Abstract Vinylcycloalkanes with 12-, 15-, and 21-membered rings were synthesized from commercially available cycloalkanones or cycloalkyl carboxylic acids derived from malonate and ω-bromo-α-alkenes. Pd complexes with diimine ligands promoted the isomerization polymerization of vinylcycloalkanes with 15- and 21-membered rings to afford polymers having cycloalkylene groups in the main chain. Vinylcycloheneicosane with a 21-membered ring afforded polymers with M n up to 9700, whereas vinylcycloalkanes with smaller ring sizes (8- and 12-membered rings) yielded oligomers with M n = 720–1600. Vinylcycloalkanes with 12-, 15-, and 21-membered rings were synthesized from commercially available cycloalkanones or cycloalkyl carboxylic acids derived from malonate and ω-bromo-α-alkenes. Pd complexes with diimine ligands promoted the isomerization polymerization of vinylcycloalkanes with 15- and 21-membered rings to afford polymers having cycloalkylene groups in the main chain. Vinylcycloheneicosane with a 21-membered ring afforded polymers with M n up to 9700, whereas vinylcycloalkanes with smaller ring sizes (8- and 12-membered rings) yielded oligomers with M n = 720–1600.

中文翻译：

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通过 Pd 催化的乙烯基环烷烃异构化聚合合成多环聚烯烃

摘要 具有 12-、15- 和 21-元环的乙烯基环烷烃由市售的环烷酮或衍生自丙二酸酯和 ω-溴-α-烯烃的环烷基羧酸合成。Pd 与二亚胺配体的配合物促进了具有 15 和 21 元环的乙烯基环烷烃的异构化聚合，从而得到在主链中具有亚环烷基的聚合物。具有 21 元环的乙烯基环烯二十烷提供了 Mn 高达 9700 的聚合物，而具有较小环尺寸（8 和 12 元环）的乙烯基环烷烃产生了 Mn = 720-1600 的低聚物。具有 12-、15-和 21-元环的乙烯基环烷烃由市售的环烷酮或衍生自丙二酸酯和 ω-溴-α-烯烃的环烷基羧酸合成。Pd 与二亚胺配体的配合物促进了具有 15 和 21 元环的乙烯基环烷烃的异构化聚合，从而得到在主链中具有亚环烷基的聚合物。具有 21 元环的乙烯基环烯二十烷提供了 Mn 高达 9700 的聚合物，而具有较小环尺寸（8 和 12 元环）的乙烯基环烷烃产生了 Mn = 720-1600 的低聚物。