127526-91-4Relevant academic research and scientific papers
Selective O-acylation of aromatic hydroxylamines by 2-acylimidazolium and 2-acylbenzimidazolium salts
Santos, Pedro P. O.,Trindade, Cristina L.,Lobo, Ana M.,Prabhakar, Sundaresan
, p. 3793 - 3796 (1993)
2-Acyl 1,3-dimethylbenzimidazolium and 2-acyl 1,3-dimethylimidazolium salts react with N-aromatic hydroxylamines in the presence of base to give the O-acyl derivatives.
Reaction of N-Acyloxy-2-nitrobenzenamines.I. Thermolysis in Benzene or Bromobenzene
Bryant, Ian R.,Dyall, Leonard K.
, p. 2275 - 2288 (2007/10/02)
N-Acyloxy-2-nitro- and N-acyloxy-2,4-dinitro-benzenamines have been pyrolysed at 140 deg C in benzene or bromobenzene solution.Homolysis ( to form RCO2-radical and ArNH-radical) is ruled out since virtually all the carboxylate is isolated as carboxylic acid.This acid might arise via a concerted elimination process ( the other product being a benzofurazan 1-oxide), or via heterolysis to ArNH01+, RCO21- with subsequent transfer of proton, and cyclization of the singlet 2-nitrophenylnitrene.These simple reactions compete with bimolecular reactions of products with substrate, in which the corresponding amine, azoxy compound and acid anhydride are generated.Attempts to synthesize N-tosyloxy derivatives of nitrobenzenamines gave only thermal decomposition products.N-Trifluoroacetoxy-2,4-dinitrobenzenamine was isolated as a crude product which detonated violently.
