实用的化学选择性芳香取代: N-苯基苯磺酰胺的高效双硝基化合成N-(2,4-二硝基苯基)苯磺酰胺
收稿日期: 2024-02-09
修回日期: 2024-04-01
网络出版日期: 2024-04-30
基金资助
泰安市科技发展规划(2019GX015); 山东第一医科大学学术推广计划(2019LJ003)
Practical Chemoselective Aromatic Substitution: Highly Efficient Dinitrification of N-Phenylbenzenesulfonamide for Synthesis of N-(2,4-dinitrophenyl)benzenesulfonamide
Received date: 2024-02-09
Revised date: 2024-04-01
Online published: 2024-04-30
Supported by
Science and Technology Development Plan of Tai'an City(2019GX015); Academic Promotion Program of Shandong First Medical University(2019LJ003)
以N-苯基苯磺酰胺为原料, 经双硝基化反应合成了N-(2,4-二硝基苯基)苯磺酰胺. 该方法操作方便, 具有良好的官能团耐受性. 该反应可能经过二氧化氮自由基(NO2•)中间体, 该中间体由硝酸钠和过硫酸铵的热反应过程产生. 此外, 该方法还为合成苯并咪唑和喹喔啉衍生物的关键中间体2,4-二硝基苯胺衍生物的制备提供了直接途径.
关键词: N-苯基苯磺酰胺; 双硝基化; N-(2,4-二硝基苯基)苯磺酰胺
徐小波 , 于晓 , 夏成才 , 冀亚飞 . 实用的化学选择性芳香取代: N-苯基苯磺酰胺的高效双硝基化合成N-(2,4-二硝基苯基)苯磺酰胺[J]. 有机化学, 2024 , 44(9) : 2915 -2923 . DOI: 10.6023/cjoc202402008
A novel route for dinitrification of N-phenylbenzenesulfonamide to synthesize N-(2,4-dinitrophenyl)benzenesul- fonamide has been developed. The method features convenient operation and good functional group tolerance. This reaction may go through a nitrogen dioxide radical (NO2•) intermediate, which is generated by the thermal reaction process of sodium nitrate and ammonium persulfate. In addition, it provides direct approach for the preparation of 2,4-dinitroaniline derivatives which are crucial intermediate for the synthesis of benzimidazoles and quinoxaline derivatives.
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