The nitroderivatives 1a–c were found to react with the title ynamine 2 under mild conditions to give the corresponding fused isoxazoles 3a–c, as proved by an X-ray diffraction of 3a; a plausible mechanistic pattern for these conversions is presented.
X射线衍射3a证实,亚硝基衍
生物1a–c在温和的条件下与标题ynamine 2反应,生成相应的稠合
异恶唑3a–c。提出了这些转换的合理机制模式。