作者:Laura Gilliom、Robert H. Grubbs
DOI:10.1016/0304-5102(88)85098-3
日期:1988.7
Titanacyclobutanes are polymerization catalysts for norbornene and its derivatives. It has been demonstrated that these catalysts provide living polymers and the intermediates can be well characterized. To determine the stereochemical features of these catalysts, the Ivin-Rooney monomers, 7-methyl and 1-methyl norbornene, were polymerized. Simple models are used to explain why trans geometry results
钛环丁烷是降冰片烯及其衍生物的聚合催化剂。已经证明这些催化剂提供了活性聚合物,并且可以很好地表征中间体。为了确定这些催化剂的立体化学特征,将Ivin-Rooney单体7-甲基和1-甲基降冰片烯进行了聚合。使用简单的模型来解释为什么反式几何会导致r对偶,而顺式攻击会产生所有m对偶。