CAS: 117-10-2; 1,8-Dihydroxyanthraquinone

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117-12-4 81-64-1 129-43-1

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地蒽酚置于氧气体系中,用 乙醇 用作溶剂,化学反应 240.0H,反应生成1,8-二羟基蒽醌
参考文献:10-取代的 1,8-二羟基-9 (10H)-蒽酮的酸度和稳定性
标题:10-取代的 1,8-二羟基-9 (10H)-蒽酮的酸度和稳定性
摘要:测定了 10-取代蒽林衍生物在二甲亚砜和乙醇中的分解.虽然 10-ω-苯基亚烷基衍生物完全稳定,但 10-ω-苯基酰基取代的化合物缓慢降解为丹蒽酮和相应的羧酸.然而,与蒽林相比,这些衍生物的稳定性显着提高.Pka值的测定表明,ω-苯酰基衍生物比地蒽酚具有更强的酸,而ω-苯基亚烷基-取代通常使地蒽酚部分的酸度保持不变.
Doi:10.1002/ardp.19953280412

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.

专利号:US-6712949-B2
优先权日:2001-07-22
标 题:Electrochemical synthesis of hydrogen peroxide
发明人：GOPAL RAMANATHAN
权利人:ELECTROSYNTHESIS CO INC
摘要:Improved methods and devices for the synthesis of hydrogen peroxide employing redox catalysts in a gas diffusion electrode or membrane electrode assembly in a semi-chemical/electrochemical system for the production of high purity, stable, usually acidic, aqueous solutions of peroxide at high conversion efficiencies without requiring organic solvents.

专利号:US-10262094-B2
优先权日:2015-06-29
标 题:Synthesis of DC accurate noise compatible reduced netlist
发明人：MOISIADIS YIANNIS; Mouravliansky Nikolaos; DALOUKAS KONSTANTIS
权利人:HELIC INC
摘要:In one embodiment, a circuit analysis method includes obtaining a netlist of a circuit, generating a reduced model from the netlist, using the reduced model to synthesize a noise compatible netlist, ensuring accurate DC behavior, and simulating the circuit using the synthesized netlist.

专利号:US-4154747-A
优先权日:1977-07-07
标 题:Production of virtually pure 1-amino-8-nitro-4,5-dihydroxyanthraquinone
发明人：ELSER WOLFGANG; EPPLE GERHARD; HIMMELE WALTER
权利人:BASF AG
摘要:A process for the preparation of 1-amino-8-nitro-4,5-dihydroxyanthraquinone by partially reducing the corresponding dinitrohydroxyanthraquinone and isolating the reduction product, in which crude 1,8-dinitro-4,5-dihydroxyanthraquinone obtained by nitrating 4,5-dihydroxyanthraquinone is partially reduced in a phenol-water mixture, which contains from 5 to 50% by weight of water, in the presence of an alkali metal phenolate, by means of a reductone, reductonate or a mixture of these. The product is virtually free from by-products and is suitable for use for the synthesis of dyes.

专利号:US-3965125-A
优先权日:1971-02-08
标题:Synthesis of certain bis(phthalic anhydrides)
发明人：MEYERS ROBERT A
权利人:TRW INC
摘要:Monomeric high molecular weight dianhydrides or tetraacids can be produced by the nucleophilic coupling of a halo substituted phthalimides acid and an aliphatic or aromatic compound having polyfunctional groups capable of reacting with the halo moiety of the phthalinide followed by hydrolysis and dehydration. Specifically, 4-chlorophthalate sodium salt is converted to an imide to reduce side reactions with the carboxylic acid groups prior to reaction with 4,4'-disodiumdiphenylene oxide sulfone or 2,2-di (4-sodium phenoxide) propane. After the reaction of the imide and the sulfone or propane compounds, the diimide formed is converted to the corresponding dianhydride.

专利号:US-9672318-B2
优先权日:2015-06-29
标 题 :Synthesis of reduced netlist having positive elements and no controlled sources
发明人：MOISIADIS YIANNIS; Mouravliansky Nikolaos
权利人:HELIC INC
摘要:In one embodiment, a circuit analysis method includes obtaining a netlist of a circuit, generating a reduced model from the netlist, using the reduced model to synthesize a positive netlist having no controlled current or voltage sources, unstamping the synthesized positive netlist, and simulating the circuit using the unstamped synthesized positive netlist.