Unusual, CO assisted cyclo-oligomerization reactions of ethylene: formation of cyclopentane and cyclohexane derivatives by ytterbium Ziegler–Natta catalysts
Abstract
A new oligomerization of ethene to alkylcyclopentanes and/or alkylcyclohexanes using YbCl3/AlEtCl2 or ZrCl4/AlEtCl2 Ziegler–Natta type catalysts is described in which addition of carbon monoxide is essential.