Lee Jae Chul, Parker Kathlyn A, Sampson Nicole S
Department of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, USA.
J Am Chem Soc. 2006 Apr 12;128(14):4578-9. doi: 10.1021/ja058801v.
The ruthenium-catalyzed ring-opening polymerization (ROMP) of 1-cyclobutenecarbonyl glycine methyl ester provides translationally invariant, head-to-tail ordered polymers. This polybutadiene backbone contains (within the limits of detection) only E-trisubstituted olefins, and it has no stereocenters that would serve as a source of structural ambiguities. Characterization of the polymer products indicates that they have polydispersities ranging from 1.2 to 1.6 and suggests that they are the products of a "living" polymerization. 1-Cyclobutenecarboxamide-derived ROMP polymers are excellent prospects for applications that require stereoregular chains functionalized with polar ligands.
钌催化的1-环丁烯羰基甘氨酸甲酯的开环聚合反应(ROMP)可生成平移不变的、头对尾有序的聚合物。这种聚丁二烯主链(在检测限范围内)仅含有E-三取代烯烃,且没有会导致结构歧义的立体中心。聚合物产物的表征表明它们的多分散性在1.2至1.6之间,这表明它们是“活性”聚合的产物。源自1-环丁烯甲酰胺的ROMP聚合物对于需要用极性配体官能化的立构规整链的应用而言是极佳的候选材料。