A Ruthenium-Grafted Hydrotalcite as a Multifunctional Catalyst for Direct α-Alkylation of Nitriles with Primary Alcohols

Motokura, Ken; Nishimura, Daisuke; Mori, Kohsuke; Mizugaki, Tomoo; Ebitani, Kohki; Kaneda, Kiyotomi

doi:10.1021/ja049181l

Cited by 250 publications

(88 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…18-4). 197 The observed reaction rates were significantly higher than those of previously reported homogeneous Ru catalysts combined with a stoichiometric amount of Na 2 CO 3 . In 2013, Dixit et al 198 studied the catalytic activity of an Mg-Al hydrotalcite supported copper in the conversion of various alcohols in the aldol condensation with ketones (see Fig.…”

Section: Hydrogen-transfer Processesmentioning

confidence: 56%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

View full text Add to dashboard Cite

Layered double hydroxides (LDHs) and derived materials have been widely used as heterogeneous catalysts for different types of reactions either in gas or in liquid phase. Among these processes, the valorization/upgrading of lignocellulosic biomass and derived molecules have attracted enormous attention because it constitutes a pivotal axis in the transition from an economic model based on fossil resources to one based on renewable biomass resources with preference for biomass waste streams. Proof of this is the increasing amount of literature reports regarding the rational design and implementation of LDHs and related materials in catalytic processes such as: depolymerization, hydrogenation, selective oxidations, and C-C coupling reactions, among others, where biomass-derived compounds are used. The major aim of this contribution is to situate the most recent advances on the implementation of these types of catalysts into a lignocellulosic-feedstock biorefinery scheme, highlighting the versatility of LDHs and derived materials as multifunctional, tunable, cheap and easy to produce heterogeneous catalysts.

show abstract

Section: Hydrogen-transfer Processesmentioning

confidence: 56%

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Several aromatic nitriles and aliphatic alcohols were combined to give the alkylated products, such as nitrile 95, in excellent yields (Scheme 26). [60] Williams et al have also reported [61] on some indirect condensation reactions with activated methylene compounds. The indirect nitro-aldol reaction (Henry reaction) has been studied using both iridium and ruthenium catalyst systems, to give alkylation of simple nitroalkanes leading to products including compound 96.…”

Section: à C Bond Formation From Alcoholsmentioning

confidence: 97%

Borrowing Hydrogen in the Activation of Alcohols

2007

View full text Add to dashboard Cite

Alcohols can be temporarily converted into carbonyl compounds by the metal-catalysed removal of hydrogen. The carbonyl compounds are reactive in a wider range of transformations than the precursor alcohols and can react in situ to give imines, alkenes, and a-functionalised carbonyl compounds. The metal catalyst, which had borrowed the hydrogen, then returns it to the transformed carbonyl compound, leading to an overall process in which alcohols can be converted into amines, compounds containing C À C bonds and b-functionalised alcohols.

show abstract

“…Among the nine kinds of transition metal cation modified LDHs, trivalent cation modified LDHs exhibited much higher catalytic performance than divalent cation modified ones (see Entries 3-14 in Table 1). On the LDH laminates with trivalent metal cations, more surface -OH were decomposed to OH − to balance the excessive positive charge [19,20]. This led to the enhanced surface basicity and could afford the higher catalytic performance of trivalent cation …”

Section: Catalytic Performance Of Metal Cation Modified Ldhsmentioning

confidence: 99%

Solvent-Free Selective Oxidation of Toluene with O2 Catalyzed by Metal Cation Modified LDHs and Mixed Oxides

Wang

Líu

et al. 2016

Catalysts

View full text Add to dashboard Cite

A series of metal cation modified layered-double hydroxides (LDHs) and mixed oxides were prepared and used to be the selective oxidation of toluene with O 2 . The results revealed that the modified LDHs exhibited much higher catalytic performance than their parent LDH and the modified mixed oxides. Moreover, the metal cations were also found to play important roles in the catalytic performance and stabilities of modified catalysts. Under the optimal reaction conditions, the highest toluene conversion reached 8.7% with 97.5% of the selectivity to benzyldehyde; moreover, the catalytic performance remained after nine catalytic runs. In addition, the reaction probably involved a free-radical mechanism.

show abstract

A Ruthenium-Grafted Hydrotalcite as a Multifunctional Catalyst for Direct α-Alkylation of Nitriles with Primary Alcohols

Cited by 250 publications

References 19 publications

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Recent advances on the utilization of layered double hydroxides (LDHs) and related heterogeneous catalysts in a lignocellulosic-feedstock biorefinery scheme

Borrowing Hydrogen in the Activation of Alcohols

Solvent-Free Selective Oxidation of Toluene with O2 Catalyzed by Metal Cation Modified LDHs and Mixed Oxides

Contact Info

Product

Resources

About