We describe a polymeric ionic liquid (PIL) derived from trimethyl(p-vinylbenzyl)ammonium chloride ([VBTAm]Cl) that efficiently catalyzes the N-formylation of amines employing CO₂ and PhSiH₃ at room temperature with low catalyst loadings in near-quantitative yield. Under more forcing conditions N-methylated products can be selectively obtained. The PIL catalyst can be easily recovered and reused repeatedly without a decrease in activity. The reaction mechanism was studied in situ using high-pressure NMR spectroscopy and a tentative mechanistic cycle has been proposed.

中文翻译：

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使用CO ₂ / PhSiH ₃的胺的N-甲酰化和N-甲基化的聚合物离子液体催化剂

我们描述了一种由三甲基（对乙烯基苄基）氯化铵（[VBTAm] Cl ）衍生的聚合物离子液体（PIL），该溶液可在室温下以低催化剂负载，在近室温下有效地利用CO ₂和PhSiH ₃催化胺的N-甲酰化反应。定量产量。在更强的条件下，可以选择性地获得N-甲基化产物。PIL催化剂可以容易地回收并重复使用而不会降低活性。使用高压NMR光谱对反应机理进行了原位研究，并提出了暂定机理。