78847-92-4Relevant academic research and scientific papers
Aminyloxide (Nitroxide), XXXIII. Oxidative Kupplung von Aminen und Hydroxylaminen mit Nitronen. Die Stereochemie von (Aminoalkyl)aminyloxiden
Aurich, Hans Guenter,Duggal, Suresh K.,Hoehlein, Peter,Klingelhoefer, Hans-Georg
, p. 2431 - 2439 (2007/10/02)
On treatment of nitrones 1 and 5 with amines 2 an equilibrium arises with 3 and 6, respectively.Oxidation with lead dioxide affords the (aminoalkyl)aminyl oxides 4 and 7, which were detected by ESR spectroscopy.According to the coupling constants radical 4Ag prefers conformation K1, whereas a dynamic equilibrium between K2 and K3 exists for 4Aa, Ae, and Af.For 4Aa the barrier of interconversion has been found to be 4.1 +/- 0.5 kcal/mol.Radicals 4B, C, and D prefer conformations similar to K4 or K5.The center of chirality in 4Ca and Cc is responsible for the different coupling constants of the two benzylic protons at the other side of aminyl oxide group.
