Abstract

An iron(II) hydride PNP pincer complex is applied as catalyst for the chemoselective transfer hydrogenation of aldehydes using an aqueous solution of sodium formate as hydrogen source. A variety of aromatic, heteroaromatic, and aliphatic aldehydes could be reduced to the corresponding alcohols in good to excellent yields with a catalyst loading of 1.0 mol% at 80 °C and 1 h reaction time. If present, C–C double bonds remained unaffected in course of the reaction, even when they are conjugated to the carbonyl group of the aldehyde. The catalyst’s lifetime and activity could be improved when the reactions were conducted in an ionic liquid-based micro emulsion.

Graphical abstract

中文翻译：

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由明确的氢化铁 (II) 络合物催化的水介质中醛的化学选择性转移氢化。

 抽象的

氢化铁 (II) PNP 钳络合物用作催化剂，使用甲酸钠水溶液作为氢源进行醛的化学选择性转移氢化。在催化剂负载量为 1.0 mol%、反应温度为 80 °C、反应时间为 1 小时的情况下，多种芳香族、杂芳香族和脂肪族醛可以以良好至优异的产率还原为相应的醇。如果存在，C-C 双键在反应过程中保持不受影响，即使它们与醛的羰基共轭。当反应在离子液体基微乳液中进行时，可以提高催化剂的寿命和活性。

 图形概要