17609-80-2Relevant articles and documents
Hydroxylation of aromatic amines with dioxygen in photooxidation sensitized by substituted phthalocyanines
Fedorova, Tatyana M.,Derkacheva, Valentina M.,Shevchenko, Ekaterina N.,Luk'yanets, Evgeny A.,Bordaev, Eduard B.,Kaliya, Oleg L.
, p. 64 - 66 (2020/03/03)
Photooxidation of aniline and its methyl and chloro derivatives with dioxygen sensitized by substituted zinc (PcZn) and palladium (PcPd) phthalocyanines in solution and on the carrier surface upon visible light irradiation affords selectively the corresponding p-aminophenols. Active and the most stable PcPd derivative adsorbed on Amberlite XAD 7HP provides conversion of 2,6-dimethylaniline with selectivity over 90% without the loss of sensitizer activity at least in 8 repeated cycles, the overall turnover number of the sensitizer being greater than 25,000.
Method for synthesizing 4-amino-3-chlorophenol by means of multiple-temperature-zone continuous flow microchannel reactor
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Paragraph 0039; 0044; 0045; 0050; 0051; 0052; 0057; 0058, (2018/04/03)
The invention relates to a method for synthesizing 4-amino-3-chlorophenol by means of a multiple-temperature-zone continuous flow microchannel reactor, which belongs to the field of organic synthesisof anti-cancer drugs, and solves the problems in the prior art that in a process of synthesizing 4-amino-3-chlorophenol, the product yield is low, the purity is low, the cost is high and the safety property of the product is poor and the like as raw materials are not easily available, the catalyst is high in cost and the synthesized intermediate product is unstable in diazonium salt. By means of the microchannel reactor, sulfanilic acid is taken as an initial raw material, a target product 4-amino-3-chlorophenol is obtained by three steps of diazotization, coupling of diazonium salt and reduction of an azoic compound. The method provided by the invention can be applied to large-scale production of 4-amino-3-chlorophenol.
One step hair coloring compositions using salts
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, (2008/06/13)
A hair coloring composition comprising the following two compositions which are mixed just prior to application to the hair: (a) a composition comprising a water-soluble peroxygen oxidizing agent; and (b) a composition comprising one or more oxidative hair coloring agents selected from the group consisting of an aromatic diamine, an amino phenol, a naphthol, a polyhydric phenol, a catechol and mixtures thereof; wherein the composition comprising one or more oxidative hair coloring agents further comprises al least one water soluble carbonate releasing salts; and optionally a water soluble ammonium salt, is described.