Eine neue Synthese für 3,4-Diaryl-5-oxo-4,5-dihydroisoxazole und ihre Überführung in 5-[<i>N</i>-(ω-Aminoalkyl)amino)isoxazole und 5-(2-Aminoethylthio)isoxazole
作者:Gerd Dannhardt、Stefan Laufer、Irmengard Obergrusberger
DOI:10.1055/s-1989-27221
日期:——
A New Synthesis of 3,4-Diaryl-5-oxo-4,5-dihydroisoxazoles and Their Transformation to 5-[N-(Ï-Aminoalkyl)amino]isoxazoles and 5-(2-Aminoethylthio)isoxazoles A novel method to synthesize 3,4-diaryI-5-oxo-4,5-dihydroisoxazoles by addition of methyl lithio(phenyl)acetates to benzonitrile oxides is described. The isoxazolinones are transformed to 5-[N-(Ï-aminoalkyl)-amino]isoxazoles and 5-(2-aminoethylthio)isoxazoles, respectively, via the corresponding 5-chloroisoxazoles.
3,4-Diaryl-5-oxo-4,5-dihydroisoxazoles and Their Transformation to 5-[N-(Ï-氨基烷基)氨基]异恶唑和 5-(2-氨基乙硫基)异恶唑的一种新合成方法 描述了一种通过向苯甲腈氧化物添加甲基硫代苯乙酸酯来合成 3,4-diaryI-5-oxo-4,5-dihydroisoxazoles 的新方法。 异噁唑啉酮通过相应的 5-氯异噁唑分别转化为 5-[N-(Ï-氨基烷基)-氨基]异噁唑和 5-(2-氨基乙基硫代)异噁唑。