- Novel method for preparing butanol by catalyzing ethanol condensation by virtue of manganese
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The invention discloses a novel method for preparing butanol by catalyzing ethanol condensation by virtue of manganese. A manganese catalyst adopted in the method is a manganese complex shown in a formula I, a formula II, a formula III or a formula IV. Based on the manganese complex, the invention provides a method for preparing butanol through ethanol coupling based on catalysis of cheap manganese metal, high catalytic activity (TON=114120, wherein TOF of early 12h is 3078/h) and 92% butanol selectivity (figure 1) are shown. The method disclosed by the invention has the advantages that biomass resources are efficiently utilized, and especially an important technical support and theoretical guidance are provided for production of high-quality biofuel, catalytic activation and transformation of a biomass platform compound and design of a corresponding cheap and efficient catalyst.
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Paragraph 0061-0064
(2017/12/30)
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- Aminophosphine ligands R2P(CH2)nNH 2 and ruthenium hydrogenation catalysts RuCl2(R 2P(CH2)nNH2)2
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The aminophosphine ligands R2P(CH2) 2NH2 and R2P(CH2)3NH 2 (R = Ph, iPr, tBu) were isolated in good to excellent yields from the reaction of LiPR2 with Cl(CH 2)2N(TMS)2 and Cl(CH2) 3N(TMS)2, respectively, followed by hydrolysis. This approach allows fine tuning of the ligands' stereoelectronic properties through the variation of the substituents on the phosphine. The aminophosphine ligands were used to prepare the ruthenium complexes RuCl2(R 2P(CH2)2NH2)2 and RuCl2(R2P(CH2)3NH2) 2 by reacting a 2:1 mixture of the respective ligand and [RuCl 2(cod)]n in an appropriate solvent. The resulting complexes were found to be excellent catalysts for the hydrogenation of ketones and imines. The Royal Society of Chemistry 2009.
- Jia, Wenli,Chen, Xuanhua,Guo, Rongwei,Sui-Seng, Christine,Amoroso, Dino,Lough, Alan J.,Abdur-Rashid, Kamaluddin
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experimental part
p. 8301 - 8307
(2010/03/04)
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- METHOD FOR THE PREPARATION OF AMINOPHOSPHINE LIGANDS AND THEIR USE IN METAL CATALYSTS
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The present application is directed to i) a two-step method for synthesizing phosphme-ammophosphme (P,N,P) ligands, ii) the use of such ligands in the preparation of metal complexes as hydrogenation catalysts, and iii) ammophosphme (P,N) and phosphme-ammo
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Page/Page column 34
(2009/01/24)
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