2243-27-8Relevant articles and documents
Brown,Jenkins
, p. 458 (1976)
EFFET DE L'EAU ET D'AUTRES ADDITIFS SUR L'ALKYLATION DE KCN EN TRANSFERT DE PHASE SOLIDE-LIQUIDE SANS SOLVANT.
Bram, G.,Loupy, A.,Pedoussaut, M.
, p. 4171 - 4174 (1986)
The alkylation of KCN by solid-liquid phase transfer catalysis without added solvent is optimal when a definite amount of water is added.The efficiencies of ten other additives are compared with those of water.
Barrett,Grattan
, p. 4237 (1979)
Mechanisms of Polymer-Supported Catalysis. 1. Reaction of 1-Bromooctane with Aqueous Sodium Cyanide Catalyzed by Polystyrene-Bound Benzyltri-n-butylphosphonium Ion
Tomoi, M.,Ford, Warren T.
, p. 3821 - 3828 (1981)
The rate of reaction of 1-bromooctane with aqueous sodium cyanide catalyzed by insoluble polystyrene-bound benzyltri-n-butylphosphonium salts has been studied as a function of the method of mixing of the triphase system, catalyst particle size, degree of polymer cross-linking, solvent, and temperature.Reaction rates increase as the speed of mechanical stirring increases to a maximum rate at 600 rpm.Turbulent vibromixing and ultrasonic mixing do not cause any additional reaction rate increase.Reaction rates increase as catalyst particle sizes decrease, even at the maximum stirring speed.Reaction rates decrease as percent of divinylbenzene cross-linking in the polymer increases from 2percent to 10percent.Reaction rates increase with increasing swelling power of the solvent in the order decane /= 28 times faster than polymer-bound benzyltrimethylammonium when mass transfer and intraparticle diffusion do not limit the rates.
TRIPHASE CATALYSIS OF POLYMER-BOUND AMINE OXIDE IN CYANIDE DISPLACEMENT ON 1-BROMOOCTANE
Maeda, Hirokazu,Hayashi, Yoshiyuki,Teramura, Kazuhiro
, p. 677 - 678 (1980)
Cross-linked polystyrene supported tertiary amines and amine oxides are found to be a very efficient catalyst for a nucleophilic substitution reaction.The amine oxide resin (MPE-5-AO) was one of the most effective and economical catalysts and can be used several times without the loss of the catalytic activity.
Regen
, p. 5956 (1975)
A Molecular Iron-Based System for Divergent Bond Activation: Controlling the Reactivity of Aldehydes
Chatterjee, Basujit,Jena, Soumyashree,Chugh, Vishal,Weyhermüller, Thomas,Werlé, Christophe
, p. 7176 - 7185 (2021/06/30)
The direct synthesis of amides and nitriles from readily available aldehyde precursors provides access to functional groups of major synthetic utility. To date, most reliable catalytic methods have typically been optimized to supply one product exclusively. Herein, we describe an approach centered on an operationally simple iron-based system that, depending on the reaction conditions, selectively addresses either the C=O or C-H bond of aldehydes. This way, two divergent reaction pathways can be opened to furnish both products in high yields and selectivities under mild reaction conditions. The catalyst system takes advantage of iron's dual reactivity capable of acting as (1) a Lewis acid and (2) a nitrene transfer platform to govern the aldehyde building block. The present transformation offers a rare control over the selectivity on the basis of the iron system's ionic nature. This approach expands the repertoire of protocols for amide and nitrile synthesis and shows that fine adjustments of the catalyst system's molecular environment can supply control over bond activation processes, thus providing easy access to various products from primary building blocks.
Synthetic Fuels from Biomass: Photocatalytic Hydrodecarboxylation of Octanoic Acid by Ni Nanoparticles Deposited on TiO2
Albero, Josep,Du, Xiangze,García, Hermenegildo,Hu, Changwei,Li, Dan,Peng, Yong
, (2021/12/13)
Decarboxylation of low-value fatty acids from biomass is a simple process to produce synthetic fuels suitable to be blended with gasoline or diesel. The present study reports the photocatalytic decarboxylation of octanoic acid in the presence of H2 by a series of modified TiO2 to form mixtures of n-heptane and tetradecane as major products in variable proportions, depending on the photocatalyst and the reaction conditions. It was found that the photocatalytic activity increases upon an optimal reductive NaBH4 treatment, presumably by generation of surface oxygen vacancies and by the deposition of Ni nanoparticles in the appropriate loading. Under the optimized conditions, an almost complete octanoic acid conversion and a combined selectivity to n-heptane and tetradecane over 80 % were reached at 10 h of UV/Vis light irradiation with a 300 W Xe lamp. No changes in the photocatalytic performance were observed for six consecutive runs. The present results illustrate the possibility that photocatalytic decarboxylation offers for the transformation of biomass into synthetic fuels under mild conditions.
Ni-Catalyzed Isomerization-Hydrocyanation Tandem Reactions: Access to Linear Nitriles from Aliphatic Internal Olefins
Gao, Jihui,Ni, Jie,Yu, Rongrong,Cheng, Gui-Juan,Fang, Xianjie
supporting information, p. 486 - 490 (2021/02/05)
A highly regioselective nickel-based catalyst system for the isomerization/hydrocyanation of aliphatic internal olefins is described. This benign tandem reaction provides facile access to a wide variety of aliphatic nitriles in good yields with excellent regioselectivities. Thanks to Lewis acid-free conditions, the protocol features board functional groups tolerance, including secondary amine and unprotected alcohol groups.
