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    2 7-anthraquinone sulfonic acid coupling

    images 2 7-anthraquinone sulfonic acid coupling

    Compound 6 was subsequently used to prepare the corresponding 2-carbaldehyde 7the 2-carboxylic acid 8and the 2-cyano derivative 9 under the following reaction conditions. 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. Verfahren zur Herstellung von Derivaten des alfa Aminoanthrachinons. USB1 en. At the same time the pH of the reaction mixture is kept at about 6. The method of Gutmann et al.


  • Video: 2 7-anthraquinone sulfonic acid coupling Electrophilic Aromatic Substitution Reactions of Benzene Review

    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.

    images 2 7-anthraquinone sulfonic acid coupling

    reaction of 1-aminobromo-anthraquinone 2 sulphonic acid with an excess of 4 .
    Acid dye composition of anthraquinone dyes. Arch Insect Biochem Physiol. A dyestuff of the formula 0 NH: 7.

    Video: 2 7-anthraquinone sulfonic acid coupling Tosylation of Alcohols - TsCl Tosyl Chloride - Alkyl Tosylate

    We initially tried to reproduce the published procedure, however the resulting product contained ca. Among the halogen substituents in the pyrazine radical, chlorine and bromine substituents are of special interest. JPB2 en.

    images 2 7-anthraquinone sulfonic acid coupling
    2 7-anthraquinone sulfonic acid coupling
    Thus, starting from compound 5and following the oxidation procedures described earlier, we successfully prepared the non-brominated carbaldehyde 13 and carboxylic acid In the opposite case, dyestuffs or dyestuff intermediates which contain reactive groupings, for example in the form of sulfonic acid halide, carboxylic acid halide, urethane, ester, haloalkyl and similar groupings, can be reacted with those compounds of the Formula II which contain in the aromatic or heterocyclic nucleus A an amino or amide group with replaceable hydrogen and, insofar as dyestuff intermediates are used, the latter can again be converted into the desired final dyestucs.

    French Patent. JPB2 en. The dyestuff thus obtainable dyes cellulosic materials, particularly textiles of cotton and regenerated cellulose from a long bath in the presence of soda at 40 to 80 C.

    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.

    According to Shie et al.

    New 2-aminopyridine based acid anthraquinone dyes have been synthesized by condensation of bromamine acid with 2-aminopyridine to produce 1-amino(2- amino pyridinyl)anthraquinonesulfonic acid, which is coupled with various naphthalene based acid coupling components References (7).

    images 2 7-anthraquinone sulfonic acid coupling

    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+%.
    Nat Protoc. NaOeS Example No. Open in a separate window.

    According to Shie et al. The dyestuif according to claim 1 which in the free alkoxy. Fiber reactive azodyes having a 2-vinylsulfonylsulfoaniline diazo component or a precursor thereof. The latter was further reacted to obtain 1-aminotetrazolylanthraquinone.

    images 2 7-anthraquinone sulfonic acid coupling
    2 7-anthraquinone sulfonic acid coupling
    The dyestuffs of formula I may belong to a great variety of classes, for example to the series of metal-free or metal-containing monoor polyazo dyestuffs, metal-free or metal-containing azaporphine dyestuffs, preferably phthalocyanine dyestuffs, anthraquinone, nitro, oxazine, dioxazine, triphenylmethane, azornethine, benzanthrone and dibenzanthrone dyestuffs as well as polycyclic condensation compounds of the latter.

    This compound represents a key starting material for the synthesis of biologically active AQ derivatives as well as a large number of dyes.

    images 2 7-anthraquinone sulfonic acid coupling

    Summary Anthraquinone AQ derivatives play a prominent role in medicine and also in textile industry. The 3- or 2-chloroquinoxalinecarboxylic acid chloride used in this example is obtained in the following way: 1 mol of 3,4-diaminobenzoic acid and 1 mol of monochloracetic acid are boiled under reflux in a weakly ammoniacal aqueous solution for one hour.

    These are worked up according to conventional techniques and with the addition of known auxiliaries into a dyestutf dispersion and used as such in the dyeor padding-liquor or in a printing paste.

    After removal of excess nitrous acid, Yellow Do.


    3 Replies to “2 7-anthraquinone sulfonic acid coupling”

    1. Metaxe

      As substituents X there are to be considered inter alia: optionally substituted alkyl, aralkyl and aryl radicals, sulfonic acid, carboxylic acid, halogen substituents, such as chlorine and bromine substituents, further nitro, hydroxy, alkoxy, cyano, sulfone and optionally substituted sulfonamide groups, acid ester groupings such as sulfonic acid and carboxylic acid ester groups and the like.