Studies on isoxazole and pyrazole formation by the reaction of trifluoromethyl-substituted anilines with oxime and hydrazone dianions
作者:Lucjan Strekowski、Shou-Yuan Lin
DOI:10.1002/jhet.5570340539
日期:1997.9
5-(2-Aminophenyl)isoxazoles are obtained in good yields by the reaction of 2-(trifluoromethyl)aniline with dilithio derivatives of oximes of acetone, 3-pentanone, propiophenone, and cyclohexanone. An analogous synthesis of a substituted isoxazole from 4-(trifluoromethyl)aniline and 3-pentanone oxime and the synthesis of a substituted pyrazole from 2-(trifluoromethyl)aniline and 3-pentanone hydrazone
通过使2-(三氟甲基)苯胺与丙酮,3-戊酮,丙苯酮和环己酮的肟的二硫代衍生物反应,可以以高收率获得5-(2-氨基苯基)异恶唑。由4-(三氟甲基)苯胺和3-戊酮肟类似地合成取代的异唑和由2-(三氟甲基)苯胺和3-戊酮合成取代的吡唑的效率较低。