66166-73-2Relevant academic research and scientific papers
Synthesis and reactions of new nitronyl nitroxides
Kálai, Tamás,Jeko, József,Szabó, Zoltán,Párkányi, László,Hideg, Kálmán
, p. 1049 - 1055 (2007/10/03)
Various new 2-substituted 4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazol-1-yloxyl 3-oxide mono- 1b, 7, 13a,b, 14, 15, 16, 17, 22 and biradicals 8, 9 were prepared. The nitronyl nitroxide functions were selectively reduced by Fe/HOAc to 1-hydroxyimidazoline derivatives 3b, 11, 21. The reductions by Zn/HCl led to imidazolines 4, 12. The nitronyl nitroxide functions remained inert when the 2-phenyl compound was nitrated by H2SO4/HNO3 to give nitrophenyl nitronyl nitroxide derivatives 13a,b, 14.
Interesting Products Derived from the Reactions of 2,3-Diamino-2,3-dimethylbutane
Gagnon, Janet L.,Walters, Thomas R.,Zajac, Walter W.,Buzby, John H.
, p. 6712 - 6715 (2007/10/02)
The diimine, N,N'-dibenzylidene-2,3-diamino-2,3-dimethylbutane (10), was successfully synthesized from 2,3-diamino-2,3-dimethylbutane (3) by reaction with excess benzaldehyde.The reaction of diimine 10 with permanganate/PTC at pH = 4.1 did not give corresponding dinitrone 11 but unexpectedly gave 3-benzoyl-4,4,5,5-tetramethyl-2-phenylimidazoline (13) in 45 percent yield.The imidazoline 13 was independently prepared by benzoylation of 4,4,5,5-tetramethyl-2-phenylimidazoline (9) which had been synthesized from diamine 3 and methyl benzimidate.The cyclic α-dinitrone,2,3-dihydro-2,2,3,3,5,6-hexamethylpyrazine 1,4-dioxide (4), synthesized from N,N'-dihydroxy-2,3-diamino-2,3-dimethylbutane (2) and 2,3-butanedione, underwent ozonolysis to yield the corresponding vicinal dinitro compound, 2,3-dimethyl-2,3-dinitrobutane (1), quantitatively.
