OLIGOMERIZATION OF ALKYNES BY THE RHCL3-ALIQUAT 336 CATALYST SYSTEM .1. FORMATION OF BENZENE-DERIVATIVES

被引：34

作者：

AMER, I

BERNSTEIN, T

EISEN, M

BLUM, J

VOLLHARDT, KPC

机构：

[1] HEBREW UNIV JERUSALEM,DEPT ORGAN CHEM,IL-91904 JERUSALEM,ISRAEL

[2] UNIV CALIF BERKELEY LAWRENCE BERKELEY LAB,DIV MAT & CHEM SCI,BERKELEY,CA 94720

[3] UNIV CALIF BERKELEY,DEPT CHEM,BERKELEY,CA 94720

来源：

JOURNAL OF MOLECULAR CATALYSIS | 1990年 / 60卷 / 03期

关键词：

Catalysts--Rhodium Chloride - Oligomers--Synthesis;

D O I：

10.1016/0304-5102(90)85254-F

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The cyclo-oligomerization of several terminal and internal alkynes under phase transfer conditions by the RhCl3-Aliquat® 336 catalyst is described. The kinetics of 1-heptyne cyclotrimerization at 90 °C in 1,1,2,2-tetrachloroethane/water were found to follow the second-order rate law d[arene]/dt = -k[alkyne][RhCl3] when the molar ratio of substrate:rhodium chloride:quat was approximately 25:1:1. The activation energy of Ea = 12.5 kcal mol-1 suggests that the catalysis is both chemically and diffusion controlled. Product analysis is compatible with a mechanism that involves rhodacyclopentadiene rather than metal cyclobutadiene intermediates. © 1990.

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页码：313 / 321

页数：9

相关论文

共 33 条

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