22734-10-7Relevant articles and documents
SYNTHESIS OF DI-t-ALKYLAMINES
Corey, E. J.,Gross, Andrew W.
, p. 491 - 494 (1984)
Di-t-alkylamines can be synthesized efficiently by a three-step process: (1) oxidation of a t-alkylamine to a t-alkylnitroso compound with peracetic acid in ethyl acetate (2) conversion of the t-alkylnitroso compound to a tri-t-alkylhydroxylamine by successive trapping of two t-butyl radicals and (3) sodium naphthalide reduction to the di-t-alkylamine.
Chemoselectivity of Nitroxylation of Cage Hydrocarbons
Ivleva, E. A.,Klimochkin, Yu. N.,Leonova, M. V.
, p. 1702 - 1710 (2020/12/01)
Abstract: The composition of reaction mixtures obtained by nitroxylation of 13 cage hydrocarbons with 100% nitric acid and its mixtures with acetic acid, acetic anhydride, and methylene chloride has been studied. More reactive substrates react with lowest
Azodioxide radical cations
Greer, Melinda L.,Sarker, Haripada,Mendicino, Maria E.,Blackstock, Silas C.
, p. 10460 - 10467 (2007/10/03)
This report provides the first examples of solution-stable azodioxide radical cations and describes their direct spectroscopic observation and, in one case, their thermal chemistry. The formal oxidation potentials, Eo′, for N,N′-dioxo-2,3-diazabicyclo[2.2.2]oct-2-ene (3), N,N′-dioxo-2,3-diazabicyclo[2.2.1]hept-2-ene (4), and N,N′-dioxo-1,1′-azobis(norbornane) (5) are 1.65, 1.68, and 1.54 V vs SCE, respectively. ESR spectroscopy shows the intermediate cations to be π radicals. Radical cation 5?+ (red, λm 510 nm) has a five-line ESR spectrum of a(2N) 1.1 G, while 3?+ (bronze) has a nine-line ESR spectrum simulated as a(4H) 0.86 and a(2N) 1.22 G. Both 3?+ and 5?+ decay in seconds to minutes at room temperature. Thermal decomposition of 5?+ results in C,N and N,N bond cleavage, yielding 1-norbornyl cation (trapped by solvent) and NO+ (trapped in low yield by the oxidant under chemical oxidation conditions). Two viable mechanisms are presented for 5?+'s thermal decay, both of which invoke nitrosoalkane monomer 5m as an intermediate. In a related study, oxidation of nitrosoalkane 2m is found to mediate its facile denitrosation. This work affords the first examples of electron-transfer-mediated C,N bond cleavage of azodioxides and of nitrosoalkanes. Substantial bond weakening is shown to accompany electron loss from these substrates. For 5, π oxidation leads ultimately to σ C,N bond activation.