CAS: 128-86-9; 2,6-Anthracenedisulfonic Acid, 4,8-Diamino-9,10-Dihydro-1,5-Dihydroxy-9,10-Dioxo-

上下游产品

1,5-dihydroxyanthraquinone 1,5-dinitro-4,8-dihydroxy-anthraquinone-3,7-disulphonic acid sulfuric acid 2,6-dibromo-1,5-dihydroxy-4,8-dinitro-9,10-anthracenedione4,8-diamino-1,5-dihydroxyanthraquinone 4,8-diamino-1,5-dihydroxy-7-(4-hydroxy-phenyl)-9,10-dioxo-9,10-dihydro-anthracene-2-sulfonic acid Alizarinsaphirol SE 1,5-Diamino-4,8-dihydroxy-2-(4-pentyloxy-phenyl)-anthraquinone

📜1,5-二羟基-4,8-二硝基-9,10-二氧代-9,10-二氢蒽-2,6-二磺酸置于sulfur Sesquioxide体系中,化学反应生成溶剂蓝74
参考文献:De113724
标题:De113724

专利信息

专利号:US-3983145-A
优先权日:1973-11-01
标 题:Use of alpha-di(lower alkoxy) anthraquinones in the synthesis of Alizarin Saphirols
发明人：WHITE DAVID L; FITZPATRICK JOSEPH W
权利人:TOMS RIVER CHEMICAL CORP
摘要:Alpha-dihydroxyanthraquinones used as intermediates in the synthesis of many dyestuffs, such as the Alizarin Saphirols (e.g. Color Constitution No. 63000, 63005, 63010, 63011, 63315 and 63610) can be replaced on an equimolar basis by alpha-di(lower alkoxy)anthraquinones. The alpha-di(lower alkoxy) anthraquinones can be converted in a single step, by treatment with oleum, to the corresponding alpha-dihydroxyanthraquinone-beta-disulfonic acids in almost quantitative yield. The corresponding diamine is obtained by dinitrating followed by reduction of the nitro groups. The known intermediate, leuco 1,4,5,8-tetrahydroxyanthraquinone (see C.I. No. 62500) can be obtained either by reduction of the diamine or by reduction of the dinitro compound. In one embodiment, the alpha-di(lower alkoxy)anthraquinone is obtained from dinitroanthraquinone by treatment thereof with methanol and KOH.