高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (1): 67.

• 论文 • 上一篇    下一篇

镧系金属用于有机反应的研究──NdCl3/萘锂体系与羰基化合物的反应

包建春, 张金菊, 贝浼智   

  1. 南京师范大学化学系, 南京, 210024
  • 收稿日期:1993-03-14 修回日期:1993-08-16 出版日期:1994-01-24 发布日期:1994-01-24
  • 通讯作者: 贝浼智
  • 作者简介:包建春,男,30岁,硕士,讲师.
  • 基金资助:

    国家自然科学基金

Studies on the Application of Lanthanoid Metal to Organic Reactions──The Reaction of NdCl3/Lithium Naphthalide System with Carbonyl Compounds

BAO Jian-Chun, ZHANG Jin-Ju, BEI Mei-Zhi   

  1. Department of Chemistry, Nanjing Normal University, Nanjing, 210024
  • Received:1993-03-14 Revised:1993-08-16 Online:1994-01-24 Published:1994-01-24

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摘要： 由萘锂还原无水NdCl3制得的活性金属Nd*在与羰基化合物的反应中显示出较高的反应活性。该反应经水解可生成相应的醇、片呐醇和烯烃,其还原状态不仅与羰基化合物的性质有关,还取决于Nd*:RCOR′的摩尔比以及反应温度和反应时间。本文还较详细地研究了Nd*:二苯酮的反应,不同的Nd*:二苯酮摩尔比以及外加配体或改变溶剂都将改变该反应的选择性。对该反应的机理亦进行了探讨。

关键词: 活性金属钕, 萘锂, 羰基化合物

Abstract: The active neodymium metal(Nd*) prepared by the reduction of anhydrous NdCl3 with LiNp(LiNp=Lithium Naphthalide)shows a higher reactivity in its reaction with carbonyl compounds.The reaction of Nd* with carbonyl compounds followed by hydrolysis,produces the corresponding alcohols,pinacols and alkenes depending not only on the nature of the carbonyl compounds but also on the molar ratio of Nd*:RCOR' and the reaction time and temperature.The reaction of benzophenone with Nd* is studied in detail.The effect of.the different molar ratios of Nd*:RCOR' or adding the ligand or changing the solvent shows different selectivities of the reaction,The mechanism of the reaction of Nd* with benzophenone is discussed.

Key words: Active neodymium metal, Lithium naphthalide, Carbonyl compound

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