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Updated: Sep 10, 2025

Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions

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4-ピリジンカルボックスアルデヒドを様々なベンゾヒドラジドで生成したベンゾヒドラゾンの合成,光学特性,結晶構造および抗菌作用

Yi-Xuan Zhou1, Wei Li2, Zhonglu You3

  • 1The Second Hospital of Dalian Medical University. qingzhu_jiao@126.com.

Acta chimica Slovenica
|August 21, 2025
PubMed
まとめ

3つの新しいベンゾヒドラゾン系は,4-ピリジンカルボックスアルデヒドと代替ベンゾヒドラジドから合成された. これらの新しい化合物は,一般的な細菌に対する抗菌作用について特徴づけられ,テストされ,有望な結果が出ました.

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Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
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In 1865, August Kekule suggested the structure of benzene according to the structural theory of organic chemistry based on the three assertions—formula of benzene is C6H6, all the hydrogens of benzene are equivalent, and each carbon must have four bonds due to its tetravalency.
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Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
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