Farrar-Tobar Ronald A, Wozniak Bartosz, Savini Arianna, Hinze Sandra, Tin Sergey, de Vries Johannes G
Leibniz Institut für Katalyse e. V. an der, Universität Rostock, Albert-Einstein-Straße 29a, 18055, Rostock, Germany.
Angew Chem Int Ed Engl. 2019 Jan 21;58(4):1129-1133. doi: 10.1002/anie.201810605. Epub 2018 Dec 20.
Herein, we report on the use of the iron pincer complex Iron-MACHO-BH, in the base-free transfer hydrogenation of esters with EtOH as a hydrogen source. More than 20 substrates including aromatic and aliphatic esters and lactones were reduced affording the desired primary alcohols and diols with moderate to excellent isolated yields. It is also possible to reduce polyesters to the diols with this method, enabling a novel way of plastic recycling. Reduction of the renewable substrate methyl levulinate proceeds to form 1,4-pentanediol directly. The yields are largely governed by the equilibrium between the alcohol and the ethyl ester.
在此，我们报道了铁钳形配合物Iron-MACHO-BH在以乙醇为氢源的酯类无碱转移氢化反应中的应用。包括芳香族和脂肪族酯以及内酯在内的20多种底物被还原，以中等至优异的分离产率得到所需的伯醇和二醇。用这种方法还可以将聚酯还原为二醇，从而实现一种新型的塑料回收方式。可再生底物乙酰丙酸甲酯的还原直接生成1,4 - 戊二醇。产率在很大程度上受醇和乙酯之间平衡的控制。
