The ultraviolet spectra of O-(2,4-dinitrophenyl)oximes and 2,4-dinitrophenylhydrazones: transmission of electronic effects through O and NH groups
作者:Zvi Rappoport、Tuvia Sheradsky
DOI:10.1039/j29670000898
日期:——
The λmax values in the ultraviolet spectra of 61 pairs of 2,4-dinitrophenylhydrazones (DNP) and O-(2,4-dinitrophenyl)oximes (DNO) were compared. The λmax(DNP)–λmax(DNO)=Δλ values are 61 ± 1 mµ for aliphatic carbonyl compounds, 69 ± 1 mµ for aromatic aldehydes and ketones, and 71 ± 1 mµ for diaryl ketones. Deviations were found for several ortho substituents or for para substituents having strong +M
Experimental evidence of chalcogen bonding at oxygen
作者:Thomas Fellowes、Benjamin L. Harris、Jonathan M. White
DOI:10.1039/c9cc09896h
日期:——
which exhibited characteristics consistent with a chalcogen bond. The O-N bond length of the oxime was appreciably longer than the expected value, and NBO calculations indicated the presence of a n(O) → σ(O-N) orbital delocalisation. Topological analysis of the experimental electron density of two analogues shows the presence of a bondpath between the two oxygen atoms, with ρ(r) and ∇2ρ(r) values consistent
Jain, Ajay K.; Kumar, Anurag; Sarma, Kula N., Journal of the Chemical Society. Perkin transactions II, 1989, p. 153 - 158
作者:Jain, Ajay K.、Kumar, Anurag、Sarma, Kula N.
DOI:——
日期:——
Formation of O,N-disubstituted hydroxylamines and ketoxime esters in reactions between triazene 1-oxides and bases
作者:S. G. Zlotin、O. V. Prokshits、Yu. A. Strelenko、O. A. Luk'yanov
DOI:10.1007/bf00863828
日期:1992.10
A new method has been put forward for the synthesis of O,N-disubstituted hydroxylamines and ketoxime esters that is based on the reaction of triazene 1-oxides containing strong electron-withdrawing substituents with bases.
Kinetic studies and micellar effect on the aminolys is of certain o-aryl oximes