The material to be dyed can also be pre-treated with one of the aforesaid acid-binding agents, subsequently treated with a solution or paste of the dyestuif and, finally, fixed at an elevated temperature as described above. Council Of Europe Publishing; Chem Ber. Nat Prod Bioprospect. The dyeings and prints obtainable with the new dyestuffs on cellulosic material are, in general, distinguished by good to very good fastness properties, especially by excellent fastness to wet processing, such as to washing to boiling soda and furthermore to water, to rubbing and brushing, to light and in some instances to chlorine and to peroxide.
Video: 2 7-anthraquinone sulfonic acid coupling Diels Alder reaction - synthetic applications
Anthraquinonesulfonic acid (AQ2S) is A Novel Neurotherapeutic Agent. T C Jackson;, J D Verrier; & P M Kochanek. Cell Death & Disease. 1-Amino(substituted)amino anthraquinonesulphonic acids of bromamine acid with aromatic or cycloaliphatic amines, by an Ullmann reaction (60), greenish blue dyes 61, 62 and C.I. Acid Violet 42, C.I. [  ( 63). 1-aminobenzenesu1phonic acid 2alfimo-5hyihroxynaphthalenesu1- A. reaction of 1-aminobromo-anthraquinone 2 sulphonic acid with an excess of 4 .
In the next step we tried to introduce a tetrazolyl moiety at position 2 starting from the cyano derivative 9 using two different previously described approaches [ 62 — 63 ].
The temperature is increased, while stirring, for about 5 to 10 C. Dyeings and prints on synthetic polyamide fabrics are distinguished by very good fastness to water, washing and light whereas dyeings and prints on synthetic polyester materials, particularly on polyethylene terephthalate, exhibit good fastness to sublimation, to washing and to light.
Structures of the anthraquinone derivatives Reactive Blue 2 RB-2 and bromaminic acid sodium salt.
Reactive disazo dyes containing fluoro-chloropyrimidyl groups and vinyl sulfonyl group. Bluis red; 93 -do l-aminhydroxynaphthalene4, fi-disulphonic acid.
9,Anthraquinone-2,7-disulfonic acid (AQDS) is considered a benchmark (3, 16) Huskinson et al.
first coupled AQDS, as a negative electrolyte, and . (31) Given that the chemical shift of an aryl sulfonic acid is 11–12 ppm.
B 9,Anthraquinonesulfonic acid sodium salt hydrate, 97% (dry wt.), water ca % C14H7NaO5S•xH2O A Methanesulfonic acid, 98+%.
Verfahren zur Herstellung von Derivaten des alfa Aminoanthrachinons. Stirring is continued until free amino groups of the starting materials are no longer detectable. Dyestuffs in which the radical of the Formula II is directly linked with F can be built up in the series of azo compounds for example by diazotizing an aminoaryl compound which contains the aryl nucleus directly linked With the 5- or 6-membered nucleus A of the compound of the general Formula II via a carbon-carbon bond, and possibly coupling with azo components.
Justus Liebigs Ann Chem. Trends Biochem Sci.
2 7-anthraquinone sulfonic acid coupling
|Verfahren zur Herstellung von Anthrachinonderivaten.
For purification, the reactive dyestufi thus obtained can be redissolved in parts of water of C. A further object is the provision of new dyestuffs which exhibit outstanding wet fastness properties when dyes or printed on OH-group containing materials according to methods known for fibre reactive dyestuffs.
The final step of the reaction can easily be detected from the amount of soda-lye consumed and from determination of free amino groups.
Video: 2 7-anthraquinone sulfonic acid coupling Tosylation of Alcohols - TsCl Tosyl Chloride - Alkyl Tosylate
US B2. After fixation the dyed material is rinsed hot and, if required, finally soaped, thereby removing insufficiently fixed dyestuff residues.
7. Scheme 4. Mechanism of the amination reaction. Moreover, 1 was prepared by reaction of anthraquinonesulphonic acid or its sulfonate derivatives with.
the Pd coupling between ethynylanthraquinone and . Dibenzyl Phosphate (7). 2-Anthraquinone sulfonic acid sodium salt.
However, introduction of a bromine or a hydroxymethyl residue in position 2 of 1-aminoanthraquinone was possible following published procedures [ 56 — 57 ] see below. The product dyes materials from cotton and regenerated cellulose, wool or synthetic polyamide fibres clear bluish red shades of good fastness to wet processing, to rubbing and to light.
Reddish yellow. In fact, bromaminic acid is one of the most utilized intermediates for the synthesis of AQ derivatives, including acid dyes and reactive dyes, through replacement of the C4-bromine atom by an ar alkylamino residue [ 49 ].
The radical F may contain the substituents customary for the dyestuffs present in each case, such as sulfonic acid, carboxylic acid, optionally substituted sulfonamide, sulfone, alkylamino, aralkylamino, arylamino, acylamino, nitro, cyano, halogeno, hydroxy, alkoxy, azo groupings and the like.
Wilson J E.