3728-55-0Relevant articles and documents
Efficient hydro-deoxygenation of lignin derived phenolic compounds over bifunctional catalysts with optimized acid/metal interactions
Ju, Chao,Li, Mingrui,Fang, Yunming,Tan, Tianwei
supporting information, p. 4492 - 4499 (2018/10/24)
Efficient hydro-deoxygenation (HDO) of lignin derived phenolic compounds was a challenging task due to the incompatibility of the phenolic feedstock and the current hydro-processing catalysts. In this paper, hydro-deoxygenation of lignin derived phenolic compounds over a series of bifunctional catalysts with different metal/acid interactions was firstly carried out. It was found that the distance between the acidic site and noble metal played an important role in the catalytic performance of phenolic hydro-deoxygenation. A highly stable bifunctional catalyst for hydro-deoxygenation of lignin derived phenolic compounds was obtained through simple selective deposition of Pt on alumina in a commonly used Al2O3-ZSM-5 nanocomposite. The bifunctional catalyst retained its complete deoxygenation capacity for more than 500 h. The catalyst can also be used for the HDO of various phenolic model compounds and real bio-oil derived from lignin. A correction of the generally accepted the closer the better criterion in metal/acid bifunctional catalysts when used in bio-oxygenate HDO was also discussed.
Unexpected transformations of alkyldiallylamines in the KOH-DMSO system
Musorin
, p. 1576 - 1577 (2007/10/03)
Triallylamine in the KOH-DMSO system readily isomerizes into tri(1-propenyl)amine. Alkyldiallylamines in the same system give 1-ethyl-3-methylcyclohexane along with alkyldi(1-propenyl)amine. The effect of quantity of base and reaction temperature on product ratio was studied. A route of 1-ethyl-3-methyl-cyclohexane formation was proposed.
Organolanthanide catalyzed hydrogenation and hydrosilylation of substituted methylenecycloalkanes
Molander, Gary A.,Winterfeld, Joern
, p. 275 - 279 (2007/10/03)
This communication presents a study of the scope of the catalytic hydrogenation and hydrosilylation of chiral exomethylene-substituted cyclopentanes and cyclohexanes utilizing the organolanthanide precatalysts Cp2* LnCH(SiMe3)2 (Cp* = C5Me5; Ln = Sm, Yb). Both reaction types are sterically driven and lead to the cis-diastereomer as the major product. Additionally, the hydrosilylation is regiospecific, the silane being placed exclusively at the terminal position of the double bond.