化学学报 ›› 2000, Vol. 58 ›› Issue (4): 481-485. 上一篇    下一篇

研究论文

5-磺基水杨酸催化两相法合成某些二茂衍生物

高子伟   

  1. 陕西师范大学化学系.西安(710062)
  • 发布日期:2000-04-15

Synthesis of titanocene derivatives catalyzed by 5- sulfosalicylic acid in a two-phase system

Gao Ziwei   

  1. Shanxi Normal Univ, Dept Chem.Xian(710062)
  • Published:2000-04-15

首次利用5-磺基水杨酸作为催化剂合成了9种二茂钛衍生物,经元素分析,UV-vis,IR及^1HNMR等对配合物结构进行了表征,并利用电子吸收光谱对取代水杨酸参与反应的机理进行了探讨,同时发现,5-磺基水杨酸水溶液也可用于二氯二茂钛的分离,并且非常有效。

关键词: 水杨酸P, 二茂钛, 元素分析, 紫外分光光度法, 质子磁共振谱法, 结构表征, 反应机理

A new synthetic method featuring using 5-sulfosalicylic acid as catalyst to prepare nine titanocene derivatives is reported. The title complexes were characterized by elemental anlysis, UV-vis, IR and ^1H NMR spectroscopy.Based on the UV-vis spectrum, the mechanism of synthetic complexes is proposed as follows: first, Cp2TiCl2 in the organic phase reacts interfacially with 5-sulfosalicylic acid in the aqueous phase to form an intermediate, The resulting specices undergoes an interfacial interaction with substituted salicylic acid to form the final complexes, which stay in the organic phase.Then the 'Cp2Ti' species return to the organic phase while 5-sulfosalicylic acid remains in the water phase.

Key words: SALICYLIC ACID P, ELEMENTAL ANALYSIS, ULTRAVIOLET SPECTROPHOTOMETRY, PROTON MAGNETIC RESONANCE SPECTROMETRY, STRUCTURE CHARACTERISTICS, REACTION MECHANISM

中图分类号: