Nitrosation with Sodium Hexanitrocobaltate(III).
Nitrosation with Sodium Hexanitrocobaltate(III).
复制标题
用六硝基钴(III)钠进行亚硝化。
DOI：
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发表时间：
1997
影响因子：
3.6
通讯作者：
S. Polanc
中科院分区：
文献类型：
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作者：
B. Štefane;M. Kočevar;S. Polanc
研究了Na（3）Co（NO（2））（6）作为一种新试剂对各种含氨基官能团底物的亚硝化反应。反应在试剂的水溶液中进行。反应混合物的pH保持在4.3-5的范围内。酰肼转化为相应的酰基叠氮，与芳烃磺酰肼反应得到芳烃磺酰叠氮。用Na（3）Co（NO（2））（6）处理芳香胺，得到1，3-二芳基三氮烯，产率很高;还观察到最初形成的重氮化合物与富电子芳香环的偶联。由于与试剂形成络合物，脂肪胺的亚硝化是不可能的。
Na(3)Co(NO(2))(6) has been investigated as a new reagent for the nitrosation of various substrates containing an amino functionality. Reactions took place in an aqueous solution of the reagent. The pH of the reaction mixture remained in the range 4.3-5. Thus, hydrazides were transformed to the corresponding acyl azides, and the reactions with arenesulfonyl hydrazines afforded arenesulfonyl azides. Treatment of aromatic amines with Na(3)Co(NO(2))(6) gave 1,3-diaryltriazenes in excellent yields; coupling of the initially formed diazo compound to the electron rich aromatic ring was also observed. Nitrosation of aliphatic amines was not possible due to complex formation with the reagent.