有机化学 ›› 1990, Vol. 10 ›› Issue (5): 459-463. 上一篇    下一篇

研究论文

用碲Ylide合成α,β-不饱和酮

钟琦;邵建国;刘长庆   

  1. 扬州师范学院化学系
  • 发布日期:1990-10-25

Synthesis of α,β-unsaturated ketones via telluronium ylide

ZHONG QI;SHAO JIANGUO;LIU CHANGQING   

  • Published:1990-10-25

本文合成了三个新碲盐, 并报道了它和醛, 酮在较温和条件下合成α,β-不饱和酮类化合物, 反应具有很好地立体选择性, 产物经分析证实均为E-型。

关键词: 红外分光光度法, 醛, 元素分析, 碲化合物, 溴化合物, 质子磁共振谱法, 苯 P, 酮, 烯酮 P, 脱卤反应

The condensation of 3 new telluronium salts I (R = p-Ph, p-Br, m-NO2) with aldehydes and ketones in the presence of potassium carbonate in acetonitrile-THF (9:1) at room temperature, which presumably proceeds via telluronium ylides was reported. Using this method, 21 a,b-unsatd. ketones, which are assigned the E-configuration were prepared

Key words: ELEMENTAL ANALYSIS, INFRARED SPECTROPHOTOMETRY, BROMINE COMPOUNDS, ALDEHYDES, TELLURIUM COMPOUNDS, PROTON MAGNETIC RESONANCE SPECTROMETRY, BENZENE P, KENONE P, KETONE, DEHALOGENATION REACTION

中图分类号: