Die Substitution des 1,8-Dihydroxyanthrons-9 in meso-(10)-Stellung. XI. Mitt. über Laxantien
作者:O.-E. Schultz、H.-H. Schultze-Mosgau
DOI:10.1002/ardp.19652980508
日期:——
Die Umsetzungvon 1,8‐Dihydroxyanthron‐9 (Cignolin®) (I) mit Keten führt bei basischer Katalyse zu 10‐Acetyl‐I‐Derivaten. Der Verlauf dieser Umsetzung wird nach den Reaktionsprodukten gedeutet. Wegen sterischer Hinderung gelingt ein direkter chemischer Nachweis der Acetylcarbonylgruppe nicht, doch liefert das Ergebnis der Hydrierung mit Lithiumalanat, die zu 1,8‐Dihydroxy‐10‐äthylidenanthron‐9 führt
Potent Antipsoriatic Agents: A Facile Preparation of Acylated Derivatives from Dithranol in a Mild Basic Reaction
作者:David Woei-Ming Liang、Chun-Jian Du
DOI:10.1002/jccs.200400018
日期:2004.2
Treatment of dithranol 1 with various equivalents of acetyl chloride and Et 3 N in THF at room temperature afforded the corresponding acylated derivatives, such as 1-acetyloxy- and 1,8-diacetyloxy-9(10H)-anthracenones, 6a,and 6b, as well as 1,8,9-triacetyloxyanthracene 7a, and 1,8,9-triacetyloxy-10-acetylanthracene 7b. 1,8-Bis(trimethylacetyloxy)-9(10H)-anthracenone 6c was also obtained in high yield
在室温下,用各种当量的乙酰氯和 Et 3 N 在 THF 中处理联蒽酚 1,得到相应的酰化衍生物,例如 1-乙酰氧基-和 1,8-二乙酰氧基-9(10H)-蒽酮、6a 和 6b,以及1,8,9-三乙酰氧基蒽7a和1,8,9-三乙酰氧基-10-乙酰基蒽7b。1,8-双(三甲基乙酰氧基)-9(10H)-蒽酮6c也通过在温和酰化过程中使用新戊酰氯以高产率获得。
[EN] COMPOSITION COMPRISING AT LEAST ONE ANTHRONE DERIVATIVE AND ONE BASIFYING AGENT, AND METHOD FOR DYEING KERATINOUS FIBRES STARTING FROM THE COMPOSITION<br/>[FR] COMPOSITION COMPRENANT AU MOINS UN DÉRIVÉ D'ANTHRONE ET UN AGENT DE BASIFICATION, ET PROCÉDÉ DESTINÉ À COLORER DES FIBRES KÉRATINIQUES À PARTIR DE CETTE COMPOSITION
申请人:OREAL
公开号:WO2011045404A2
公开(公告)日:2011-04-21
A subject-matter of the invention is a composition for the dyeing of keratinous fibres comprising at least one anthrone derivative and at least one basifying agent, the use of the composition in hair dyeing and the use of the composition in a dyeing method. The dyeing method according to the invention makes it possible to dye keratinous fibres with anthrone derivatives under mild oxidizing conditions, even without using an oxidation base and an aromatic amine, while covering a broad palette of colours. The dyeing under oxidizing conditions observed operates under mild conditions of oxidation and/or of alkaline agent, in particular exposed to the air.