5136-34-5Relevant academic research and scientific papers
Reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid with hydrogen on raney nickel
Bazanova,Kholodkova,Gostikin
, p. 436 - 440 (2002)
Reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid with hydrogen in aqueous solution on Raney nickel yields a trisazo compound identical to Direct Yellow K dye.
Supported nano-sized gold catalysts for selective reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid using different reductants
Chen, Ying,Peng, Wenchao,Wang, Shaobin,Zhang, Fengbao,Zhang, Guoliang,Fan, Xiaobin
, p. 215 - 220 (2012)
Gold nanoparticles supported on three metal oxides, TiO2, Al2O3 and Fe2O3, were prepared by a modified precipitation-deposition method using urea as an additive. These catalysts were tested in chemoselective reduction of 4,4′-dinitrostilbene- 2,2′-disulfonic acid to 4,4′-diaminostilbene-2,2′-disulfonic acid. Three reagents, hydrogen, carbon monoxide, and sodium formate, were employed as reductants. It was found that >94% of the nitrostilbene was transformed into the aminostilbene without the reduction of olefinic group. In addition, these catalysts exhibited stable performance after regeneration by calcination at 400 °C for 5 h. This clean approach provides a promising application for synthesis of amino substituted stilbene sulfonic acid on an industrial scale.
Selective reduction of 4,4′-dinitrostilbene-2,2′-disulfonic acid catalyzed by supported nano-sized gold with sodium formate as hydrogen source
Peng, Wenchao,Zhang, Fengbao,Zhang, Guoliang,Liu, Bo,Fan, Xiaobin
, p. 568 - 572 (2011)
Gold nanoparticles supported on four different metal oxides were prepared and applied in the chemoselective reduction of 4,4′-dinitrostilbene-2, 2′-disulfonic acid (DNS). With sodium formate as hydrogen source, > 99% of the DNS was transformed into 4,4′-diaminostilbene-2,2′- disulfonic acid (DSD) without the reduction of olefinic group, which uncovers a clean synthetic approach for useful amino substituted stilbene sulfonic acids.
BIVALENT LECA INHIBITORS TARGETING BIOFILM FORMATION OF PSEUDOMONAS AERUGINOSA
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Page/Page column 67-68, (2021/05/15)
The present invention relates to divalent compounds binding to LecA. The compounds are useful to block biofilm formation of Pseudomonas aeruginosa. The invention further relates to pharmaceutical compositions comprising these compounds and to therapeutic methods and uses of these compounds, in particular to therapeutic methods and uses for the treatment of Pseudomonas aeruginosa infections in a subject. The invention also relates to imaging of infections, such as biofilms produced by Pseudomonas aeruginosa, by using these divalent compounds.
Method for producing 4,4'-diaminobibenzyl-2,2'-disulfonic acid
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Paragraph 0038-0041; 0044-0047; 0049; 0050; 0055; 0057; 0059, (2019/10/01)
The invention discloses a method for producing 4,4'-diaminobenzyl-2,2'-disulfonic acid, the method comprises the following steps: adding DNS, an iron-copper composite carrier catalyst and a solvent which is methanol or ethanol into an autoclave, and heati
Preparation method of 4,4'-diaminodiphenyl-2,2'-disulfonic acid
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Paragraph 0042-0065, (2019/08/30)
The invention discloses a preparation method of 4,4'-diaminodiphenyl-2,2'-disulfonic acid. The preparation method comprises the following steps: mixing a DNS, a iron-nickel composite carrier-type catalyst and a solvent in a reactor; then dropwise adding h
Stabilization of folded peptide and protein structures via distance matching with a long, rigid cross-linker
Zhang, Fuzhong,Sadovski, Oleg,Xin, Steven J.,Woolley, G. Andrew
, p. 14154 - 14155 (2008/09/16)
Intramolecular cross-linking is predicted to stabilize the folded state of peptides and proteins most effectively if the cross-linker provides a rigid link that is well-matched in end-to-end distance with attachment sites in the peptide or protein. We des
Aryl sulfonic acids and derivatives as FSH antagonists
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, (2008/06/13)
This invention provides compounds of formula I having the structure wherein R1, Ar, Ar′, and Q are as defined in the specification, or a pharmaceutically acceptable salt thereof, which are useful as contraceptive agents.
INVESTIGATIONS IN THE REGION OF AROMATIC DISULFIDES. X. SYNTHESIS AND PROPERTIES OF STILBENE 2,2'-DISULFIDE AND ITS DERIVATIVES
Zheltov, A. Ya.,Avramenko, E. N.,Stepanov, B. I.
, p. 342 - 347 (2007/10/02)
The previously undescribed stilbene 2,2'-disulfide, bibenzyl 2,2'-disulfide, and a series of their derivatives were synthesized in order to study the character of electronic interaction between the S-S group and the ? system of stilbene.On the basis of th
