870-72-4, Adding a certain compound to certain chemical reactions, such as: 870-72-4, Hydroxymethanesulfonic Acid Sodium Salt, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, 870-72-4, blongs to alcohols-buliding-blocks compound.
EXAMPLE 4 [0188] 422 parts of 4-(beta-sulfatoethylsulfonyl)aniline are suspended in 1000 parts of ice-water and 270 parts of 30% hydrochloric acid and diazotized by dropwise addition of 260 parts of 40% sodium nitrite solution. After excess nitrite has been removed with sulfamic acid solution, the diazo suspension obtained is admixed with an aqueous solution of 166.5 parts of 4-hydroxy-7-(sulfomethylamino)naphthalene-2-sulfonic acid (obtained by reaction of 119.5 parts of 7-amino-4-hydroxynaphthalene-2-sulfonic acid with 75 parts of formaldehyde sodium bisulfite in an aqueous medium at pH 5.5-6 and 45 C.) and adjusted to pH 1.5 with solid sodium bicarbonate. After the acidic coupling has ended, this reaction mixture has added to it an aqueous solution of 335 parts of the second coupling component (18-1) and is adjusted to and maintained at pH 5-6 with sodium carbonate below 25 C. [C00035] [00035] [0189] The 50:50 mixture of the two dyes (1-4) and (11-3) which has formed after the coupling reaction has ended can be isolated by evaporation under reduced pressure or by spray drying. [C00036] [00036] [0190] The resulting dye mixture according to the present invention dyes cotton in red shades.; EXAMPLE 11 [0206] 281 parts of 4-(beta-sulfatoethylsulfonyl)aniline are suspended in 700 parts of ice-water and 180 parts of 30% hydrochloric acid and diazotized by dropwise addition of 173 parts of 40% sodium nitrite solution. After excess nitrite has been removed with sulfamic acid solution, the diazo suspension obtained is admixed with an aqueous solution of 83 parts of 4-hydroxy-7-(sulfomethylamino)naphthalene-2-sulfonic acid (obtained by reaction of 60 parts of 7-amino-4-hydroxynaphthalene-2-sulfonic acid with 37.5 parts of formaldehyde sodium bisulfite in an aqueous medium at pH 5.5-6 and 45 C.) and adjusted to pH 1.5 with solid sodium bicarbonate. After the acidic coupling has ended, this reaction mixture has added to it an aqueous solution of 111 parts of 4-amino-phthalene-1-sulfonic acid as the second coupling component and is adjusted to and maintained at pH 5-6 with sodium carbonate below 25 C. After the coupling reaction has ended, the reaction mixture is admixed with 73 parts of the golden yellow azo dye of the formula (Ga-1) and the resulting 42:46:12 mixture of the three azo dyes (I-4), (II-6) and (Ga-1) is isolated by spray drying. [C00046] [00046] [0207] The resulting dye mixture according to the present invention provides orange dyeings and prints on cotton for example under the dyeing conditions customary for reactive dyes.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,870-72-4, its application will become more common.
Reference:
Patent; DyStar Textilfarben GmbH & Co. Deutschland KG; US2005/34253; (2005); A1;,
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