Abstract Chiral and helical polymers and their resin are very attractive components in catalysis and separation chemistry. This manuscript discusses the synthesis and application of achiral and chiral imidazolium based poly(ionic liquids) (PILs). Imidazolium based cross-linked poly(ionic liquids) or polyelectrolytic-resins (PIL-resin) were synthesized by RAFT copolymerization of 1-vinyl-3-ethylimdazolium bromide with different cross linkers. In these PIL-resins, the chirality is induced at anionic part by simple anionic metathesis with optically pure amino acids, L & D-proline that gave six chiral PIL-resins. The morphology of PIL-resins was studied by SEM which shows microfibrils, twisted ribbons, and layered structures. The PIL-resins exhibit very good activity towards Diels-Alder reaction (cyclization of isoprene with different dienes), where quantitative conversions were achieved within 30 min at room temperature. Both catalytic activity and the selectivity remain same during first four recycles of the resin. The chiral PIL-resin catalysed heterogeneous asymmetric Baylis Hillman and Michael addition reactions shown better catalytic activities in comparison with chiral homo polymer.

中文翻译：

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RAFT 衍生的手性和非手性聚（离子液体）树脂：合成及在有机催化中的应用

摘要 手性和螺旋聚合物及其树脂是催化和分离化学中非常有吸引力的组分。本手稿讨论了非手性和手性咪唑基聚（离子液体）（PIL）的合成和应用。通过 1-乙烯基-3-乙基咪唑溴化物与不同交联剂的 RAFT 共聚，合成了咪唑基交联聚（离子液体）或聚电解质树脂（PIL 树脂）。在这些 PIL 树脂中，手性是通过简单的阴离子复分解与光学纯氨基酸 L 和 D-脯氨酸在阴离子部分诱导的，得到六种手性 PIL 树脂。通过扫描电镜研究了 PIL 树脂的形态，显示出微纤维、扭曲带和层状结构。PIL 树脂对 Diels-Alder 反应（异戊二烯与不同二烯的环化）表现出非常好的活性，其中在室温下 30 分钟内实现了定量转化。在树脂的前四次循环过程中，催化活性和选择性都保持不变。与手性均聚物相比，手性 PIL 树脂催化的多相不对称 Baylis Hillman 和 Michael 加成反应显示出更好的催化活性。