101-38-2Relevant articles and documents
Investigations of the reactions of monochloramine and dichloramine with selected phenols: Examination of humic acid models and water contaminants
Heasley, Victor L.,Fisher, Audra M.,Herman, Erica E.,Jacobsen, Faith E.,Miller, Evan W.,Ramirez, Ashley M.,Royer, Nicole R.,Whisenand, Josh M.,Zoetewey, David L.,Shellhamer, Dale F.
, p. 5022 - 5029 (2004)
The phenols are an important area of investigation because they are substituents in the humic acids and are common contaminants in water. The reactivities and orientations of two common phenols (phenol and m-cresol), and some of their chlorinated intermediates with aqueous monochloroamine and dichloroamine were presented. m-Cresol was more reactive than phenol with both chlorinating agents. NH2Cl and NHCl2 showed extensive reactivity toward the phenols, even the partially chlorinated less reactive intermediates would be expected to fully chlorinate the activated positions in phenolic substituents in the humic acids.
Method for dyeing keratinous fibres using an aminoindole in combination with a quinone derivative
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, (2008/06/13)
Method for dyeing keratinous fibres, characterized in that at least one composition (A) containing at least one aminoindole in a medium appropriate for dyeing is applied to these fibres, the application of the composition (A) being preceded or followed by the application of a composition (B) containing, in a medium appropriate for dyeing, at least one quinone derivative chosen from ortho- or para-benzoquinones, ortho- or para-benzoquinone monoimines or diimines, 1,2- or 1,4-naphthoquinones, ortho- or para-benzoquinone sulphonimides, α,ω-alkylene-bis-1,4-benzoquinones, or 1,2- or 1,4-naphthoquinone monoimines or diimines, the aminoindoles and the quinone derivatives being chosen such that the difference in redox potential ΔE between the redox potential Ei of the aminoindoles, determined at pH 7 in a phosphate medium on a vitreous carbon electrode by voltametry, and the redox potential Eq of the quinone derivative, determined at pH 7 in a phosphate medium by polarography on a mercury electrode relative to the saturated calomel electrode, in such that
Semi-empirical MO-calculations on the electronic spectra of benzoquinonechlorimides
Venuvanalingam, P.,Singh, U. Chandra,Subbaratnam, N. R.,Kelkar, V. K.
, p. 103 - 108 (2007/10/02)
The electronic spectra of chloro p-benzoquinone(4)-chlorimides have been studied and the energy levels have been calculated using PPP-CI procedure, on the basis of which, the spectral bands have been assigned.The results show that the p-benzoquinone(4)-chlorimide possesses a n-?* transition at 23.25 kk and three ?-?* transitions, one strongly allowed at 35.46 kk and two weakly allowed at 44.44 and 30.30 kk.Substitution by chlorine atom in the quinonoid ring does not change the spectral pattern appreciably.A comparison of the spectrum of p-benzoquinone with those of its mono and dichlorimide clearly reveals that the strongly allowed ?-?* transition and the lowest weakly allowed ?-?* transition shift bathochromically and the ?-?* transition hypsochromically as the oxygen atoms in p-benzoquinone are replaced progressively by chlorimino groups.An additional weakly allowed ?-?* transition is found around 44.44 kk in quinonechlorimides.Inversion is shown to result in allowedness of transition from HOMO to LVMO in quinonechlorimides whereas it is forbidden in the case of quinones.
