by imidazole and N-ethylaniline hydrofluorides occurs rapidly even at room temperature.These data do not match the hypothesis that halophosphites are intermediates in the alcoholysis of amidophosphites in the presence of amine hydrohalides.
