Facile Microwave-assisted Synthesis of 1,3,5-Trisubstituted Pyrazoline Derivatives Incorporating Sulfonyl Moiety
作者:Fei Liu、Jin-Feng Yang、Hong Liu、Wen-Zhen Wei、Yan-Mei Ma
DOI:10.1002/jccs.201500385
日期:2016.3
8a∼8f, 9a∼9f) with p‐toluene sulfonhydrazide af‐ forded 1,3,5‐trisubstitued pyrazoline derivatives using microwave‐assisted process in 25 min and 140 watt power in glycol. The structures of targeted compounds were established by IR, 1H NMR, MS and ele‐ mental analysis. The results indicate that microwave‐assisted synthetic process presents advantages in terms of enhancement in rate, decrease in reaction
我们开发的1,3,5-三取代的吡唑啉建设(环境友好,便捷的微波辅助进程10A〜10F,11A〜11F,12A〜12F,13A〜13F)。查耳酮,作为密钥intermedi-茨,通过各适当取代的芳族醛(的的缩合得到的1〜4)与4-取代的苯乙酮(图5a〜图5f通过微波辐射的作用下克莱森-施密特反应)。查耳酮(环化6A〜6F,7A〜7F,图8A〜8F,图9A〜9F)与p -甲苯sulfonhydrazide AF-涉水使用微波辅助的过程在25分钟内和在乙二醇140瓦特功率1,3,5-三取代吡唑啉衍生物。通过IR,1 H NMR,MS和元素分析确定了目标化合物的结构。结果表明,微波辅助合成工艺具有提高反应速率,减少反应时间,反应干净,操作方便等优点。