137692-67-2Relevant academic research and scientific papers
Synthesis of Iminoquinones from Anilines Using IBX in DMSO
Ma, Heng Chang,Jiang, Xuan Zhen
, p. 412 - 416 (2007)
An efficient and convenient procedure for the preparation of 2-amino-(1,4)-benzoquinone-4-phenylimides from anilines using a λ5-iodane-1-hydroxy-1,2-benziodoxol-3(1H)-one-1-oxide (IBX) oxidation in dimethyl sulfoxide is described. This protocol
A Natural Glycyrrhizic Acid-Tailored Light-Responsive Gelator
Fang, Heshu,Zhao, Xia,Lin, Yuan,Yang, Song,Hu, Jun
, p. 1192 - 1198 (2018)
The construction of stimuli-responsive materials by using naturally occurring molecules as building blocks has received increasing attention owing to their bioavailability, biocompatibility, and biodegradability. Herein, a symmetrical azobenzene-functionalized natural glycyrrhizic acid (trans-GAG) was synthesized and could form stable supramolecular gels in DMSO/H2O and MeOH/H2O. Owing to trans–cis isomerization, this gel exhibited typical light-responsive behavior that led to a reversible gel–sol transition accompanied by a variation in morphology and rheology. Additionally, this trans-GAG gel displayed a distinct injectable self-healing property and outstanding biocompatibility. This work provides a simple yet rational strategy to fabricate stimuli-responsive materials from naturally occurring, eco-friendly molecules.
Fast synthesis of hydrazine and Azo derivatives by oxidation of rare-earth-metal-nitrogen bonds
Zhang, Lijun,Xia, Jing,Li, Qinghai,Li, Xihong,Wang, Shaowu
scheme or table, p. 375 - 378 (2011/03/21)
A novel N-N coupling reaction was developed through the oxidation of rare-earth-metal-nitrogen bonds produced by treatment of the easily available rare-earth-metal amides [(Me3Si)2N]3RE(μ-Cl) Li(THF)3 with aromatic primary or secondary amines. The reaction provides the symmetrical or unsymmetrical azo compounds and hydrazine derivatives in good to high yields within a very short time under mild conditions.
Synthesis and photoresponsive properties of a molecularly imprinted polymer
Gomy, Christophe,Schmitzer, Andreea R.
, p. 3865 - 3868 (2008/02/12)
A photoresponsive molecularly imprinted polymer was prepared from a di(ureidoethylenemethacrylate)azobenzene monomer, using a methotrexate analogue as template. Photoisomerization of the 3D crosslinked polymer matrix allowed switching the substrate affinity by altering the geometry and spatial arrangement of the receptor binding sites. As a result, controlled release and uptake of the template (or analogous ligands) were obtained.
Basic azo dyestuffs of the 3-cyano-2,4,6-triamino pyridine series
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, (2008/06/13)
The new basic azo dyestuffs of the formula STR1 wherein the symbols have the meaning given in the description, are suitable for dyeing synthetic and naturally occurring substrates which can be dyed with basic dyestuffs.
Oxidations of Aromatic Amines by Superoxide Ion
Crank, George,Makin, Mohammad I. H.
, p. 845 - 855 (2007/10/02)
Superoxide ion acts as a mild and highly selective oxidizing agent for aromatic amines.Aniline and α-naphthylamine were not oxidized, but β-naphthylamine formed dibenzophenazine, dibenzophenazine and 2,2'-azonaphthalen-1-ol. o- and p-Diamines are oxidized to diaminoazobenzenes but m-diamines are unreactive.Similarly o- and p-aminophenols are oxidized to dihydroxyazobenzenes but m-aminophenols are unaffected, and o-mercaptoaniline forms the disulfide.The oxidations are considered to be free-radical processes, initiated by hydrogen abstraction by superoxide from the substrates.The biological significance of the results is discussed.
Organic chemistry of superoxide. I. Oxidations of aromatic compounds.
Crank,Makin
, p. 2169 - 2170 (2007/10/05)
Potassium superoxide is a selective oxidant for aromatic compounds with the order of susceptibility of substituent groups being -SH>-NH2-OH. Only o- and p- disubstituted amines and phenols are oxidized but monosubstituted thiols react.
Insecticide evaporator comprising a stabilizer
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, (2008/06/13)
Insecticide evaporator comprising at least one volatile phosphoric ester insecticide, an agent for stabilizing the said ester against decomposition by protonization and used in an amount of 0.2 to 20% based on the weight of phosphoric ester, characterized in that the stabilizing agent contains at least one compound selected from the compounds of the chemical class of 1,3-benzodioxoles and at least one diazene.
Evaporator system comprising a stabilized pesticidal phosphoric acid ester and method for stabilizing such ester enclosed in an evaporator
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, (2008/06/13)
An evaporator system adapted for emitting insect killing vapors of an insecticide therefrom and comprising a liquid or solid composition enclosed therein, said insecticide consisting in at least one volatile phosphoric acid ester which is stabilized by at least one diazene compound.
