UNPRECEDENTED ISOLATION OF ALK-1-EN-3-YN-1-YL INTERMEDIATES IN THE CATALYTIC OLIGOMERIZATION OF ALK-1-YNES BY CATIONIC LEWIS BASE-FREE ZIRCONOCENE COMPLEXES

被引：91

作者：

HORTON, AD

机构：

来源：

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS | 1992年 / 02期

关键词：

D O I：

10.1039/c39920000185

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

[Zr(C5Me5)2Me{B(4-C8H4F)4}] 1 catalyses the rapid regioselective oligomerisation of RC = CH to 2,4-disubstituted-but-1-en-3-ynes (R = Bu(t), Pr(n), Me, Ph, 4-C5H4Me) and 1,4,6-trisubstituted-hexa-1,3-dien-5-ynes (R = Pr(n), Me); isolation of the unprecedented crystalline complexes, [Zr(C5Me5)2{CH = C(R)C = CR}]+ (R = Bu(t) 2a, Pr(n) 2b) and [Zr(C5Me5)2{C(SiMe3) = CHCH = C(SiMe3)C = CSiMe3}]+ 3f, provides firm evidence for the catalytic cycle.

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页码：185 / 187

页数：3

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