Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
申请人:Lim Mu'lll
公开号:US20060156481A1
公开(公告)日:2006-07-20
Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one N-oxides of six-membered rings with one or two nitrogen atoms keratin dyeing compound. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.
Ballesteros, Paloma; Claramunt, Rosa M.; Canada, Teresa, Journal of the Chemical Society. Perkin transactions II, 1990, # 7, p. 1215 - 1219
作者:Ballesteros, Paloma、Claramunt, Rosa M.、Canada, Teresa、Foces-Foces, Concepcion、Cano, Felix Hernandez、et al.
DOI:——
日期:——
Study of the catalytic properties of tris (3,6-dioxaheptyl) amine (tda-1) in heteroaromatic nucleophilic substitution of chloropyridines and their n-oxides
作者:P. Ballesteros、R.M. Claramunt、J. Elguero
DOI:10.1016/s0040-4020(01)81663-x
日期:——
Catalytic properties of tris(3,6-dioxaheptyl)amine (TDA-1) have been analyzed in reactions of alkoxydehalogenation of 2- and 4-chloropyridine and their N-oxides under solid-liquid phase transfer catalysis conditions. Alkoxypyridines were obtained in excelent yields but with N-oxides a competitive alkaline cleavage of the performed ether was observed.