化学学报 ›› 1987, Vol. 45 ›› Issue (4): 365-369. 上一篇    下一篇

研究论文

Cp2TiCl2及Cp2ZrCl2存在下炔烃还原偶联反应的区域选择性

刘以寅   

  1. 南开大学元素有机化学研究所
  • 发布日期:1987-04-15

Regioselectivity of reductive-coupling reaction of ethynes in the presence of titanocene and zirconocene dichloride

LIU YIYIN   

  • Published:1987-04-15

经五元钛、锆杂环,由非对称炔烃,区域选择性地合成了一系列立体专一的(Z,Z)-四芳基-1,3-丁二烯,并通过物理、化学方法证明了产物结构.

关键词: 氯化物, 环戊二烯 P, 耦合反应, 炔烃 P, 金属茂络合物, 还原反应, 钛络合物, 芳基, 丁二烯 P, 锆络合物

A series of (Z,Z)-tetraaryl-1,3-butadienes has been synthesized stereospecifically and regioselectively by acidolysis of five-membered Ti, Zr metallocycles formed from asym. substituted ethynes. E.g., stirring 4-MeC6H4CYCPh with zirconocene dichloride and sodium in THF gave 63% butadienes I and II (I/II = 95/5).

Key words: CHLORIDE, CYCLOPENTADIENE P, COUPLING REACTION, ALKYNE P, METALLOCENES, REDUCTION REACTION, TITANIUM COMPLEX, ARYL GROUP, BUTADIENE P, ZIRCONIUM COMPLEX

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