Selective Oxidation of N-Alkyl Imines to Oxaziridines using UHP/Maleic Anhydride system
作者:Jafar Asgarian Damavandi、Bahador Karami、Mohammad Ali Zolfigol
DOI:10.1055/s-2002-31903
日期:——
Several structurally differentiated N-alkyl imines were oxidized to their corresponding oxaziridines using UHP/maleic anhydride system. Oxidation reaction was performed under mild conditions and oxaziridines were obtained in good to excellent yields.
Cycloaddition reactions of quinoneimine N-oxides and of fluorenoneimine N-oxide: exocyclic nitrones conjugated with electron-withdrawing rings
作者:Jaffar A. Damavandy、Richard A. Y. Jones
DOI:10.1039/p19810000712
日期:——
N-Phenyl-p-benzoquinoneimine N-oxide is generally unreactive in 1,3-dipolar cycloaddition reactions, but with acetylenedicarboxylate esters it gives indolones, formed from the initial adducts by a rearrangement which entails an alkoxycarbonyl migration. The analogous nitrone derived from anthraquinone gives unrearranged adducts with a variety of 1,3-dipolarophiles; monosubstituted alkynes and alkenes
Reaction of 2-hydrazino-1-azaazulene with diphenylnitrone gave benzaldehyde (1-azaazulen-2-yl)hydrazone (2) and phenylimino-p-benzoquinone-N-oxide (3). Reaction mechanism for the formation of 2 and 3 was discussed.