CAS: 49735-71-9; Fast Red B Salt

该化合物是一种常用于染色和印刷应用的氮化二氮成分,特别是棉花和其他纤维纤维.作为一种稳定的盐,它提供可靠的与石内硫酸衍生物的结合特性,以产生生动的红色.技术等级配制确保工业环境中的成本效益,同时具有统一的染料吸收的连续反应性和溶性.在受控条件下,其稳定性将储存和处理过程中的分解风险降到最低.快速红乙盐对于大型纺织加工来说是合适的.快速红乙盐提供了高效的彩色产量和良好的快速性能,包括光和洗得快,满足了耐久色的标准行业要求.

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合成工艺路线路线简述

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    专利信息


    专利号:WO-9006913-A1
    优先权日:1988-12-14
    标 题:Explosion-proof 1-dimethylamino-3-dimethylimino-2-arylprop-1-ene salts, process for their preparation, and their use
    发明人:MUELLER INGRID; HEMMERLING WOLFGANG; WINGEN RAINER
    权利人:HOECHST AG
    摘要:The invention concerns the preparation of explosion-proof trimethine salts which are only slightly soluble in water and have the formula (I), in which: R is an aryl or a heteroaryl group, which may contain one or more substituents, and X is an anion-equivalent of a non-oxidizing acid group which is inert with respect to trimethine cation and forms trimethine salts which are only slightly soluble in water, by formylation of compounds of the formula (II): R-CH2?-COOH, in which: R has the same meaning as in formula (I), under the conditions of the Vilsmeier-Haack reaction, followed by aqueous hydrolysis of the formylation products to form water-soluble primary trimethine salts, and reaction of the water-soluble primary trimethine salts in the aqueous reaction mixture with acids of the formula (III): (H)n?X, in which: X has the same meaning as in formula (I) and n is a number from 1 to 3, or with water-soluble salts of such acids, in at least stoichometric proportions, and separation of the resulting trimethine salts of formula (I) which are only slightly soluble in water. Trimethine salts of formula (I) can be used as intermediates in the synthesis of heterocyclic compounds, particularly pyrimidines and pyridines.

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    优先权日:2015-01-30
    标 题:Process for the preparation of compounds such as 3-arylbutanal useful in the synthesis of medetomidine

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    优先权日:2013-03-15
    标 题:Methods for the synthesis of sphingomyelin and dihydrosphingomyelin

    专利号:TW-202423916-A
    优先权日:2020-08-12
    标题 :Synthesis of quinazoline compounds

    专利号:TW-I829003-B
    优先权日:2020-08-12
    标 题 :Synthesis of quinazoline compounds

    专利号:EA-034084-B1
    优先权日:2015-09-04
    标 题:Pan-Genomic Protein Inhibitors of NS5A Hepatitis C Virus, Pharmaceutical Compositions, Intermediate Products for the Synthesis of Inhibitors and Methods for Their Production and Use

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