970-26-3Relevant academic research and scientific papers
Visible-Light-Mediated Hydroacylation of Azobenzenes with α-Keto Acids
Yang, Jingya,Song, Menghui,Zhou, Hongyan,Wang, Ganggang,Ma, Ben,Qi, Yuanyuan,Huo, Congde
, p. 8407 - 8412 (2020/11/03)
A visible-light-mediated protocol for the hydroacylation of azobenzenes with α-keto acids has been developed. In the absence of any catalyst or additive, decarboxylative hydroacylation proceeded smoothly under visible-light irradiation at room temperature. A wide range of azobenzenes and α-keto acids were well-tolerated and afforded hydroacylation products in high to excellent yields. Preliminary investigations indicated that photoactive azobenzenes absorb visible light to enable the transformation.
Synthesis method of N, N' -diaryl benzoyl hydrazine compound
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Paragraph 0016; 0019, (2020/12/08)
The invention relates to a synthesis method of an N, N'-diaryl benzoyl hydrazine compound. The method comprises the following steps: adding an azobenzene compound and alpha-keto acid into dichloromethane, and stirring at room temperature under visible light irradiation until the reaction is complete to obtain a reaction mixture; and performing reduced pressure distillation on the reaction mixtureto remove a solvent, and performing silica gel column chromatography to obtain the N, N'-diaryl benzoyl hydrazine compound. According to the synthesis method disclosed by the invention, a large amountof N, N'-diaryl benzoyl hydrazine compounds are synthesized by virtue of a hydrogen acylation reaction of the azobenzene compound promoted by visible light and the alpha-keto acid for the first time,any catalyst, ligand and additive are avoided, the reaction temperature is room temperature, the yield is high, the atom economy is high, the byproduct is only carbon dioxide, and the requirements ofgreen chemistry and sustainable development are met.
Reduction of Ag(I) by 1-acyl-2-arylhydrazines: Mechanism of photographic infectious development
Bowman, W. Russell,Forshaw, J. Anthony,Hall, Kevin P.,Kitchin, Jonathan P.,Mott, Andrew W.
, p. 3961 - 3972 (2007/10/03)
The photographic process of 'infectious development' in which 1-acyl-2-arylhydrazines reduce Ag(I) has been studied using analogues. 1-Acyl-2-aryldiazenes, resulting from oxidation of 1-acyl-2-arylhydrazines, are hydrolysed to anions of aryldiazenes (ArN = NH), which undergo further oxidation with loss of nitrogen to yield aryl radicals. The aryl radicals cause 'feedback inhibition' which is prevented by the addition of benzhydrol.
