Transfer Hydrogenation and Hydrogenation of Commercial-Grade Aldehydes to Primary Alcohols Catalyzed by 2-(Aminomethyl)pyridine and Pincer Benzo[<i>h</i>]quinoline Ruthenium Complexes
作者:Salvatore Baldino、Sarah Facchetti、Antonio Zanotti-Gerosa、Hans Günter Nedden、Walter Baratta
DOI:10.1002/cctc.201600420
日期:2016.7.6
omethyl‐benzo[h]quinoline; R=Me, Ph] complexes by transfer hydrogenation and hydrogenation reactions. Aromatic, conjugated, and aliphatic aldehydes are converted quantitatively to the corresponding alcohols using 2‐propanol with potassium carbonate at substrate/catalyst ratios up to 100 000 by transfer hydrogenation, whereas aldehyde hydrogenation (5–20 atm of H2) is achieved efficiently in MeOH in
使用顺式-[RuCl 2(ampy)(PP)] [ampy = 2-(氨基甲基)吡啶可实现工业级醛(97-99%)向伯醇的化学选择性还原。PP = 1,4-双(二苯基膦基)丁烷,1,1'-二茂铁基-双(二苯基膦基)]和夹子[RuCl(CNN R)(PP)] [PP = 1,3-双(二苯基膦基)丙烷,1 ,4-双(二苯基膦基)丁烷,1,1'-二茂铁基-双(二苯基膦基); HCNN R = 4-取代-2-氨基甲基苯并[ h喹啉; R = Me,Ph]通过转移氢化和氢化反应络合。通过转移氢化反应,使用2-丙醇和碳酸钾将芳香,共轭和脂肪族醛定量转化为相应的醇,其中底物/催化剂的比例高达100000,而加氢有效地实现了醛加氢(H 2的5-20 atm )。 MeOH的KO的存在吨卜在底物/催化剂比率高达40 000。