Oxidative Dimerization of Aromatic Amines using<i>t</i>BuOI: Entry to Unsymmetric Aromatic Azo Compounds
作者:Youhei Takeda、Sota Okumura、Satoshi Minakata
DOI:10.1002/anie.201202786
日期:2012.7.27
all the hype: An oxidative dimerization reaction of aromatic amines utilizing tert‐butyl hypoiodite (tBuOI) under mild reaction conditions leads to aromatic azocompounds (see scheme). The method allows access to unsymmetric aromatic azocompounds, which are difficult to prepare by conventional synthetic methods, in a selective manner.
A Practical Synthesis of Azobenzenes through Oxidative Dimerization of Aromatic Amines Using tert-Butyl Hypoiodite
作者:Satoshi Minakata、Youhei Takeda、Sota Okumura
DOI:10.1055/s-0032-1318388
日期:——
synthetic method of azobenzenes through oxidative dimerization of aromatic amines using a unique and cost-effective iodinating reagent is described. This new method allows for easy access to both of symmetrical and unsymmetrical azobenzenes under extremely mild conditions. A straightforward, convenient, and efficient synthetic method of azobenzenes through oxidative dimerization of aromatic amines using
The present application relates to a process of colour neutralizing treatment liquids, wherein the treatment liquid comprises a chromophore selected from the group consisting of monoazo, triarylmethane, xanthene, anthraquinone, hydrophobic dyes, and mixtures thereof, wherein the hydrophobic dyes are selected from the group consisting of benzodifuranes; methine; triphenylmethanes; naphthalimides; pyrazole; naphthoquinone; mono-azo, di-azo dyes and mixtures thereof, said process comprising the steps of :
i. providing a mixing vessel with the treatment composition comprising the chromophore;
ii. providing to the mixing vessel more than 0.045% of a reducing agent selected from the group consisting of sulfite, thiodiurea, formaldehyde bisulfite formaldehyde sulfoxilate and mixtures thereof; and
iii. mixing until discolouration by color neutralization of the chromophore is achieved.
本申请涉及一种对处理液进行颜色中和的工艺,其中处理液包含选自由单偶氮、三芳基甲烷、呫吨、蒽醌、疏水性染料及其混合物组成的组中的发色团,其中疏水性染料选自由苯并二呋喃、甲烷、三苯基甲烷、萘二甲酰亚胺、吡唑、萘醌、单偶氮、二偶氮染料及其混合物组成的组中的发色团;甲烷;三苯基甲烷;萘二甲酰亚胺;吡唑;萘醌;单偶氮、二偶氮染料及其混合物,所述工艺包括以下步骤 :
i. 向混合容器中提供包含发色团的处理组合物;
在混合容器中加入 0.045%以上的还原剂,该还原剂选自亚硫酸盐、硫代脲、甲醛亚硫酸氢盐、甲醛硫酸盐及其混合物;以及
iii. 一直搅拌到发色团中和变色为止。
Treating a textile garment with a hydrophobic dye solution
申请人:Henkel IP & Holding GmbH
公开号:US10106762B2
公开(公告)日:2018-10-23
The present invention provides a method for treating a textile garment with a hydrophobic dye solution.