CAS: 2861-02-1; Acid Blue 45

相似化合物

6409-77-4 130-22-3 6258-06-6

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-12065461-B2
优先权日:2018-08-31
标题:Method for preparing 3′-O-amino-2′-deoxyribonucleoside-5′-triphosphate
发明人：SARAC IVO; HOLLENSTEIN MARCEL
权利人:DNA SCRIPT; PASTEUR INSTITUT; CENTRE NAT RECH SCIENT
摘要:The invention relates to a method for preparing 3′-O-amino-2′-deoxyribonucleoside-5′-triphosphate. It also relates to a solid support functionalized with at least one N-hydroxyphthalimide moiety and uses thereof for protecting 3′-hydroxy group of a 2′-deoxyribonucleoside during synthesis of a nucleoside or a derivative thereof.

专利号:US-11312742-B2
优先权日:2019-02-14
标题 :Process for preparing 3'-O-amino-ribonucleotide
发明人：SARAC IVO; BARBOUX CÉDRIC; NIYOMCHON SUPAPORN; BEAUFILS FLORENT; BUESCHLEB MARTIN
权利人:DNA SCRIPT SAS
摘要:The invention relates to a process for preparing a 3′-O-amino-ribonucleotide. It also relates to a compound of formula (III), and its use as a precursor for the synthesis of a 3′-O-amino-ribonucleotide. n n n n n n n n n n n n In formula (III), B is a nitrogenous base or a protected derivative thereof, G and G′ are identical or different, and are a protecting group, and RN— is a phthalimido or an imino group.

专利号:CN-101859077-B
优先权日:2010-04-29
标题:A kind of chemical synthesis method of color carbon powder

专利号:CN-101833255-A
优先权日:2010-04-29
标 题:Chemical Synthesis Method of Color Toner

专利号:CN-101859077-A
优先权日:2010-04-29
标 题 :Chemical synthesis method of colored carbon powder