Synthesis and Properties of Amphiphilic Photoresponsive Gelators for Aromatic Solvents
摘要:
A sugar-based photoresponsive supergelator, N-glycosylazobenzene that shows selective gelation of aromatic solvents is described. The partial trans-cis isomerization of the azobenzene moiety allows photoinduced chopping of the entangled gel fibers to short fibers, resulting in controlled fiber length and gel-sol transition. The gelator is useful for the selective removal of toxic aromatic solvents from water.
[EN] NITROSATION REAGENTS AND METHODS<br/>[FR] RÉACTIFS ET PROCÉDÉS DE NITROSATION
申请人:UNIV CALIFORNIA
公开号:WO2021257849A1
公开(公告)日:2021-12-23
Provided are compounds that can find use as nitrosation reagents. Provided are nitrosation methods that include reacting a substrate with one of the provided nitrosation reagents and thereby generating a nitrosation product. Provided are kits including a nitrosation reagent. Provided are compositions wherein the nitrosation reagent is enriched in the 15N isotope.
Triazenides as Suitable Ligands in the Synthesis of Palladium Compounds in Three Different Oxidation States: I, II, and III
作者:Susana Ibañez、Larisa Oresmaa、Francisco Estevan、Pipsa Hirva、Mercedes Sanaú、M Angeles Úbeda
DOI:10.1021/om500702j
日期:2014.10.13
orthometalated dinuclear triazenide palladium(II) compounds of the general formula Pd2[(C6H4)PPh2]2[R–N–N–N–R]2 (R = C6H5, 3a; o-BrC6H4, o-3b; o-MeOC6H4, o-3c; o-MeC6H4, o-3d ; p-BrC6H4, p-3b; p-MeOC6H4, p-3c; p-MeC6H4, p-3d) have been synthesized and structurally characterized. The characteristics of these compounds were compared with the isoelectronic formamidinate derivatives. These triazenide compounds have
Synthesis of Deuterium-Labeled Azo Dyes of the Sudan Family
作者:Loredana Maiuolo、Antonio De Nino、Leonardo Di Donna、Fabio Mazzotti、Giovanni Sindona
DOI:10.1055/s-2008-1032036
日期:2008.2
Carcinogenic amines are formed in vivo during the metabolism of Sudan azo dyes. The identification and assay of these polluting agents requires the availability of deuterated analogues. Accordingly, two series of derivatives labeled on the phenylazo and naphthol moieties were synthesized. The new compounds were obtained in satisfactory chemical yields and with an excellent degree of labeling. The structures were confirmed by 1H NMR spectroscopy and high-resolution mass spectrometry.
Production of high-quality aromatic amino azo compounds by the rearrangement of 1,3-diaryl triazenes
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0013643A1
公开(公告)日:1980-07-23
A 1,3-diaryl triazene, in a solution obtained by the diazotization-coupling of a primary aromatic monoamine with a gas containing NO and NO2, which solution contains the monoamine and up to about 30 percent by weight of the triazene, based on the weight of the solution, is contacted with 0.4-2.0 percent of a strong acid, preferably nitric acid (based on the weight of the triazene-containing solution), at 50-120°C. The triazene rearranges to an aromatic amino azo compound in a high para/ortho isomer ratio with minimum formation of binuclear by-products.
将初级芳香族单胺与含有 NO 和 NO2 的气体重氮化偶联得到的溶液中的 1,3-二基三嗪(该溶液含有单胺和高达约 30%(重量)的三嗪(以溶液重量为基准))与 0.4-2.0%的强酸,最好是硝酸(以含三嗪溶液重量为基准)在 50-120°C 下接触。三嗪重新排列为芳香族氨基偶氮化合物,对位/正位同分异构比例高,双核副产物的生成量最小。
DIISOPENTYLTEREPHTHALAT
申请人:Evonik Degussa GmbH
公开号:EP3351526A1
公开(公告)日:2018-07-25
Ein Gemisch isomerer Dipentylterephthalate, deren Pentylreste zu weniger als 60 Mol-% n-Pentyl-Reste sind, zeichnet sich durch eine geringe Viskosität aus, welche auch bei Temperaturen unterhalb von 40 °C nicht signifikant erhöht. Plastisole umfassend diese Gemische weisen eine niedrige Plastisolviskosität auf, welche zudem mit der Zeit nur in geringem Maße zunimmt.