4114-28-7Relevant articles and documents
Tuning the electrical and optical properties of dinuclear ruthenium complexes for near infrared optical sensing
Xun, Shidi,LeClair, Gaetan,Zhang, Jidong,Chen, Xin,Gao, Jian Ping,Wang, Zhi Yuan
, p. 1697 - 1700 (2006)
Redox-active dinuclear ruthenium complexes with various 1,2-dicarbonylhydrazido (DCH) ligands are designed and prepared to have intense absorption in the near-infrared region for potential optical sensing in aqueous media, as demonstrated for sensing hydrogen peroxide in this study.
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Nozaki et al.
, p. 45 (1967)
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Photooxidation mechanism of nitrogen-containing compounds at TiO2/H2O interfaces: An experimental and theoretical examination of hydrazine derivatives
Waki, Kunio,Zhao, Jincai,Horikoshi, Satoshi,Watanabe, Natsuko,Hidaka, Hisao
, p. 337 - 343 (2000)
The photocatalytic oxidation of oxalyldihydrazide, N,N'- bis(hydrazocarbonyl)hydrazide, N,N'-bis(ethoxycarbonyl)hydrazide, malonyldihydrazide, N-malonyl-bis[(N'-ethoxycarbonyl)hydrazide] was examined in aqueous TiO2 dispersions under UV illumination. The photomineralization of nitrogen and carbon atoms in the substrates into N2 gas, NH4/+ (and/or NO3/-) ions, and CO2 gas was determined by HPLC and GC analysis. The formation of carboxylic acid intermediates also occurred in the photooxidation process. The photocatalytic mechanism is discussed on the basis of the experimental results, and with molecular orbital (MO) simulation of frontier electron density and point charge. Substrate carbonyl groups readily adsorb on the TiO2 surface, and the bonds between carbonyl group carbon atoms and adjacent hydrazo group nitrogen atoms are cleaved predominantly in the initial photooxidation process. The hydrazo groups were photoconverted mainly into N2 gas (in mineralization yields above 70%) and partially to NH+4 ions (below 10%). The formation of NO+3 ions was scarcely recognized. (C) 2000 Elsevier Science Ltd.
Multiparameter correlation of the rate of a [2 + 2] cycloaddition reaction versus solvophobicity parameter and normalized polarity parameter in aqueous solutions
Gholami,Habibi Yangjeh
, p. 468 - 472 (2000)
The second-order rate constants of the [2 + 2] cycloaddition reaction between diethyl azodicarboxylate and ethyl vinyl ether were obtained spectrophotometrically in various solvents and aqueous solutions of 1,4-dioxane and methanol at 30 ± 0.1 °C. In all media except aqueous solutions, a very good linear correlation of logk2 vs ETN (normalized polarity parameter) was obtained (n = 11, r = 0.991, s = 0.086). Because of the higher polarity of the activated complex relative to the reactants, the rate of the reaction increase with increasing solvent polarity parameter. Dual-parameter correlation of logk2 vs π* (dipolarity/polarizability) and a (hydrogen bonding acidity) also gives good results in various solvents (n = 11, r = 0.985, s = 0.118). Both n* and α have approximately equal effects on the reaction rate. In aqueous solutions of 1,4-dioxane and methanol, the second-order rate constants of the reaction increase dramatically with increasing mole fraction of water. A dual-parameter correlation of logk2 vs Sp (solvophobicity parameter) and ETN was found in aqueous solutions (n = 13, r = 0.988, s = 0.165), in which Sp plays an important role in determining the reaction relative to ETN. This model represents a significant improvement in regression coefficient with respect to the single parameter correlation vs Sp or ETN (r = 0.954 and 0.854, respectively). Similarly to aqueous solutions, a dual-parameter correlation of logk2 vs Sp and ETN was obtained in all media (n = 21, r = 0.987, s = 0.177). Copyright
Green et al.
, p. 3083 (1968)
“On-Droplet” Chemistry: The Cycloaddition of Diethyl Azodicarboxylate and Quadricyclane
Bain, Ryan M.,Sathyamoorthi, Shyam,Zare, Richard N.
supporting information, p. 15083 - 15087 (2017/11/20)
Sharpless and co-workers previously studied the [2σ+2σ+2π] cycloaddition of diethyl azodicarboxylate (DEAD) and quadricyclane and reported that the addition of water to the neat reagents caused an acceleration in the reaction rate, giving birth to what has been called “on-water” chemistry. We have examined the same reaction in aqueous microdroplets (ca. 5 μm diameter) and find that the cycloaddition reaction is accelerated even further (by a factor of 102) compared to that of the “on-water” reaction reported previously. The trends of acceleration in solvents other than water demonstrated by Sharpless and colleagues were replicated in the corresponding microdroplet experiments. We also find that DEAD reacts with itself to form a variety of hydrazine carboxylates and intercept intermediates of this reaction in microdroplets to validate a mechanism proposed herein. We suggest that “on-droplet” chemistry, similar to “on-water” chemistry, may be a general process of synthetic interest.
Method of manufacturing Azodicarboxylic acid diester compd. (by machine translation)
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Paragraph 0026; 0028, (2017/04/28)
PROBLEM TO BE SOLVED: To provide a manufacturing method in which an azodicarboxylate diester compound can be efficiently obtained in a high yield and which is industrially advantageous.SOLUTION: There is provided a manufacturing method for azodicarboxylate diester compound including: a process (a) of obtaining a 1,2-hydrazine dicarboxylate diester compound through reaction between hydrazine and a halocarbonate ester; and a process (b) of obtaining an azodicarboxylate diester compound represented by general formula (2) (where A represents a hydrocarbon or a hydrocarbon which may have an ether bond) by oxidizing the 1,2-hydrazine dicarboxylate diester compound obtained in the process (a), the 1,2-hydrazine dicarboxylate diester compound being neither isolated nor refined.